Page 1 Service Manual AMT12 Base Open Stride and Fixed Stride © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 1...
Page 2: Table Of Contents
Club Parameter = Settings (5651565) ..................17 Information Display (65) .......................18 4- Theory of Operation ......................19 Console Models ..........................19 Basic operation of a console ......................20 AMT Base Operation ........................22 Power Generation ........................ 22 © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 2...
Page 3: Table Of Contents
AMT Resistance Control: ..................... 23 Vertical Resistance: ......................23 Horizontal Resistance: ......................24 AMT motion detection (RPM): ................... 24 DC Lift System – Position Monitoring (If Equipped ............27 © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 3...
Page 4: Table Of Contents
Event 70 - 79 ..........................49 Troubleshooting Heart Rate Issues: .....................50 Wireless Heart Rate Does Not Work ....................51 6- Replacement Procedures ....................53 Cover Replacement........................54 Replacing a Belt Guard ........................65 © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 4...
Page 5: Table Of Contents
Replacing the H-Brake Drum Assembly..................233 Replacing the Gas Shock ......................242 Replacing the Incline Motor ......................245 7 – Adjustment Procedure ....................251 Measuring the Resistance of a Generator .................251 © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 5...
Page 6: Table Of Contents
8- Preventative Maintenance ....................267 9- Wiring & Block Diagrams....................269 P30 - AMT '11 835 Block Diagram .....................269 P20_P30_P80 AMT '11 Wiring Diagram ..................269 10 – Exploded View ......................271 © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 6...
Page 7: Introduction
About this Document Warning: This service manual is for use by Precor trained service providers only. If you are not a Precor Trained Servicer, you must not attempt to service any Precor Product; Call your dealer for service. This document contains information required to perform the majority of troubleshooting, and replacement procedures required to repair and maintain this product.
Page 8: General Information
(output frequency) of the monitored generator winding. A magnetic brake applies resistance to horizontal motion and a sensor that measures horizontal motion (stride length). General Information For the latest exploded view, part number and part pricing information, visit the Precor dealer website at www.precor.com/connection. Tools Required Multimeter...
Page 9: Operating Safety
AMT can be made immobile by lift the stairarm pedals and removing the tension from stairarm flat belts. Removing the tension from the flat belts will prevent accidental pinching. Operating Safety © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 9...
Page 10  AMT’s equipped with Cardio Theater PVS units will have external power supply and coaxial cable routed through the bottom of the unit to the top of the display console. Cord management must be maintained. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 10...
Page 11: Operation Verification
Press and hold the reset key for at least 6 seconds, to look at the error log again. This time look for any NEW errors displayed resulting from the verification test indicating that the unit needs attention. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 11...
Page 12: Verification Checklist
Incline operates within the complete range of lift when the “UP” or “DOWN” keys are pressed, and are free of excessive noise or vibrations. No new errors were logged in the error log. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 12...
Page 13: Standardized Service Access Codes
The codes are as follows; Access Code Heading Name Function 51765761 Hardware Running Validation Diagnostic Tests 5651565 Club Parameters Changing (Commercial) Machine and/or Workout Parameters Information Acquiring Display Information © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 13...
Page 14: P20 Service Software Access
P20 Service Software Access The P20 will start with stop, pause, or reset, numeric values have been assigned to the function keys in the absence of the 10-key pad. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 14...
Page 15: Entering The Service Software On A P80 Console
Any speed faster than 1 second may result in an unsuccessful access to the sign-in screen. Diagram 8 2. The sign-in screen will be displayed. Type in the technician access code (5,1,7,6,5,7,6,1) and press © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 15...
Page 16: Hardware Validation = Diagnostic Tests (51765761)
Crossramp Test Base Function Test Tests the lift motor functions of the adjustable step height feature. Press the back button to exit this test. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 16...
Page 17: Club Parameter = Settings (5651565)
Sets a metric that may be of specific importance to the specific facility or fitness trainer. The selected metric will scroll across the screen at regular intervals during the workout. Factory default is “NONE” © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 17...
Page 18: Information Display (65)
Displays the Statistics of the workout programs used, the number of times accessed, and duration of use. Error Log Displays a running log of errors encountered on the unit. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 18...
Page 19: Theory Of Operation
4- Theory of Operation Console Models Consoles that could appear on the AMT12 Base © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 19...
Page 20: Basic Operation Of A Console
There are also “Standard Error Codes” which all console models follow. For a full listing of “Standard Error Codes” used for this model see “troubleshooting”, section 7 of this manual. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 20...
Page 21 The lower processor also provides status back to the console processor (via the serial data stream) to report if everything occurred properly, or if an error code needs to be written to the error log. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 21...
Page 22: Amt Base Operation
“ON” only after a rate of greater than 20RPM at the crankarms is detected. A regulated 5VDC power supply and a regulated 3.3VDC power supply are used to power all the digital logic functions of the lower control module. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 22...
Page 23: Amt Resistance Control
The more voltage sent to the eddy current magnet © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 23...
Page 24: Horizontal Resistance
The reason that Precor uses a 3-phase generator on a self-powered AMT while self-powered EFXs use a 6-phase generator is centered in its use of Magnetic force as a resistance method.
Page 25 NOT varied. A single voltage is switched to the lift motor to initiate motion, and the polarity is switched to control direction. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 25...
Page 26 The processor on the lower control module then switches the 12VDC battery voltage to the lift motor windings as a NEGATIVE 12VDC. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 26...
Page 27: Dc Lift System – Position Monitoring (If Equipped
(if not, impossible) for a lift motor to go out of calibration without having some damage that needs to be repaired. See the section on troubleshooting the lift system if this occurs. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 27...
Page 28: Troubleshooting Procedures
Follow the appropriate procedure for “Troubleshooting Generated Power” or “Troubleshooting No Power to the Console”. If the system powers up and can be at least partially operated: Follow the procedure below – “Validating the Reported Failure”. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 28...
Page 29: Troubleshooting Generated Power
100 VAC -110 VAC. If any of the three readings in step 2 are significantly low, replace the generator. If you have performed all of the above tests and are unable to resolve the problem, contact Precor customer support.
Page 30: Measuring The Resistance Of A Generator
Reconnect the intermediate cable removed in step 5 to the replacement generator and the lower PCA. Reconnect the red battery lead to terminal M6 of the lower PCA. Diagram 8.1.1 Lower Control Module Connector Layout © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 30...
Page 31: Upper Display Does Not Illuminate
TP13 (+5D) and TP4 (DGND). Refer to Diagram 5.13.1. The voltage measured should be approximately 5 Vdc. If the voltage is significantly low, replace the lower PCA. Additionally, the DS1 LED should illuminate. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 31...
Page 32 This could potentially produce two bad units instead of one. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 32...
Page 33: Standardized Error Codes
Faulty data received from upper PCA Error 37 ESTOP Not Working Error 40 No lift motion detected Lift System Error 42 Lift position value out of range Errors Error 44 Un-commanded lift movement © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 33...
Page 34: Validating The Reported Failure
Error 83 P30 Speed Down Not Working The subsequent pages list the details of each of the error codes that exist within the Precor software hierarchy. Each page will include a description of the error code being displayed and the systems associated with the error code.
Page 35: Troubleshooting Control Error Codes
(lift system, etc…). Follow the steps for error code 5, 9, 12, 80 and 81 on the following pages. Error 05 - Key Depressed at Power Up © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 35...
Page 36 Wipe the surface of the display overlay clean of all liquid. Restart the power up sequence; if the ERROR 5 (Stuck Key) is no longer present, the liquid was the cause. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 36...
Page 37: Error 09 - Lower Pca Memory Test Errors
If the error message is consistently displayed when the unit is powered up, the lower control module should be replaced. It is possible to see this error message displayed intermittently due to external causes. Error 12 - Watchdog (Lower PCA) © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 37...
Page 38: Error 80, 81, 82, & 83 – P30 Machine Controls Not Working
Substitute a known good upper PCA for the existing PCA to determine if the upper PCA is the cause. Error 80, 81, 82, & 83 – P30 Machine Controls Not Working © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 38...
Page 39: Troubleshooting The Brake System
Open the P30 console to expose the circuit boards, and verify that the machine control cable has not become unplugged from the upper PCA. Substitute a known good machine control cable. Substitute a known good machine control assembly. Troubleshooting the Brake System Brake System Description: © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 39...
Page 40: Troubleshooting The Lift System
4. If no voltage is present, either the variable power supply on the lower control module is bad (no output from the lower control module) or there is an open in the electromagnet. Troubleshooting the Lift System Lift System Description: © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 40...
Page 41: Error 40 - No Lift Motion Detected
Operation of lift motor for testing: Most Precor AMTs require the unit to be pedaled for power to be present in order to operate the lift. For this reason the use of the external power option (if available) is recommended so that power can be provided without pedaling.
Page 42 (either up or down) as soon as the unit is powered up. The typical result is that the lift will be physically jammed as described above, and it will also probably cause the lift fuse to open (Newer LPCAs are equipped with a 7amp self-resetting circuit breaker). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 42...
Page 43: Error 42 - Lift Position Value Out Of Range
4. If the lift will not move in either direction, ohm out the cable that goes from the lower control module to the lift motor. If there are opens in the cable, repair or replace the cable. Error 42 - Lift Position Value Out of Range Description © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 43...
Page 44 Refer to the lift calibration procedure. If the lift position number and physical lift position measurement does not correspond with the service manual, calibrate the lift motor. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 44...
Page 45: Error 44 - Un-Commanded Lift Motion
If you have performed all of the procedures above and have been unable to correct the problem, search for solutions in the service bulletins or call Precor customer service. Error 44 - Un-commanded Lift Motion Description The lift control system has detected that the lift is in motion without a lift command having been issued.
Page 46: Error 45 - Lift Moving In Wrong Direction
Error 45 - Lift Moving in Wrong Direction Description The lift control system has detected that the lift is moving in the opposite direction of the issued lift command. Possible Causes Lift Motor hysteresis. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 46...
Page 47: Error 46 – Low Battery Voltage (Open Stride Amt12 Only)
3. Enter the diagnostic program per procedure, P80 Settings or Accessing the P30 Diagnostic Software. Using the diagnostic program allows you to test the incline system without continuously © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 47...
Page 48: Troubleshooting Communications
+5 VDC power supply is being overloaded by another component that is plugged onto the lower PCA. A defective lower control module. A defective upper PCA. Possible Remedies © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 48...
Page 49 70 through 77 are used to alert the unit that an upper or lower board has been replaced. The software determines which board has been replaced and makes the odometer reading of the replacement board © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 49...
Page 50: Troubleshooting Heart Rate Issues
1. a. If the HHHR functions correctly, then the processor on the HR board was in a “latched-up” condition, and cycling the power cleared the condition. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 50...
Page 51: Wireless Heart Rate Does Not Work
NOTE: This is not to say that something like a Wi-Fi network cannot be present at all, but if it is transmitting in close proximity the heart rate system MAY pick it up. These interference sources can © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 51...
Page 52 Possible sources of interference signals include, BUT NOT LIMITED TO: Wi-Fi Network Routers Cordless Telephones Cell Phones Electronic Dog Fences Garage Door Remotes Noisy AC feeds Florescent light ballasts © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 52...
Page 53: Replacement Procedures
Replacing the Stride Dial Sensor ......................Replacing the H-Brake Belt ........................Replacing the H-Brake Cam Assembly ..................... Replacing the H-Brake Drum Assembly ....................Replacing the Gas Shock .......................... Replacing the Incline Motor ........................© Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 53...
Page 54: Cover Replacement
Grasp the top cover at the gasket opening and pull upward to apply pressure to the locking tabs. While pressure is applied to the top cover gently tap the front cover just below the top cover with the heel of your hand. See figure below. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 54...
Page 55 The top cover should release from the back cover, remove the top cover and set aside. FIGURE 5: TOP COVER Front Cover Removal Remove the two #10 x ¾ inch screws located at the bottom corners of front cover. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 55...
Page 56 FIGURE 7: SIDE COVER MARKERS AND FRONT COVER Center Beam Cover Removal Remove the platform. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 56...
Page 57 Grasp the top of the rear cover and pull back, the back cover will release from the locking tab and then the cover can be lifted out of the slots in the bottom covers. FIGURE 9: BACK COVER REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 57...
Page 58 FIGURE 11: LEFT AND RIGHT SIDE COVER SCREW LOCATIONS The left and right side bottom covers can now be removed by lifting them up and out. FIGURE 12: BOTTOM COVERS REMOVED © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 58...
Page 59 Repeat the side cover assembly procedure for the right side cover. FIGURE 13: SIDE COVER ASSEMBLY Back Cover Assembly Hold the back cover up against the frame of the AMT in the approximate final position. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 59...
Page 60 Rotate the back cover forward until the locking tab of the back cover is aligned with cover mounting slot of the frame, push against the top of the back cover until the locking tab and slot are engaged. FIGURE 15: BACK COVER LOCKING TAB © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 60...
Page 61 Fasten the two #10 x ¾ inch screws at the bottom corners of the front cover. Tighten the screws completely. Upper Arm Cover Replacement FIGURE 16: UPPER ARM COVERS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 61...
Page 62 Secure the replacement cover to the arm using the five screws removed in step 1. Finger Tighten screws in all locations before fully tightening screws. FIGURE 17: UPPER ARM COVER SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 62...
Page 63 Rotate the top of the cover up and in to place. Fasten the outside and inside terminal cover to the flat belt terminal using the two #10-24 X 1.25 screws. FIGURE 18: FLAT BELT TERMINAL COVERS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 63...
Page 64 Important: In the following steps, do not apply excessive force to seat the cover. Position the rear edge of the top cover so that the clips on the top and back covers are engaged securely. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 64...
Page 65: Replacing A Belt Guard
Remove the screw that fasten the outside upper arm covers to the upper arm. Remove the inside and outside covers from the upper arm. Repeat the process for the remaining upper arm covers. FIGURE 21: UPPER ARM COVER SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 65...
Page 66 Grasp the belt guard mounting rings located on each side of the upper arm. Gently pull out and away from the grip connection ring's just enough to extend past the mounting bolt. FIGURE 22: BELT GUARD AND UPPER ARM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 66...
Page 67 The front belt guard should be positioned so that the interlocking tabs are pointing toward the front of the machine, and the guard toward the back. The rear belt guard should be positioned © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 67...
Page 68 FIGURE 25: BELT GUARD MOUNTING Replace the upper arm covers as per procedure, Upper Arm Cover Replacement (on page 61). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 68...
Page 69: Replacing The Upper Arm Grip
Remove the screw that fasten the outside upper arm covers to the upper arm. Remove the inside and outside covers from the upper arm. Repeat the process for the remaining upper arm covers. FIGURE 27: UPPER ARM COVER SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 69...
Page 70 Grasp the belt guard mounting rings located on each side of the upper arm. Gently pull out and away from the grip connection ring's just enough to extend past the mounting bolt. FIGURE 28: BELT GUARD AND UPPER ARM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 70...
Page 71 Taking care to not lose the rollers inside the belt guard, pull the two belt guard halves away from each other to separate. Repeat the process for the remaining belt guard. FIGURE 29: BELT GUARD REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 71...
Page 72 FIGURE 30: UPPER ARM GRIP SCREW LOCATIONS Grasp the grip connecting ring located on each side of the upper arm, pull up and over the flat belt pulley mounting bolt to remove the grip. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 72...
Page 73 Align the interlocking tabs of the smaller half with the slots of the larger half; rotate the halves together around the flat belt until the locking tabs are locked. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 73...
Page 74: Replacing A Flat Belt Terminal
Rotate the top of the inside terminal cover down until it is below the stairarm pedal, pull to remove. Repeat the process for the remaining rear flat belt terminal cover. FIGURE 33: FLAT BELT TERMINAL COVERS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 74...
Page 75 Remove the flat belt terminal stop bolt and washer. Remove the flat belt terminal adjustment bolt and washer. FIGURE 34: FLAT BELT CLAMP AND FLAT BELT TERMINAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 75...
Page 76 10 Fasten the stop bolt and washer to the flat belt clamp, but do not fully tighten at this time. 11 Thread the adjustment bolt through the washer, flat belt clamp and into the flat belt terminal. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 76...
Page 77 FIGURE 36: STAIRARM HEIGHT MEASUREMENT 15 If the measurement is too low or too high, tighten or loosen the adjustment bolt until the 3-7/8 inch measurement is achieved. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 77...
Page 78 Rotate the top of the cover up and in to place. Fasten the outside and inside terminal cover to the flat belt terminal using the two #10-24 X 1.25 screws. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 78...
Page 79 FIGURE 38: FLAT BELT TERMINAL COVERS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 79...
Page 80: Replacing A Upper Arm Flat Belt Pulley
Remove the screw that fasten the outside upper arm covers to the upper arm. Remove the inside and outside covers from the upper arm. Repeat the process for the remaining upper arm covers. FIGURE 40: UPPER ARM COVER SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 80...
Page 81 Grasp the belt guard mounting rings located on each side of the upper arm. Gently pull out and away from the grip connection ring's just enough to extend past the mounting bolt. FIGURE 41: BELT GUARD AND UPPER ARM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 81...
Page 82 Taking care to not lose the rollers inside the belt guard, pull the two belt guard halves away from each other to separate. Repeat the process for the remaining belt guard. FIGURE 42: BELT GUARD REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 82...
Page 83 13 Secure the flat pulley assembly to the upper arm using the mounting bolt, washers and lock nut. Thread the mounting bolt from the inside of the upper arm towards the outside of the upper arm, torque to 300 inch pounds or 25 foot pounds. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 83...
Page 84 Upper Arm Cover Installation 18 Secure the upper arm covers to the arm weldment using the five #10-24X1.25 screws. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 84...
Page 85: Replacing A Stairarm Pedal
19 Lift the stairarms and then thread the flat belts over the flat belt pulleys. 20 Replace the main body covers asp per procedure, Cover Replacement (on page 53). Replacing a Stairarm Pedal © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 85...
Page 86 Torque the screws to 15 inch pounds, starting from the single screw at the end of the stairarm, than screw mounted in the middle, finally the two rear pedal screws. FIGURE 48: STAIRARM AND STAIRARM PEDAL SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 86...
Page 87: Replacing A Stairarm
Rotate the top of the inside terminal cover down until it is below the stairarm pedal, pull to remove. Repeat the process for the remaining rear flat belt terminal cover. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 87...
Page 88 Remove the mounting bolt and washer that secure the flat belt terminal to the stairarm, remove the flat belt terminal and anti-rotation disc. FIGURE 51: FLAT BELT TERMINAL REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 88...
Page 89 Pivot the stairarm up into a vertical position. Note: The following procedure will be much more efficient if an assistant holds the stairarm up. Remove the four screws and washers that secure the stairarm pedal to the stairarm, remove the stairarm pedal. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 89...
Page 90 Remove the two #10-24 X .75 screws that secure the stairarm knuckle cover to the stairarm and set aside the knuckle cover. FIGURE 54: STAIRARM KNUCKLE COVER SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 90...
Page 91 12 Torque the screws to 25 inch pounds, starting from the single screw at the end of the stairarm, then the two camp screws, finally the two rear pedal screws. FIGURE 55: STAIRARM AND STAIRARM PEDAL SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 91...
Page 92 300 inch pounds or 25 foot pounds. FIGURE 56: FLAT BELT TERMINAL REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 92...
Page 93: Replacing The Flat Belts
19 Fasten the outside and inside terminal cover to the flat belt terminal using the two #10-24 X 1.25 screws. FIGURE 57: FLAT BELT TERMINAL COVERS Lift the stairarms and then thread the flat belts over the flat belt pulleys. Replacing the Flat Belts © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 93...
Page 94 Note: When the belts are replaced, it is required that all 4 flat belts be replaced at the same time. FIGURE 58: FLAT BELTS Precor recommends not swapping lower and upper PCA boards to troubleshoot, but if swapping is the only option to isolate a problem, swap only one PCA board at a time.
Page 95  All of these functions will place a code (70-79) in the error log, and they should be cleared before returning the unit to use. The following table shows the possible belt and PCA board swapping event codes. Belt Replacement & Odometer Tracking Codes © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 95...
Page 96 30,000. Tracking Belt Replacements When Event Event Description What Happens Code Stride count greater than 90 million Display "Belts Must Be Replaced strides Soon" At the banner © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 96...
Page 97: Inside Flat Belt Replacement
Remove and discard the two 1/4-20X1 flat belt clamp screws and shims that secure the flat belt to the clamp. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 97...
Page 98 It may be necessary to adjust the position of the vertical handlebar to gain access to the upper arm cam cover screws. FIGURE 61: UPPER ARM CAM COVERS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 98...
Page 99 10 Using a screw driver tip, push out the pin from the flat belt loop and cam clamp and then slide the flat belt out of the cam clamp. Remove the flat belt. FIGURE 63: UPPER INSIDE CAM PIN REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 99...
Page 100 13 Install a replacement 1/4-20X1 screw and shim in one of the cam clamp screw holes, do not fully tighten at this time. FIGURE 65: UPPER INSIDE CAM FLAT BELT ROUTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 100...
Page 101 15 Continue to work the flat belt loop and pin into the cam clamp until the side of the flat belt is resting next to the clamp screw. Ensure the pin is centered within the cam clamp. FIGURE 66: UPPER INSIDE CAM PIN INSTALL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 101...
Page 102 If the flat belts are not long enough to route through the pulley's, skip the belt routing until the belt flat belt installation is completed FIGURE 67: INSIDE FLAT BELT ROUTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 102...
Page 103 22 The flat belts ends will now need to be adjusted to their final position before the flat belt clamp screws can be tightened. Gently press downward on the stairarm pedal that corresponds to the replacement belt. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 103...
Page 104 24 Monitor the movement of the belt through the clamps until one or both ends of the flat belt has one belt segment extending beyond the flat belt clamp. FIGURE 69: FLAT BELT END ALIGNMENT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 104...
Page 105 28 If the flat belt was not re-routed through the pulleys in step 17, route them at this time. 29 Repeat the procedure for the remaining inside flat belt replacement. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 105...
Page 106: Outside Flat Belt Replacement
Remove the screw that fasten the outside upper arm covers to the upper arm. Remove the inside and outside covers from the upper arm. Repeat the process for the remaining upper arm covers. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 106...
Page 107 Grasp the belt guard mounting rings located on each side of the upper arm. Gently pull out and away from the grip connection rings just enough to extend past the mounting bolt. FIGURE 72: BELT GUARD AND UPPER ARM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 107...
Page 108 Taking care to not lose the rollers inside the belt guard, pull the two belt guard halves away from each other to separate. Repeat the process for the remaining belt guard. FIGURE 73: BELT GUARD REMOVAL Upper Arm Grip Removal © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 108...
Page 109 Grasp the grip connecting ring located on each side of the upper arm, pull up and over the flat belt pulley mounting bolt to remove the grip. FIGURE 75: UPPER ARM GRIP REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 109...
Page 110 Rotate the top of the inside terminal cover down until it is below the stairarm pedal, pull to remove. Repeat the process for the remaining rear flat belt terminal cover. FIGURE 76: FLAT BELT TERMINAL COVERS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 110...
Page 111 A 1/2 inch socket will fit the inside diameter of the flat belt clamp and can be used to push the flat belt out of the flat belt clamp. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 111...
Page 112 13 Remove the mounting bolt, the two washers and the nut that secure the upper arm pulley to the upper arm. FIGURE 79: UPPER ARM FLAT BELT PULLEY MOUNTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 112...
Page 113 Note: Any time the flat belt terminal screws are removed from the flat belt clamp or cams, the screws must be discarded and replaced with new screws. 16 Remove and discard the two 1/4-20X1 screws and shims that secure the flat belt to the cam clamp. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 113...
Page 114 17 Using a screwdriver, push out the pin from the flat belt loop and cam clamp and then slide the flat belt out of the cam clamp. FIGURE 82: UPPER OUTSIDE CAM PIN REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 114...
Page 115 The Figure below illustrates the correct flat belt routing. FIGURE 83: FLAT BELT ROUTING - TRANSPARENT VIEW OF ARM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 115...
Page 116 FIGURE 84: OUTSIDE FLAT BELT ROUTING - CAM 21 Install a replacement 1/4-20X1 screw and shim in one of the cam clamp screw holes, do not fully tighten at this time. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 116...
Page 117 28 To ease the installation of the flat belt to the flat belt terminal clamp, have an assistant hold the stairarm up or block up the stairarm so that the flat belt will have a sufficient amount of slack. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 117...
Page 118 34 Monitor the movement of the belt through the flat belt clamps until one or both ends of the flat belt has one belt segment extending beyond the flat belt clamp. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 118...
Page 119 38 Push one of the stairarm pedal's down to its lowest level. Measure the distance from the bottom of the stairarm tube to the top of the center beam frame, the distance between the stairarm tube and the center beam frame should be 3 7/8 inches. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 119...
Page 120 FIGURE 89: FLAT BELT TERMINAL ADJUSTMENT 40 Repeat the process for the remaining stairarm. 41 Fully tighten the stop bolt, torque to 300 inch pounds or 25 foot pounds. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 120...
Page 121 Upper Arm Cover Installation 46 Secure the upper arm covers to the arm weldment using the five #10-24X1.25 screws. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 121...
Page 122: Replacing The Front Arm Assemblies - With Flat Belts And Press Fit Cams (After 4/3/2013)
50 Replace the main body covers as per procedure, Cover Replacement (on page 53). 51 Check the operation of the AMT12. Replacing the Front Arm Assemblies - With Flat Belts and Press Fit Cams (After 4/3/2013) © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 122...
Page 123 With the heel of your hand, gently tap the back cover just below the top cover, see figure below. The top cover should release from the back cover, remove the top cover and set aside. FIGURE 94: TOP COVER © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 123...
Page 124 Place the heels of your hands just above the left and right side triangle markers. Gently tap the triangle markers with the palm of your hand, the locking tabs will release and the front can be removed. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 124...
Page 125 Note: Do not lift the cover up right after the front cover tab releases, lifting up the cover too quickly may not allow the middle center beam tabs to clear the frame slots, damaging the tabs. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 125...
Page 126 Repeat steps 1 and 2 to remove the right side cover. 10 Remove the eight #10 x ¾ inch screws that fasten the bottom covers to the frame. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 126...
Page 127 It may be necessary to adjust the position of the vertical handlebar to gain access to the upper arm cam cover screws. 15 Repeat the steps for the remaining upper arm cam cover. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 127...
Page 128 17 Rotate the top of the inside terminal cover down until it is below the stairarm pedal, pull to remove. 18 Repeat the steps for the remaining rear flat belt terminal covers. FIGURE 99: FLAT BELT TERMINAL COVERS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 128...
Page 129 Remove the four screws that fasten the inside upper arm covers to the upper arm. Remove the screw that fasten the outside upper arm covers to the upper arm. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 129...
Page 130 Remove the inside and outside covers from the upper arm. FIGURE 101: UPPER ARM COVER SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 130...
Page 131 Remove the two screws that secure the grip to the upper arm, there is one screw on each side of the upper arm. FIGURE 102: UPPER ARM GRIP SCREW LOCATIONS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 131...
Page 132 Grasp the grip connecting ring located on each side of the upper arm, pull up and over the flat belt pulley mounting bolt to remove the grip. FIGURE 103: UPPER ARM GRIP REMOVAL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 132...
Page 133 Grasp the belt guard mounting rings located on each side of the upper arm. Gently pull out and away from the grip connection ring's just enough to extend past the mounting bolt. FIGURE 104: BELT GUARD AND UPPER ARM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 133...
Page 134 Remove the mounting bolts, the two washers and the nut that secure the upper arm pulleys to the upper arms. FIGURE 106: UPPER ARM FLAT BELT PULLEY MOUNTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 134...
Page 135 FIGURE 107: UPPER ARM FLAT BELT PULLEY REMOVED Front Flat Belt Terminal Removal Remove the bolts and washers that secures the front flat belt clamps to the lift platform. FIGURE 108: FRONT BELT CLAMPS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 135...
Page 136 13 Remove the vertical handle bars. Tie Rod Removal 14 Remove the tie rod mounting bolts and washers that secure each upper tie rod end to the front arm assemblies. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 136...
Page 137 FIGURE 111: FRONT ARM MOUNTING BOLT 16 Remove the six bolts that secure the upper main shaft clamp to the lower main shaft clamp. Remove the top main shaft clamp. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 137...
Page 138 17 With assistance, lift the front arm and flat belts out of the lower main shaft clamp and upper arm. 18 Remove the other front arm and flat belts. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 138...
Page 139 Note: the flat belt must be routed over the strut in the front arm assembly. Failure to route the flat belt over the strut will cause severe damage to the flat belt. The Figure below illustrates the correct flat belt routing. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 139...
Page 140 FIGURE 115: FRONT ARM SHAFT AND MAIN CLAMP 21 Insert and finger tighten the shoulder bolts that secure the outside cam tubes to the upper arms. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 140...
Page 141 23 Use the following sequence to ensure the upper arm main shaft is properly secured to the front arm shaft; torque the bolts to 160 inch pounds. FIGURE 117: MAIN SHAFT CLAMP BOLTS- TORQUE SEQUENCE © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 141...
Page 142 Align the interlocking tabs of the smaller half with the slots of the larger half; rotate the halves together around the flat belt until the locking tabs are locked. FIGURE 118: BELT GUARD INTERLOCKING TABS AND SLOTS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 142...
Page 143 83 foot pounds or 1000 inch pounds. 38 Remove the screwdriver from the drain hole. 39 Repeat the steps for the remaining stairarm. FIGURE 119: STAIRARM AND FRONT ARM SCREW LOCATIONS Flat Belt Routing © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 143...
Page 144 FIGURE 121: FRONT BELT CLAMPS Tie Rod Installation 42 Fasten each upper tie rod end to the cam assembly using the bolts and washers, torque the bolt to 300 inch pounds. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 144...
Page 145 3 7/8 inches. FIGURE 123: STAIRARM HEIGHT MEASUREMENT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 145...
Page 146 Caution: Replace only one front arm at a time. The cams of the two front arms are in opposing positions from one another, replacing one front arm at time will prevent the cams from being incorrectly positioned. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 146...
Page 147 Remove the two #10-24X1.25 screws that secure the upper arm cam covers to the upper arm, then remove the covers. It may be necessary to adjust the position of the vertical handlebar to gain access to the upper arm cam cover screws. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 147...
Page 148 Once the screwdriver has locked the bearing preventing further rotation, fully remove the inside and outside mounting bolts. Remove the stairarm. FIGURE 125: STAIRARM AND FRONT ARM SCREW LOCATIONS Remove the vertical handle bar. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 148...
Page 149 Remove the flat belt. FIGURE 127: UPPER INSIDE CAM PIN REMOVAL Repeat the process to remove the outside flat belt from the front arm cam. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 149...
Page 150 FIGURE 128: TIE RODS Front Arm Removal 11 Remove the shoulder bolt that secures the outside cam tube to the upper arm. FIGURE 129: FRONT ARM MOUNTING BOLT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 150...
Page 151 12 Remove the six bolts that secure the upper main shaft clamp to the lower main shaft clamp. Remove the top main shaft clamp. FIGURE 130: MAIN SHAFT CLAMP BOLTS Caution: It is recommended to have assistance available for the following step(s). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 151...
Page 152 Remove and discard the four screws and shims that secure the two flat belt cams to the front arm tube, slide the cams off the front arm tube. Remove the two square keys that align the cam to the front arm tube. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 152...
Page 153 FIGURE 132: FLAT BELT CAM SCREWS & CAM SCREWS Repeat the process for the other side of the front arm. FIGURE 133: FRONT ARM AND CAM SQUARE KEYS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 153...
Page 154 FIGURE 134: FRONT ARM SHAFT AND MAIN CLAMP Insert and finger tighten the bolt for the outside cam tube to the upper arm. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 154...
Page 155 Secure the front arm shaft to the upper arm using the shoulder bolt, torque to 300 inch pounds or 25 foot pounds. FIGURE 136: FRONT ARM MOUNTING BOLT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 155...
Page 156 Tie Rod Installation Fasten upper tie rod end to the cam assembly with the bolt and washer, torque the bolt to 300 inch pounds. FIGURE 137: TIE RODS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 156...
Page 157 Install a replacement 1/4-20X1 screw and shim in one of the cam clamp screw holes, do not fully tighten at this time. FIGURE 139: UPPER INSIDE CAM FLAT BELT ROUTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 157...
Page 158 Continue to work the flat belt loop and pin into the cam clamp until the side of the flat belt is resting next to the clamp screw. Ensure the pin is centered within the cam clamp. FIGURE 140: UPPER INSIDE CAM PIN INSTALL © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 158...
Page 159 Thread the outside flat belt so that the belt is routed from under the cam toward the front of the AMT and then up, ensure the flat belt loop end is facing up. FIGURE 141: OUTSIDE FLAT BELT ROUTING - CAM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 159...
Page 160 11 Place the inside flat belt on the cam so the length of the flat belt is draped towards the back of the AMT. Make sure the smooth side of the flat belt contacts the cam and the segmented side is facing up. FIGURE 142: OUTSIDE FLAT BELT ROUTING - CAM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 160...
Page 161 FIGURE 143: UPPER OUTSIDE CAM PIN 15 Install the second 1/4-20X1 replacement screw and shim that secures the flat belt to the cam. Do not tighten fully at this time. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 161...
Page 162 21 Replace the upper arm cam covers. 22 Attach the vertical handle bar to the front arm. 23 Replace the main body covers as per procedure, Cover Replacement (on page 53). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 162...
Page 163: Replacing The Lower Board
AMT frame. Disconnect the data cable, incline motor cable (Open Stride only), generator cable, load cable, stride dial cable, battery cables, and vertical sensor cable from the lower PCA. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 163...
Page 164: Replacing The Lower Pca And Battery Bracket
Disconnect the data cable, incline motor cab le (Open Stride only), generator cable, load cable, stride dial cable, battery cables, and vertical sensor cable from the lower PCA © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 164...
Page 165 Note: Ensure that the wires are not pinched between the generator bracket and the lower PCA battery bracket. FIGURE 148: LOWER PCA & BATTERY BRACKET MOUNTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 165...
Page 166: Replacing The Battery
Connect the black wire battery cable to the terminal on the battery marked with a (-) or black square. Replace the lower PCA cover. Replace the covers as per procedure, Cover Replacement (on page 53). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 166...
Page 167: Replacing The Generator Belt
Loosen the step up pulley adjustment bolt until tension has been removed from the input pulley belt and has sufficient slack so that the belt may be removed from the step up pulley. FIGURE 150: GENERATOR © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 167...
Page 168 13 Install the generator belt over the step up pulley and generator pulley. 14 Adjust the Input and Generator pulley tension. Go to "Inspecting and Adjusting the Generator Belt Tension" procedure. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 168...
Page 169: Replacing The Generator
20 Replace the covers as per procedure, Cover Replacement (on page 53). For attaining maximum accuracy from the gauge. Replacing the Generator Procedure Remove the covers as per procedure, Cover Replacement (on page 53). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 169...
Page 170 10 Replace the generator belt over the generator pulley. FIGURE 152: GENERATOR 11 Adjust the Input and Generator pulley tension. Go to "Inspecting and Adjusting the Generator Belt Tension" procedure. FIGURE 153: GENERATOR © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 170...
Page 171: Replacing The Drive Input Pulley Belt
Loosen the step up pulley adjustment bolt until tension has been removed from the input pulley belt and has sufficient slack so that the belt may be removed from the step up pulley. Remove the drive input belt from the step up pulley and discard. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 171...
Page 172: Replacing The Step Up Pulley
14 Lift the stairarms and thread the flat belts through the pulleys. 15 Replace the covers as per procedure, Cover Replacement (on page 53) for attaining maximum accuracy from the gauge. Replacing the Step Up Pulley Procedure © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 172...
Page 173 Place the wave washer on the axle and then the replacement step up pulley. Secure the step up pulley to the axle with the snap ring. 10 Place the generator and input pulley belts over the step up pulley. FIGURE 156: STEP UP PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 173...
Page 174 11 Adjust the Input and Generator pulley tension. Go to "Inspecting and Adjusting the Generator Belt Tension" procedure. FIGURE 157: STEP UP PULLEY 12 Tighten the two step up input pulley mounting bolts. Torque to 160 inch pounds © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 174...
Page 175: Replacing The Crank Arm
Remove the tension from the inner flat belt pulleys by lifting up on the stairarms, pulling the flat belts off the flat belt pulleys, and then gently setting the stairarm down. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 175...
Page 176 180 degrees opposing. FIGURE 159: CRANK ARM ALIGNMENT FIGURE 160: CRANK ARM BOLT REMOVAL/ INSTALLATION © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 176...
Page 177 180 degrees opposing. Replace the covers as per procedure, Cover Replacement (on page 53). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 177...
Page 178: Replacing The Drive Input Pulley
Loosen the two bolts that secure the step up pulley mounting bracket bolts to the frame. Loosen the adjustment bolt for the step up pulley until tension has been removed from the input pulley belt and it can be removed from the pulleys. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 178...
Page 179 Remove the snap ring from the flat belt pulley shaft located on the drive input pulley. Remove the pulley and wave washer. FIGURE 164: CRANK ARM FLAT BELT PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 179...
Page 180 It may be necessary to use a Pitman arm puller or a 4 to 6 inch gear puller to remove the crank arm. Do not use a hammer or mallet to remove the crank arm. FIGURE 165: CRANK ARM BOLT REMOVAL/ INSTALLATION © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 180...
Page 181 Note: If necessary a rubber mallet can be used to dislodge the input pulley assembly from the housing by tapping on the input shaft from the crank arm side. FIGURE 166: DRIVE INPUT ASSEMBLY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 181...
Page 182 12 Place the crank arm on the shaft and secure the crank arm with mounting bolt and washer. To tighten the crank arm mounting bolt, insert a socket extension about twelve inches long or equivalent in the © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 182...
Page 183 180 degrees opposing. FIGURE 168: CRANK ARM ALIGNMENT FIGURE 169: CRANK ARM BOLT REMOVAL/ INSTALLATION © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 183...
Page 184 16 Select the QUICKSTART program and adjust the resistance up ▲ key until resistance level 10 is displayed. Pedal the AMT for approximately one minute and then recheck the belt tension. FIGURE 170: GENERATOR © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 184...
Page 185: Replacing The Lift Arm Housing
Release tension from the top of the gas shock by pushing a # 1 flat tip screw driver in the slot under the tension clip. Do not completely remove the retaining clip as it is difficult to reinstall. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 185...
Page 186 Incline motor tube and Incline platform using a punch and rubber mallet. FIGURE 172: INCLINE MOTOR HITCH PIN AND MOUNTING PIN © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 186...
Page 187 Removing the flat belt pulley will allow access to the Incline motor mounting bolt. 10 Remove the Incline motor mounting bolt and remove the Incline motor. FIGURE 173: INCLINE MOTOR MOUNTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 187...
Page 188 It may be necessary to use a Pitman arm puller or a 4 to 6 inch gear puller to remove the crank arm. Do not use a hammer or mallet to remove the crank arm. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 188...
Page 189 13 Remove the snap ring from the flat pulley shaft located on to the drive input pulley, remove the pulley and wave washer. FIGURE 176: DRIVE INPUT FLAT BELT PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 189...
Page 190 Note: If necessary a rubber mallet can be used to dislodge the input pulley assembly from the housing by tapping on the input shaft. FIGURE 177: DRIVE INPUT ASSEMBLY FIGURE 178: DRIVE INPUT ASSEMBLY ALIGNMENT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 190...
Page 191 16 Remove the five mounting bolts that secure the left and right side arm housings to the input housing. FIGURE 180: LIFT ARM MOUNTING BOLTS 17 Separate the left and right side arm housings from the input housing. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 191...
Page 192 FIGURE 182: DRIVE INPUT ASSEMBLY ALIGNMENT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 192...
Page 193 Note The position of the flat belt pulley on the crank arm and the flat belt pulley on the input pulley. When the crank arm is replaced, the flat belt pulleys must be positioned so that they are 180 degrees opposing. FIGURE 183: CRANK ARM ALIGNMENT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 193...
Page 194 23 Install the crank arm pinch bolt, washer and lock nut. Torque the pinch bolt and lock nut to 300 inch pounds or 25 foot pounds. FIGURE 184: CRANK ARM BOLT REMOVAL/ INSTALLATION FIGURE 185: CRANK ARM FLAT BELT PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 194...
Page 195 24 Place a belt gauge on the drive input belt as shown below. FIGURE 186: DIVE INPUT BELT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 195...
Page 196 Drive Belt Gauge Instructions page 265) 26 Loosen or tighten the step up pulley adjustment bolt until the belt gauge reads approximately 160 lbs. Drive Belt Gauge Instructions (on page 265) © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 196...
Page 197 27 Tighten the two step up input pulley mounting bolts. Torque to 160 inch pounds 28 Place a belt gauge on the generator belt as shown in below. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 197...
Page 198 31 Tighten the two bolts that secure the generator mounting bracket to the frame. Torque to 160 inch pounds 32 Lift the stairarms and then thread the flat belts over the flat belt pulleys. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 198...
Page 199 90 ± 10 lbs. See Drive Belt Gauge Instructions (on page 265) Incline Motor Installation 35 Attach the replacement Incline motor to the frame using the 3/8-16 mounting bolt. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 199...
Page 200 The lift level number must be 2 and the physical measurement must be 1-1/4 inches for the calibration to be correct. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 200...
Page 201 42 Press the gas shock onto the mounting stud and secure the gas shock to the upper mounting stud by pushing in on the tension clip. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 201...
Page 202: Replacing The Drive Input Housing
Remove the tension from the inner flat belt pulleys by lifting up on the stairarms, pulling the flat belts off the flat belt pulleys, and then gently setting the stairarm down. FIGURE 193: GENERATOR © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 202...
Page 203 Loosen the adjustment bolt for the step up pulley until tension has been removed from the input pulley belt and it can be removed from the pulleys. FIGURE 194: STEP UP PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 203...
Page 204 Rotate the gas shock down and out of the way of the incline motor. FIGURE 195: GAS SHOCK © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 204...
Page 205 Incline motor tube and Incline platform using a punch and rubber mallet. FIGURE 196: INCLINE MOTOR HITCH PIN AND MOUNTING PIN © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 205...
Page 206 Removing the flat belt pulley will allow access to the Incline motor mounting bolt. 12 Remove the Incline motor mounting bolt and remove the Incline motor. FIGURE 197: INCLINE MOTOR MOUNTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 206...
Page 207 It may be necessary to use a Pitman arm puller or a 4 to 6 inch gear puller to remove the crank arm. Do not use a hammer or mallet to remove the crank arm. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 207...
Page 208 15 Remove the snap ring from the flat pulley shaft located on to the drive input pulley, remove the pulley and wave washer. FIGURE 200: DRIVE INPUT FLAT BELT PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 208...
Page 209 FIGURE 201: DRIVE INPUT ASSEMBLY FIGURE 202: DRIVE INPUT ASSEMBLY ALIGNMENT 17 Remove the four 3/8-16 X 3 mounting bolts and washers that secure the flat belt clamps to the Lift Arm. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 209...
Page 210 FIGURE 204: LIFT ARM MOUNTING BOLTS 19 Separate the left and right side arm housings from the input housing. FIGURE 205: LIFT ARM HOUSING AND DRIVE INPUT HOUSING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 210...
Page 211 21 Fasten the replacement drive input housing to the frame using the four mounting bolts removed in step 9, torque to 160 inch pounds. Note: Ensure the drive input alignment tab is position to the left side. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 211...
Page 212 24 Fasten the drive input assembly to the drive input housing using the screw and square washer. Make sure that the square washer does not contact the drive input pulley after installation, test by spinning the drive input pulley through its full range. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 212...
Page 213 Note The position of the flat belt pulley on the crank arm and the flat belt pulley on the input pulley. When the crank arm is replaced, the flat belt pulleys must be positioned so that they are 180 degrees opposing. FIGURE 210: CRANK ARM ALIGNMENT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 213...
Page 214 28 Replace the wave washer and flat belt pulley onto the crank arm shaft and secure with the snap ring. Make sure the snap ring is fully seated into the shaft groove. FIGURE 212: CRANK ARM FLAT BELT PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 214...
Page 215 29 Place a belt gauge on the drive input belt as shown below. FIGURE 213: DIVE INPUT BELT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 215...
Page 216 31 Loosen or tighten the step up pulley adjustment bolt until the belt gauge reads approximately 160 lbs. Drive Belt Gauge Instructions (on page 265) FIGURE 214: STEP UP PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 216...
Page 217 32 Tighten the two step up input pulley mounting bolts. Torque to 160 inch pounds 33 Install the generator belt over the step up pulley and generator pulley. 34 Place a belt gauge on the generator belt as shown in below. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 217...
Page 218 37 Tighten the two bolts that secure the generator mounting bracket to the frame. Torque to 160 inch pounds 38 Lift the stairarms and then thread the flat belts over the flat belt pulleys. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 218...
Page 219 90 ± 10 lbs. See Drive Belt Gauge Instructions (on page 265) 41 Attach the Incline motor to the frame using the 3/8-16 mounting bolt. FIGURE 217: INCLINE MOTOR MOUNTING © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 219...
Page 220 The lift level number must be 2 and the physical measurement must be 1-1/4 inches for the calibration to be correct. FIGURE 218: INCLINE MOTOR CALIBRATION MEASUREMENT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 220...
Page 221 48 Press the gas shock onto the mounting stud and secure the gas shock to the upper mounting stud by pushing in on the tension clip. FIGURE 219: GAS SHOCK © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 221...
Page 222: Replacing A Tie Rod
Fasten the replacement lower tie rod end to the cam assembly using the bolts and washer removed in step 2, torque the bolt to 300 inch pounds. Replace the covers as described per procedure, Cover Replacement (on page 53). FIGURE 220: TIE RODS © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 222...
Page 223 Disconnect the stride dial cable connector from the stride dial PCA. Remove the two screws that secure the stride bracket to the frame and then remove the stride dial assembly. FIGURE 221: STRIDE DIAL ASSEMBLY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 223...
Page 224 Reconnect the stride dial cable connector to the stride dial sensor, ensure the cable is routed and secured away from the H-Brake cam stops. FIGURE 222: STRIDE DIAL ASSEMBLY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 224...
Page 225: Replacing The H-Brake Belt
Replace the covers as described per procedure, Cover Replacement (on page 53). Replacing the H-Brake Belt FIGURE 223: H-BRAKE BELT AND H-BRAKE CAM Procedure © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 225...
Page 226 Slide the clamp onto the cam and fasten the clamps together using the H-Brake tension bolt, washers and nut. H-Brake Belt Tensioning Place a belt gauge on the H-brake belt. FIGURE 225: H-BRAKE BELT TENSION GAUGE © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 226...
Page 227 H-Brake adjustment bolt. 11 Replace the covers per procedure, Cover Replacement (on page 53). Replacing the H-Brake Cam Assembly FIGURE 226: H-BRAKE BELT AND H-BRAKE CAM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 227...
Page 228 Remove the covers as described per procedure, Cover Replacement (on page 53). H-Brake Belt Removal Remove the H-Brake tension bolt, the two washers and nut. FIGURE 227: H-BRAKE BELT ASSEMBLY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 228...
Page 229 Disconnect the stride dial cable connector from the stride dial PCA. Remove the two screws that secure the stride bracket to the frame and then remove the stride dial assembly. FIGURE 228: STRIDE DIAL ASSEMBLY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 229...
Page 230 Remove the tie rod mounting bolts and washers that secure each lower tie rod end to the cam assembly. FIGURE 229: TIE RODS H-Brake Cam Removal and Installation Remove the bolt and washer that secures the cam assembly to the frame. FIGURE 230: CAM ASSEMBLY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 230...
Page 231 13 Fully tight in the two screws that secure the stride dial sensor to the frame. 14 Reconnect the stride dial cable connector to the stride dial sensor, ensure the cable is routed and secured away from the H-Brake cam stops. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 231...
Page 232 18 Slide the clamp onto the cam and fasten the clamps together using the H-Brake tension bolt, washers and nut. H-Brake Belt Tensioning 19 Place a belt gauge on the H-brake belt. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 232...
Page 233: Replacing The H-Brake Drum Assembly
21 Replace the covers as described per procedure, Cover Replacement (on page 53). Replacing the H-Brake Drum Assembly Procedure Remove the covers as described per procedure, Cover Replacement (on page 53). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 233...
Page 234 Rotate the gas shock down and out of the way of the incline motor. FIGURE 235: GAS SHOCK © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 234...
Page 235 Incline motor tube and Incline platform using a punch and rubber mallet. FIGURE 236: INCLINE MOTOR HITCH PIN AND MOUNTING PIN © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 235...
Page 236 11 Remove the snap ring from the flat belt pulley shaft located next to the Incline motor. Remove the pulley and wave washer. Removing the flat belt pulley will allow access to the Incline motor mounting bolt. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 236...
Page 237 16 Fasten the screw that secures the H-Brake drum assembly to the 90 degree bracket mounted on the frame. 17 Torque the H-Brake mounting bolt to 600 inch pounds (50 ft-lbs). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 237...
Page 238 22 Fasten the screw that secures the H-Brake drum assembly to the frame. 23 Torque the H-Brake mounting bolt to 600 inch pounds (50 ft-lbs). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 238...
Page 239 Connect the incline motor cable connector to the lower PCA and replace the lower PCA cover as per procedure, Replacing the Lower PCA and Battery Bracket (on page 164). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 239...
Page 240 Press the gas shock onto the mounting stud and secure the gas shock to the upper mounting stud by pushing in on the tension clip. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 240...
Page 241 15 Slide the clamp onto the cam and fasten the clamps together using the H-Brake tension bolt, washers and nut. H-Brake Belt Tensioning 16 Place a belt gauge on the H-brake belt. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 241...
Page 242: Replacing The Gas Shock
18 Replace the covers as described per procedure, Cover Replacement (on page 53). Replacing the Gas Shock Replacing the Gas Shock Remove the covers per procedure, Cover Replacement (on page 53). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 242...
Page 243 Note: Ensure the Incline tube and Incline screw do not turn after the Incline tube is free from the Incline platform. Turning the Incline tube or screw will cause the Incline motor to become out of calibration. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 243...
Page 244 12 Replace the Incline motor mounting pin through the Incline tube and Incline platform and attach the hitch pin. 13 Lift the stairarms and thread the inside flat belts through the flat belt pulleys. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 244...
Page 245: Replacing The Incline Motor
FIGURE 246: INCLINE MOTOR HITCH PIN AND MOUNTING PIN © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 245...
Page 246 Remove the incline motor housing mount bolt and remove the Incline motor. Early model AMTs used a bolt with bushing installation hardware, later models used a larger diameter bolt illuminating the need © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 246...
Page 247 CAUTION: DO NOT scratch, write on the gas spring shaft, or use tape that leaves a sticky residue to mark the reference distance, these items can damage the housing inner shaft seal. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 247...
Page 248 24 Verify the A/D value is between 212 and 216. 25 Verify that the gas spring outer housing to lift platform clearance is between ¼ to ¾ inches. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 248...
Page 249 26 Set the Cross Ramp to level 1. Verify the A/D value is between 38 and 42. 27 Operate the incline through its entire range to ensure proper operation. 28 Reinstall the front, side, and rear covers. 29 Verify the AMT operatio © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 249...
Page 251 WARNING: Before continuing with this procedure, review the Warning and Caution statements listed in the Warning and Caution Statements and General Safety Guidelines Section, Things You Should Know. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 251...
Page 252: Inspecting And Adjusting The H-Brake Belt Tension
Remove the gasket, top, front, rear, left and right side covers per, Cover Replacement (on page 53) Procedure . Place a belt gauge on the H-brake belt. FIGURE 250: H-BRAKE BELT TENSION GAUGE © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 252...
Page 253 The belt gauge should read approximately 110-120 lbs. If the belt tension is significantly high or low the belt tension may be adjusted by loosening or tightening the H-Brake adjustment bolt. FIGURE 251: H-BRAKE BELT AND H-BRAKE CAM © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 253...
Page 255: Inspecting And Adjusting The Generator Belt Tension
Remove the gasket, top, front, rear, left and right side covers per procedure, Cover Replacement page 53). Place a belt gauge on the generator belt as shown in below. FIGURE 252: GENERATOR BELT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 255...
Page 256 Pedal the AMT for approximately one minute and then recheck the belt tension. Recheck the drive input belt and the generator belt tension, readjust if out- of-spec. See Drive Belt Gauge Instructions. FIGURE 253: GENERATOR © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 256...
Page 257: Inspecting And Adjusting The Drive Input Belt Tension
Remove the gasket, top, front, rear, left and right side covers per, Cover Replacement (on page 53) Procedure . Place a belt gauge to the drive input belt as shown below. FIGURE 254: DIVE INPUT BELT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 257...
Page 258 100 - 125 lbs (45.4 56.7 kgs) Note: * More than 1 hour of use. Loosen the generator mounting bolts. Loosen the generator adjustment bolt. FIGURE 255: GENERATOR © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 258...
Page 259 Loosen the two step up pulley mounting bolts. Loosen or tighten the step up pulley adjustment bolt until the belt gauge reads approximately 160 lbs. FIGURE 256: STEP UP PULLEY © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 259...
Page 260 Pedal the AMT for approximately one minute, then recheck the belt tension. 10 Recheck the drive belt tension, readjust if needed. 11 Place a belt gauge on the generator belt as shown in below. FIGURE 257: GENERATOR BELT © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 260...
Page 261 Note: * More than 1 hour of use. 13 Loosen or tighten the 1/4-20 X 3 generator adjustment nut and bolt until the belt gauge reads approximately 90 lbs. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 261...
Page 262 Pedal the AMT for approximately one minute and then recheck the belt tension. 16 Recheck the generator belt tension, readjust if out-of-spec. FIGURE 258: GENERATOR 17 Replace the main covers as per procedure, Cover Replacement (on page 53). © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 262...
Page 263: Calibrating The Incline Motor
TIP: if the lift platform as bottomed out causing the pin to be stuck in place, you can use a ratcheting strap to slightly raise the lift platform freeing the pin for removal. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 263...
Page 264 15 Verify the A/D value is between 212 and 216. 16 Verify that the gas spring outer housing to lift platform clearance is between ¼ to ¾ inches. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 264...
Page 265: Drive Belt Gauge Instructions
Fully depress the ball so the hook engages the belt. Hold the gauge square to the edge of the belt, and release the ball using a quick, snapping motion. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 265...
Page 266 If the tension is not set to the manufactures specifications, remove the tension gauge and adjust the belt tension. Repeat steps 1 through 4 until specifications are met. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 266...
Page 267: Preventative Maintenance
8- Preventative Maintenance Cleanliness of your equipment and its operating environment will keep maintenance problems and service calls to a minimum. Precor recommends that you perform the following preventative maintenance schedule. IMPORTANT! Turn off and unplug equipment (if applicable) before performing preventative maintenance procedures.
Page 268 Check the belt tension of the step-up and drive belts, and adjust if necessary. Lubricate lift motor screw with synthetic grease (such as SuperLube® with Teflon. Check unit leveling and adjust if necessary. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 268...
Page 269: Wiring & Block Diagrams
9- Wiring & Block Diagrams P30 - AMT '11 835 Block Diagram P20_P30_P80 AMT '11 Wiring Diagram © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 269...
Page 271: Exploded View
10 – Exploded View The Exploded View is included as a quick reference. Refer to the Precor Connect website for the most recent information. © Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 271...

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