Page 2 CONSTIUENTS ARE KNOWN IN THE STATE OF CALIFORNIA TO CAUSE CANCER AND REPRODUCTIVE HARM. VISIT WWW.P65WARNINGS.CA.GOV NOTICE: Maintenance and Repairs should ONLY be performed by a trained specialists or qualified person. Please contact Rayco Mfg for a listing of approved maintenance facilities in your area.
Page 3 AT75 Operator · Service · Maintenance Manual Content TABLE OF CONTENTS Forward Safety Operation Maintenance Trubbleshoot Specifications Warranty 800.392.2686...
Page 4 75 feet from the ground. The AT75 is designed to be nimble Under extremely severe, dusty or wet operating conditions, with a shorter carrier length and tight turning radius.
Page 5: Machine Specs
AT75 Operator · Service · Maintenance Manual Foreword Machine Specs General – AT75 Climate Control: Heat & AC, Fresh Air/Cab Recirculation Functions Height: 10’-9” (3.3 m) Windshield Wiper w/1.2L Reservoir and 20” Single Blade Suspension Seat: Air Ride Suspension, Adj Lumbar, Document Ground Clearance: 19.5”...
Page 6 Use the below table to record identification numbers and dealer information. Serial Numbers Location Whenever communicating with Rayco or your Rayco dealer, have your machine serial number handy, as it can help pinpoint most exactly what information is needed in caring for your machine.
Page 7: Identification Numbers
AT75 Operator · Service · Maintenance Manual Serial Number Location & Information Identification Numbers Model Number Serial Number Machine Engine Implement Implement Dealer Information Name Address Dealer Contact Phone Number Hours Sales Parts Service 800.392.2686...
Page 8: California Proposition
AT75 Operator · Service · Maintenance Manual Safety California Proposition Keep the equipment free from foreign material. Remove debris, oil, tools, and other items from the deck, from walkways, 65 Warning and from steps. Diesel engine exhaust and some of its constituents are known...
Page 9: Important Safety Information
Rayco, you must use it only if you have accurately evaluated precautions. An accident can often be avoided by recognizing it and found that it threatens no one’s safety. You should potentially hazardous situations before an accident occurs.
Page 10: General Hazard Information
AT75 Operator · Service · Maintenance Manual Safety General Hazard Information Head protection must conform to ANSI Z89.1 and DO NOT wear under chin strapping while operating or within the operation area of the Horizontal Grinder. Eye protection must conform to ANSI Z87.1 and be the wrap around style.
Page 11: Fluid Penetration
AT75 Operator · Service · Maintenance Manual Safety Asbestos Information protection. Eye protection includes goggles or a protective face shield. The maximum air pressure for cleaning purposes must be reduced to 205 kPa (30 psi) when the nozzle is deadheaded and the nozzle is used with an effective chip deflector and personal protective equipment.
Page 12: Crushing Prevention And Cutting Prevention
AT75 Operator · Service · Maintenance Manual Safety Improperly disposing of waste can threaten the environment. Always shut-off the engine and wait for all moving parts, Potentially harmful fluids should be disposed of according belts, fans, rotors, drums, cutting wheels (etc) to come to a to local regulations.Always use leak proof containers when...
Page 13: Fire Prevention And Explosion Prevention
AT75 Operator · Service · Maintenance Manual Safety Coolant Electrolyte is an acid. Electrolyte can cause personal injury. Do not allow electrolyte to contact the skin or the eyes. Always wear protective glasses for servicing batteries. Wash hands after touching the batteries and connectors. Use of gloves is recommended.
Page 14: Fire Extinguisher
Repair any lines that are loose or damaged. Leaks can Never check the battery charge by placing a metal object cause fires. Consult your Rayco dealer for repair or for across the terminal posts. Use a voltmeter or a hydrometer.
Page 15 Replacement parts which are authorized by could affect the operator’s performance and concentration. Rayco are the only parts which should be used for repair or Maintain a drug-free work place. replacement on this machine.
Page 16: Safety Instructions
Observe all applicable local government regulations when Operation and Maintenance Manual, “Reference Material”. you use this machine. Consult your Rayco dealer in order to obtain copies of the Parking material. The information should be reviewed by every person Park on a level surface. If you must park on a grade, chock that operates the machine.
Page 17 Work Tool options - Attachments Speed of travel – At higher speeds, forces of inertia tend to Only use work tools that are approved by Rayco for use on make the machine less stable. Rayco machines. Refer to the Operation and Maintenance Roughness of terrain or surface –...
Page 18 AT75 Operator · Service · Maintenance Manual Safety Equipment Lowering with Engine • Keep the terrain in good condition. Stopped a. Remove any large rocks or obstacles. b. Fill any ditches and holes. Before lowering any equipment with the engine stopped, clear the area around the equipment of all personnel.
Page 19: Safety Decals
Rayco or polycarbonate front guards that are the applicable requirements for lockout/ tag out procedures, approved by Rayco are available for machines with a cab or and its intent to comply with OSHA regulations. an open canopy. On machines that are equipped with cabs, Lock Out Procedure the windshield should also be closed.
Page 20: Removal Procedure
AT75 Operator · Service · Maintenance Manual Safety that supplies energy to the equipment. In case of 4. Inform all affected personnel. mechanical energy, a block may be used to stop the 5. Check to see that all affected persons are located in a release of stored energy.
Page 21 AT75 Operator · Service · Maintenance Manual Safety Slow Down When Towing IF WHIPPING or SWAY OCCURS, DO NOT steer. DO NOT apply your brakes and NEVER speed up. Let off the gas AVOID CRASHES by slowing down. Reduce your speed pedal and hold the steering wheel in a straight-ahead position.
Page 22: Operation
AT75 Operator · Service · Maintenance Manual Operation Know Your Machine: General Identification - Exterior 1. Engine Compartment 10. Boom Transport Cradle 2. Fuel Tank FIll 11. Winch 3. Hydraulic Tank Location 12. Battery, Main Power Disconnect 4. Cab 13. Radiator / Debris Screen 5.
Page 23: Cab Interior
Accessing Fire Extinguisher There are two 20lb exterior fire extinguishers (11) located on the frame of the AT75. To access the extinguisher, pull the hair pin, then pull the main pin to lower the drop down door. Remove the fire extinguisher, safely put out any fire, or hazards immediately.
Page 24: Pre-Start Procedure
AT75 Operator · Service · Maintenance Manual Operation UNDERSTAND AND OBEY THE SAFETY USE EXTREME CAUTION WHEN OPERATING SECTION OF THIS MANUAL IN IT’S ENTIRETY, THE AT75 IN THE VICINITY OF OVERHEAD BEFORE OPERATING THIS MACHINE. ELECTRICAL CABLES. THE MACHINE MAY...
Page 25: Mounting And Dismounting
AT75 Operator · Service · Maintenance Manual Operation Operation Mounting and Dismounting • Get on or off the machine only at locations that are equipped with steps (1) and/or hand holds (2). • Before you get on the machine, clean and inspect the steps and the hand holds.
Page 26: Seat Belt Adjustment
Seat Belt PLACE WITH AN “AUDIBLE CLICK. ” DOING SO WILL PREVENT INJURY AND UNWANTED This machine was shipped from Rayco with a factory installed SEAT MOVEMENT WHILE THE MACHINE IS seat belt. Consult your Rayco dealer for all replacement parts.
Page 27: Emergency Exit
ROPS/FOPS can weaken the structure. See your Rayco dealer for mounting guidelines. • Saw is Off. • Any alteration that is not specifically authorized by Rayco The engine will not start unless the safety interlocks are invalidates the certification for the ROPS/FOPS. The engaged.
Page 28: Machine Controls
AT75 Operator · Service · Maintenance Manual Operation Pre-Operation Warm-Up 1a. Camera Display Emergency Stop Button Allow a cold engine to warm up at a low idle for at least five 3. HVAC - A/C on/off. Temp Control. Fan Speed minutes.
Page 29 20. Steering Wheel - The steering wheel comes equipped with steering spinner knob (a) for ease of turning wheel. Simply steer the AT75 in the direction desired. The steering wheel also comes with a tilt adjusment lever to tilt the steering wheel to the desired height.
Page 30: Display Panel
The hydraulic pressure display screen allows the operator to observe the various hydraulic pressures of the AT75. The hydraulic oil level lamp indicates that the hydraulic oil in the reservoir has dropped below the acceptable level.
Page 31 When a fault is highlighted in red, that fault extreme conditions, the filter head will shut down and the poses a mechanical risk to the AT75. When a red fault transmissions and the saw will not function. appears, the machine should be shutdown and repaired Service the AT75 as soon as possible when the indicator before being put back into service.
Page 32: Fault Explanation
AT75 Operator · Service · Maintenance Manual Operation Fault Explanation Diagnostic Message At any given time all faults will be listed on the Controller Diagnostic messages will appear on the display screen when Fault Screen. When faults are listed in green it is within issues arise.
Page 33 The manuals directory will have listed all three manuals that Rayco provides with the AT75. The OBAT75 is the operational booklet. The OSMAT75 is the operation, service and maintenance manual. The PMAT75 is the parts manual To navigate throught the directory, select the desired manual by touching the >...
Page 34: Operator Controls
AT75 Operator · Service · Maintenance Manual Operation On the base of the right hand joystick is a switch (3) that Operator Controls activates the heated seat. This switch has three positions high, low, and off with off being the center position. When...
Page 35: Joystick Controls
The left joystick controls the boom swing, the boom telescope blade, and machine tilt. in/out and the engine speed of the AT75. 1. This button will tilt the machine to the left. 1. This button will slow down the engine speed.
Page 36 Operation Operating the AT75 Traveling (High/Low Gear) Note: Before moving the AT75, make sure the front push blade is raised high enough above the ground to clear any minor bumps or mounds that could catch the blade. Release the parking brake, increase the engine throttle to BEWARE OF LIMITED VISIBILITY TO THE OPERATOR’S RIGHT SIDE DUE TO THE SIZE...
Page 37: Steering Modes
To switch to high gear, press and hold the foot brake pedal, and depress the high gearbox switch (5) on the console. The AT75 has 3 steering modes to allow the operator to maneuver on narrow right of ways. Select the rocker switch shown below to select the steering mode needed.
Page 38: Preparing To Cut
WHERE VISIBILITY IS LIMITED, ALWAYS POSITION GROUND PERSONNEL IN SIGHT OF OPERATOR TO WARN OPERATOR OF Position the AT75 so that the trees or limbs to be trimmed HAZARDS, POSSIBLE COLLISIONS, OR are on the right side of the machine as shown above. This...
Page 39: Using The Saw
(toward the push blade) until it fully rests on Rayco recommends trimming the tree limbs closest to the the frame below. Place pins back in place. The transport cradle operator, and work from the bottom of the tree upwards to the should look like the pic below while the boom is in operation.
Page 40 70º. The decal shown is located at the base of the boom, beside the operator right window. Always be mindful of the boom angle so not to tip back the AT75. The boom angle decal will always compensate for work on slopes as well. NOTICE...
Page 41 • Unwind the cable from winch and hook to tree or anchor. To tilt the AT75, press and hold the top right or top left button Be sure to leave at least one or more wraps on the on the right joystick to tilt the machine in the desired direction.
Page 42: Shutdown / Parking
CUTTING BOOM INTO THE TRANSPORT CRADLE, SHUT OFF THE ENGINE. DO NOT The AT75 is equipped from the factory with a tree saver PARK ON A SLOPE WHERE THE VEHICLE strap (A). The strap is located in the tool box located on COULD SLIDE.
Page 43 6. Connect jumper cables: a. Connect the red positive (+) jumper cable to the In the event the AT75 would shut down while in the process positive (+) terminal of battery of the stalled machine, of trimming. There is an electrical emergency back-up pump.
Page 44: Maintenance
AT75 Operator · Service · Maintenance Manual Maintenance Maintenance Log Date of Service Machine Hours Description of Service/ Maintenance Notes...
Page 45 AT75 Operator · Service · Maintenance Manual Maintenance Maintenance Log Date of Service Machine Hours Description of Service/ Maintenance Notes 800.392.2686...
Page 46 AT75 Operator · Service · Maintenance Manual Maintenance Accessing the Engine Enclosure Batteries - Check The engine is easily accessible through the engine enclosure doors. There are a total of five enclosure doors, depending on what area of the enclosure is needing service.
Page 47 AT75 Operator · Service · Maintenance Manual Maintenance cleaned by lightly tapping on a hard surface. Replace at stated intervals or when needed (Rayco filter element # 762823). In very dusty conditions, check this filter daily and clean or replace as needed.
Page 48 AT75 Operator · Service · Maintenance Manual Maintenance Hydraulic Oil Tank - Check & Fill 1. Clean all surrounding debris and dirt off of tank fill opening area. Note: Hydraulic Oil MUST be kept clean!! 2. Remove the breather cap.
Page 49 AT75 Operator · Service · Maintenance Manual Maintenance Lower Cab Access The AT75 is equipped with a lower Cab Access Panel (7) for easier access for service and repair. To lower the panel, remove the two bolts (8) on the lower right rear of the cab using a 9/16 wrench.
Page 50 AT75 Operator · Service · Maintenance Manual Maintenance SUPPLY 10 PSI CHECK FILL MAXIMUM RESERVOIR COMPRESSED FITTINGS MUST WITH PROPER SEALED FILTERED TIGHT RESERVOIR FLUID CHARGE PRESSURE UNTIL AT LEAST CHARGE PRESSURE 40 S 200 TO GAUGE 220 PSI STARTS CLIMBING...
Page 51 AT75 Operator · Service · Maintenance Manual Maintenance LOOSEN CASE DRAIN OUTLET AT MOTOR ALLOW FLUID TO FILL BOTH PUMP AND MOTOR CASES CONTROL WHEN PRIME FLUID MOVER NEUTRAL APPEARS 40 SECONDS TIGHTEN CASE DRAIN OUTLET LOW SPEED AT MOTOR...
Page 52 AT75 Operator · Service · Maintenance Manual Maintenance Cooling System - Drain, Flush Engine Coolant Level - Fill Neck The coolant level should be checked daily prior to startup by visually looking into radiator fill. Coolant level should be visible at the bottom of the fill neck (3). If the coolant level...
Page 53: Changing The Engine Oil
AT75 Operator · Service · Maintenance Manual Maintenance NOTICE Always check oil level while machine is parked on level ground. DO NOT REMOVE SCREENS WHILE IN NOTICE OPERATION. ROTATING FAN BLADES CAN CAUSE SEVERE INJURY. MAKE SURE THE Check the oil level daily. Low oil level can cause ENGINE IS OFF BEFORE REMOVING THE severe engine damage.
Page 54: Fuel System
Fuel System Always carry an extra replacement element as one tank of The AT75 is equipped with a water separator (4) and a fuel contaminated fuel can plug a fuel filter. filter (3). the fuel filter is located beside the engine oil filer...
Page 55: Fuel Filter Replacement
Follow the instructions found in the Engine Maintenance Manual. Note: If the AT75 is ran low or out of fuel, after refilling the tank, the system may need to be primed as if you changed the filter to remove air trapped in the system.
Page 56: Di-Electric Testing
Not keeping the boom clean both inside and outside can cause the boom to fail a di-electric test. Rayco recommends washing the boom by hand with soap and water. Using a pressure washer can cause water to diffuse through the fiberglass.
Page 57 The springs provide a means of softening the shock load on the drive system and drive chain, along with helping it to The AT75 boom is designed to float in the cradle to allow maintain proper chain tension. If the drive chain jumps off...
Page 58 AT75 Operator · Service · Maintenance Manual Maintenance Boom Rotate Motor and Chain Anytime that the boom clamps are removed or any service work is performed on the boom, the boom rotate motor needs to be adjusted. To adjust the chain, remove the top covers(1) on the boom cradle to expose the chain and motor(2).
Page 59 AT75 Operator · Service · Maintenance Manual Maintenance 800.392.2686...
Page 60: Control Valve
AT75 Operator · Service · Maintenance Manual Maintenance Control Valve • Facing pump stack, on RH side of saw pump, use 3/16” Allen wrench, need jam nut size • Starting point for saw speed screw: .450” (from pump case to end of screw, screw almost all the way in...
Page 61: Manual Brake Release
• Boom up: 6.5gpm, 14 seconds (full boom down to full boom up) To tow or move the AT75 in the event that the machine • Boom Telescope: 165ft/min, 9-10 seconds (full retract cannot move itself the gear case can be placed into to full out) neutral.
Page 62: Hose Replacement
(replacement part number 805874). To wind the reel using the wrenches Rayco provides align the wrench’s reel slot and place it over top the end of the reel shaft.
Page 63 AT75 Operator · Service · Maintenance Manual Maintenance Hose Winding The hose reels on the AT75 need to be properly wrapped for proper performance. To properly wrap hoses: 5. Wrap the first two wraps of the hose on the left side of the reel elbow (narrow side).
Page 64: Saw Blade
AT75 Operator · Service · Maintenance Manual Maintenance Saw Blade BEFORE SERVICING THE SAW BLADE, PERFORM CORRECT LOCK-OUT/TAG-OUT PROTOCOL. DO NOT ATTEMPT TO SERVICE OR REPLACE SAW BLADE WHILE THE MACHINE IS RUNNING. DEATH OR SERIOUS INJURY WILL OCCUR. BEFORE REMOVING SAW BLADE, PLACE A...
Page 65 AT75 Operator · Service · Maintenance Manual Maintenance Grease & Oil - Buildup & Replace • Apply lubricant to the main boom pivot grease fittings (1)until lubricant seeps out from between the black and yellow frames. ACCUMULATED GREASE AND OIL ON A MACHINE IS A FIRE HAZARD.
Page 66 AT75 Operator · Service · Maintenance Manual Maintenance • Apply 3 pumps of lubricant to the base end lift cylinder • Apply 5 pumps of lubricant to each of the swing gear grease fitting (4). bearings grease fittings (7). • Apply 3 pumps of lubricant to the rod end lift cylinder grease fitting (5).
Page 67 AT75 Operator · Service · Maintenance Manual Maintenance • Apply 2 pumps of lubricant to each of the cab door grease fittings (12). • Apply 3 pumps of lubricant to the saw blade load adapter grease fitting. (13) • Apply 3 pumps of lubricant to the base end of the blade cylinder grease fitting (10).
Page 68 AT75 Operator · Service · Maintenance Manual Maintenance Pump Stack The picture above illustrates the location and function of each pump located on the engine assembly. The location of each pump is important to know and understand the function of the machine.
Page 69: Electrical Information
AT75 Operator · Service · Maintenance Manual Maintenance ELECTRICAL INFORMATION Cover Removal: Squeeze the clips and simply pull up the cover.. Frame Fuse Panel DO NOT STEAM CLEAN ANY ELECTRICAL OR ELECTRONIC COMPONENTS WHILE STEAM CLEANING THE ENGINE, AS IT COULD DAMAGE SENSITIVE PARTS.
Page 70 AT75 Operator · Service · Maintenance Manual Maintenance Gear Box - Drain and Fill...
Page 71 AT75 Operator · Service · Maintenance Manual Maintenance 800.392.2686...
Page 72 AT75 Operator · Service · Maintenance Manual Maintenance Axle - Drain and Fill...
Page 73 AT75 Operator · Service · Maintenance Manual Maintenance 800.392.2686...
Page 74: Troubleshoot
AT75 Operator · Service · Maintenance Manual Troubleshoot Use ULSD fuel only...
Page 75: Cleaning The Cooler
AT75 Operator · Service · Maintenance Manual Troubleshoot Troubleshooting - Engine 3. Move the machine to the designated wash area; put the machine on an incline with the front of the machine being Overheating higher than the rear to aid in draining while cleaning.
Page 76 AT75 Operator · Service · Maintenance Manual Wire Harness 38696 Rev A...
Page 77 AT75 Operator · Service · Maintenance Manual Wire Harness 38696 Rev A 800.392.2686...
Page 78 AT75 Operator · Service · Maintenance Manual Wire Harness 38695 Rev A...
Page 79 AT75 Operator · Service · Maintenance Manual Wire Harness 38692 Rev C 800.392.2686...
Page 80 AT75 Operator · Service · Maintenance Manual Wiring Harness 38694 Rev A...
Page 81 AT75 Operator · Service · Maintenance Manual Battery Cable Kit 38697 Rev C 800.392.2686...
Page 82 AT75 Operator · Service · Maintenance Manual Main Wire Harness 38691 Rev D THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF RAYCO MFG, INC. ANY REPRODUCTION IN PART OR WHOLE WITHOUT THE WRITTEN PERMISSION OF RAYCO MFG, INC. IS PROHIBITED. BRN/WHT...
Page 83 AT75 Operator · Service · Maintenance Manual Main Wire Harness 38691 Rev D ENGINE HARNESS REVISIONS INTERFACE REV. DATE DESCRIPTION ECO# (LGT PWR) (FRAME GRD #2) GRY/WHT See Sheet1 RED/WHT (HORN) PUR/WHT GRD) (LCM PWR) RED/WHT (ECM PWR) (LCM PWR)
Page 84 AT75 Operator · Service · Maintenance Manual Main Wire Harness 38691 Rev D FROM WIRE DESCRIPTION GAUGE COLOR PLUG# PIN# (FUNCTION IMPRINT) PLUG# PIN # BATT HOT DIFF LOCK DK BLU LT BLU BRAKE GRY/WHT FF #1 RUN PWR CRAB ST...
Page 85 AT75 Operator · Service · Maintenance Manual Main Wire Harness 38691 Rev D FRAME GRD #2 SP12 HORN PWR GRY/BLK FRAME GRD #2 SP12 LCM PWR HORN GRY/WHT FF #1 FAN PWR FF #2 ECM ON SIG FF #1 LCM PWR...
Page 86 AT75 Operator · Service · Maintenance Manual Main Wire Harness 38691 Rev D FRAME GRD #1 SP11 FRAME GRD #1 SP11 5V GRD BLK/YLW 5V PWR RED/YLW PILOT PRESS 5V GRD BLK/YLW 5V PWR RED/YLW SAW PRESS M 2-SPD SOL...
Page 87 AT75 Operator · Service · Maintenance Manual Main Wire Harness 38691 Rev D LCM PWR RED/WHT LCM GRD BRN/WHT BATT PWR SP13 LGT PWR COOLANT LVL SP10 COOLANT SW GRD COOLANT SW PWR FRAME GRD #2 SP12 RUN PWR A/C CLUTCH...
Page 88 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev A (Upper Structure) 805944...
Page 89 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev A(Upper Structure) 805944 800.392.2686...
Page 90 AT75 Operator · Service · Maintenance Manual Adapter Kit Rev A(Upper Structure) 805944A ITEM PART # DESCRIPTION FF6400-06-06 ADAPTER -06MORFS X -06MORB FF6600-08-08-08 SWIVEL BRANCH TEE -08 MORFS X -08 MORFS X -08 FORFSX FF6801-12-12 ELBOW 90° -12MORFS X -12MORB...
Page 91 AT75 Operator · Service · Maintenance Manual Hose Kit Rev C(Upper Structure) 805944H HOSE 8R16-08FFX90L -08FSX -49” HOSE 8R16-08FFX90 -08FSX -67” HOSE 8R16-08FSX -08FFX90L -67” HOSE 6R16-06FFX90 -06FSX -67” HOSE 6R16-06FFX90L -06FSX -67” HOSE 16R4-16FSX -16FSX -113” HOSE 12R16-12FSX45 -12FSX -47”...
Page 92 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev B (A/C) 38755...
Page 93 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev B (A/C) 38755 800.392.2686...
Page 94 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev A (Cab) 805127 ITEM PART # DESCRIPTION FF6400-04-06 ADAPTER -04MORFS X -06MORB FF2700-04-04WLN BULKHEAD UNION -04MORFS X -04MORFS w/LOCK NUT FF6502-04-04 ELBOW 45 -04MORFS X -04FORFS...
Page 95 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev A (Cab) 805127 ITEM PART # DESCRIPTION HOSE 4R17-04FSX-04FSX-34.5” HOSE 4R17-04FSX-04FSX-36.5” HOSE 4R17-04FSX-04FSX-38.5” 800.392.2686...
Page 96 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev A (Frame) 805945...
Page 97 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev A (Frame) 805945 800.392.2686...
Page 98 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev A (Frame) 805945...
Page 99 AT75 Operator · Service · Maintenance Manual Hose & Adapter Kit Rev A (Frame) 805945 800.392.2686...
Page 100 AT75 Operator · Service · Maintenance Manual Adapter Kit (Frame) Rev B 805945 ITEM PART # DESCRIPTION INTENTIONALLY LEFT BLANK 4501-16-16F ELBOW 90° -16 BEADED X -16MNPT INTENTIONALLY LEFT BLANK 5652-16-16-16-16F CROSS -16FNPT X -16FNPT X -16FNPT X -16FNPT 4601-16-12F ELBOW 90°...
Page 101 AT75 Operator · Service · Maintenance Manual Adapter Kit Rev B (Frame) 805945 FF6804-06-06-06 RUN TEE -06MORFS X -06MORB X -06MORFS 5500-06-06 ELBOW-90° -06MP X -06MP 6068-06-14 ADAPTER -06MORFS X -14MMETRIC w/WASHER & O-RING 210-FS-10 HOSE END STRAIGHT 5/8 BARBED X -10MORFS...
Page 102 AT75 Operator · Service · Maintenance Manual Hose Kit Rev A (Frame) 805945 ITEM PART # DESCRIPTION INTENTIONALLY LEFT BLANK 4501-16-16F ELBOW 90° -16 BEADED X -16MNPT INTENTIONALLY LEFT BLANK 5652-16-16-16-16F CROSS -16FNPT X -16FNPT X -16FNPT X -16FNPT 4601-16-12F ELBOW 90°...
Page 103 AT75 Operator · Service · Maintenance Manual Hose Kit Rev A (Frame) 805945 FF2650-06-06- UNION CROSS -06MORFS X -06MORFS X -06MORFS X -06MORFS 06-06 FF6804-06-06-06 RUN TEE -06MORFS X -06MORB X -06MORFS 5500-06-06 ELBOW-90° -06MP X -06MP 6068-06-14 ADAPTER -06MORFS X -14MMETRIC w/WASHER & O-RING...
Page 104: Specifications
AT75 Operator · Service · Maintenance Manual Specifications & F AYCO UBRICATION LUID PECIFICATIONS Engine Oil During the initial break-in period, the engine will consume more oil than usual. Check the engine oil level daily. ONLY USE CH-4 (or better) CLASSIFICATION OILS WITH A 10 TBA OR HIGHER.
Page 105: Lubricating Grease
A synthetic 75W-140 or 80W-140 heavy duty GL-5 gear oil could also be used in warm climates to extend gear life. MWF Hydrostat Drive AT75 Operator · Service · Maintenance Manual The Hydrostat drive is shipped with Mobil 1 synthetic engine oil, SAE 15W-50. Do not mix hydrostat and different lubricants! Specifications The Differential Gearbox is shipped with 80-90W performance gear oil.
Page 106 AT75 Operator · Service · Maintenance Manual Specifications RAYCO COOLANT SPECIFICATIONS Coolant / Antifreeze Recommendations Most commercial antifreezes are formulated for gasoline engine applications and will, therefore, have high silicate content. These antifreezes are intended for aluminum automotive engines and are unacceptable for diesel engines. Use antifreeze that is formulated with a low silicate level and the proper coolant additives for heavy duty diesel engines.
Page 107: Torque Specifications
AT75 Operator · Service · Maintenance Manual Specifications Torque Specifications General Torque Information Mismatched or incorrect fasteners can result in damage or malfunction, or possible injury. Take care to avoid mixing metric dimensioned fasteners and inch dimensioned fasteners. Exceptions to these torques are given in the Maintenance Section, if necessary.
Page 108 FUEL CAP 804988 MANUAL PART # DESCRIPTION 805391 4” VENTED FUEL CAP SAFETY SALES KIT - 38504 KEY CHAIN KEY CHAIN - #1 RAYCO PART # DESCRIPTION LETTER CUSTOMER LETTER 36905 PLATE, BRAKE LINE FITTING LOCK OSMAT75 OPERATOR SERVICE MAINTENANCE MANUAL...
Page 109: Individual Components
Belts will be covered under warranty only if Rayco on any Rayco product are those set forth on this page. In receives warranty from their supplier. no event will the dealer and or Rayco be liable for incidental b.
Page 110 We care about your safety. When operating your RAYCO® machinery always wear an ap- proved helmet complete with ear muffs, face shield and the proper eye wear. Never operate under the influence of alcohol or drugs. Know your RAYCO, read and understand your owner’s manual cover to cover.