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Mec 2047ES Service And Parts Manual

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CE SERVICE AND PARTS MANUAL
2047ES / 2647ES / 3247ES
Serial Number Range
2047ES:
9801000 - Present
2647ES:
9901000 - Present
3247ES:
10001000 - Present
Part # 90972 R2
March 2008

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Summary of Contents for Mec 2047ES

  • Page 1 CE SERVICE AND PARTS MANUAL 2047ES / 2647ES / 3247ES Serial Number Range 2047ES: 9801000 - Present Part # 90972 R2 2647ES: 9901000 - Present March 2008 3247ES: 10001000 - Present...
  • Page 2 Aerial Platform Sales Corp. 1775 Park Street, Suite 77 • Selma, CA 93662 USA Ph: 1-800-387-4575 • 559-891-2488 • Fax: 559-891-2448 E-mail:info@mecawp.com • Web:www.mecawp.com...

  • Page 3: Table Of Contents

    Alarms and Switches ................... 2-8 Continuity Checks ....................2-11 Diode Board ......................2-12 Sevcon Motor Speed Controller ................ 2-13 Load Sensing System ..................2-14 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page i...
  • Page 4 Steer Cylinder ....................4-8 Pothole Circuit ....................4-9 Platform Removal .................... 4-10 Lift Cylinder Removal and Installation ............. 4-11 Scissor Beam Assembly .................. 4-12 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page ii...

  • Page 5: 2047Es - Serial # 9801100 - Current

    3247ES - Serial # 10001000 - 10001199 ........... 6-10 2047ES - Serial # 9801100 - CURRENT 2647ES - Serial # 9901200 - CURRENT 3247ES - Serial # 10001200 - CURRENT ..........6-12 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page iii...
  • Page 6 Table of Contents Parts Manual SECTION A: CONTROL BOXES SECTION B: PLATFORM AND RAILS SECTION C: SCISSORS SECTION D: HYDRAULICS SECTION E: BASE SECTION F: DECALS March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page iv...

  • Page 7: Hydraulic System

    Parking Brake and Towing Circuit ......................... 1-6 Emergency Systems And Procedures ........................1-6 Steering Circuit ............................... 1-8 Platform Lift Circuit ..............................1-9 Cylinder Repair ..............................1-10 Hydraulic Manifold ............................... 1-13 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 1-1...

  • Page 8: Hydraulic Fluid

    FLUID LEAKS UNDER PRESSURE MAY NOT ALWAYS BE VISIBLE. Fluid Recommendations MEC recommends the use of ISO Grade 32 hydraulic fluid. A 150SSU EQUIVALENT substitute can be used if absolutely necessary. Mineral-based hydraulic fluids produced by different compa- nies will USUALLY mix with each other satisfactorily, but this IS NOT RECOMMENDED. When in doubt, consult with your supplier.
  • Page 9 NOTE: Avoid mixing petroleum and synthetic base fluids. It is not advisable to mix fluids of different brands or types, except as recommended. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 1-3...

  • Page 10: Hydraulic System Components

    Strainer Fluid Level Sight Gauge Plastic Hydraulic Reservoior Hydraulic Pump Early Models are equipped with and Motor a Welded Steel Hydraulic Reservoior ART_2170 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 1-4...
  • Page 11 (2) front wheels. ART_2165 Braking Circuit Rear brakes are released whenever the machine is commanded to drive. Brake 2047ES / 2647ES / 3247ES ART_2171 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 1-5...

  • Page 12: Parking Brake And Towing Circuit

    ELEVATED, HAVE AN EXPERIENCED OPERATOR USE THE EMERGENCY LOWERING PROCEDURE TO SAFELY LOWER THE PLATFORM. DO NOT ATTEMPT TO CLIMB DOWN SCISSOR ASSEMBLY. BEFORE LOWERING PLATFORM, RETRACT THE DECK EXTENSION. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 1-6...
  • Page 13 2. Once the platform is fully lowered, release the toggle switch to close the valve 3247ES 90918 EMERGENCY LOWERING ACTUATE SWITCH TO LOWER PLATORM 90918 ART_2173 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 1-7...

  • Page 14: Steering Circuit

    Cylinder Mount Bolts 102 - 112 138 - 152 Shaft Plate Bolts 86 - 96 113 - 130 ART_2167 Steering Link Bolts 26 - 28 35 - 38 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 1-8...

  • Page 15: Platform Lift Circuit

    The normally closed holding valve prevents retraction of the cylinder rod should a hydraulic line rupture or a leak develop between the cylinder and its related control valve. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008...

  • Page 16: Cylinder Repair

    1. Tag hoses for proper reassembly. 2. Disconnect hoses and IMMEDIATELY cap the openings to prevent contamination. 3. Remove cylinder from the machine as described in Section 3 . March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 1-10...
  • Page 17 Polishing is a sign of uneven loading. Check for roundness. If a polished surface is not round within .007 in (0.18 mm) replace the cylinder. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008...
  • Page 18 NOTE: It is very important to keep all parts clean when working with hydraulic cylinders, even one small piece of dirt or grit can damage the cylinder. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 1-12...

  • Page 19: Hydraulic Manifold

    3. Connect hydraulic hoses (as previously tagged). Be certain to tighten hoses. 4. Connect the battery. 5. Operate each hydraulic function and check for proper operation and leaks. 6. Adjust valve pressures. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 1-13...
  • Page 20 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 1-14...
  • Page 21 Alarms and Switches ............................. 2-8 Continuity Checks ..............................2-11 Diode Board ................................2-12 Sevcon Motor Speed Controller .......................... 2-13 Load Sensing System ............................2-14 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 2-1...

  • Page 22: Electrical System - General

    (Forward/Down, Reverse/Up and accelerator demand), Steer (Right/Left). A torque mode switch causes both hydraulic motors to operate in parallel rather than in series for speed control mode (normal). March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 2-2...

  • Page 23: Deutsch Connectors

    • Close the handles of the crimping tool, then release the handles to remove the crimped contact. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 2-3...

  • Page 24: Batteries

    Below 40 °F (4 °C) None required Above 60 °F (15 °C) Every month 40 ° - 60 °F (4 ° - 15 °C) Every 2 months March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 2-4...
  • Page 25 SPECIFIC GRAVITY VOLTS DC 6V BATTERY 12V BATTERY EACH CELL PER CELL Fully Charged 1.280 2.10 6.30 12.60 Fully Discharged 1.130 1.75 5.19 10.50 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 2-5...
  • Page 26 Emergency Lowering System - 3247ES Battery charging current is regulated by a diode in the charger supply cable. Refer to the illustra- tion on the following page. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 2-6...
  • Page 27 Connect battery cables. CHARGER DIODE 12 VDC BATTERY 12 VDC BATTERY CHARGER CABLE 6 VDC BATTERY 24 VDC BATTERY CHARGER CABLE ART_2175 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 2-7...

  • Page 28: Alarms And Switches

    It is activated at the upper controls and sounds at the ground alerting personnel to clear the machine’s path to avoid hazards or unsafe conditions. Horn (option) Terminal Block ART_2183 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 2-8...
  • Page 29 THE MOVEMENT ALARM IS PROVIDED FOR YOUR PROTECTION, AND PROTECTION OF PERSONS WORKING IN THE IMMEDIATE AREA. DISABLING THIS IMPORTANT SAFETY DEVICE MAY RESULT IN SERIOUS INJURY OR DEATH. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 2-9...
  • Page 30 Base Controls. Elevate the platform to approximately 2.5 m. An alarm should sound at Upper Control station. If it does not, review Section 3 for troubleshooting of the Platform Overload Sensing System. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 2-10...

  • Page 31: Continuity Checks

    • With one probe of ohm meter to common and other probe to closed contact, low resis- tance should be seen. Move limit switch arm and no resistance should be seen. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008...

  • Page 32: Diode Board

    INPUT Lift Up 8601 INPUT Limit Switch (24V = platform down) OUTPUT Enable, from lower Lift switch OUTPUT To Sevcon (for speed cutback) ART_2181 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 2-12...

  • Page 33: Sevcon Motor Speed Controller

    Lift Valve B- (provides GROUND signal to Lift Valve) none none Accelerator reference signal (3.6 Volts to Potentiometer) none none none none none none ART_2182 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 2-13...

  • Page 34: Load Sensing System

    Signal to Motor Controller (LIFT, DRIVE, STEER) Cutout Relay (B–) Cutout Relay (B+ when not overloaded) RL1 Overload Cutout Relay No Connection No Connection ART_2474 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 2-14...

  • Page 35: Platform Overload System

    GP102 - EZcal Help Messages .......................... 3-4 GP102 LED Flash Codes ..........................3-7 Calibration ................................3-8 CALIBRATION TROUBLESHOOTING; Failure Messages ................3-11 CALIBRATION TROUBLESHOOTING; Information Messages ................ 3-16 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 3-1...

  • Page 36: General Description

    In addition the automatic armguard cutout and descent alarm are controlled by this system. To access the control module for trouble- shooting and calibration, the EZcal hand held device is required. These are available from MEC Aerial Platform Sales Corp.

  • Page 37: Electrical Connections

    Lift, Drive, or Steer Function Wire 45 RL1-7 Cutout Relay B– Wire 44 RL1-8 Cutout Relay input (B+ when platform not overloaded) ART_2431 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 3-3...

  • Page 38: Troubleshooting

    • When the platform is not elevated, the measured height should be below that stored during load calibration All vehicle operation will be prevented until the problem is corrected. LED flash code 4. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 3-4...
  • Page 39 LED flash code 3. TESTING HWFS When the GP102 is powered up, it carries out various tests to ensure that it is functioning safely. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 3-5...
  • Page 40 When the GP102 is powered up, all controls must be in neutral to allow safe testing of the fail-safe output; no functions are allowed until testing is complete. LED flash code 2. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 3-6...

  • Page 41: Gp102 Led Flash Codes

    15 flash will be present whenever a new circuit board is installed previous to calibration. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008...

  • Page 42: Calibration

    Move machine to an area that is perfectly level as measured by a spirit level or other leveling device. An Ezcal hand-held device (MEC part # 90888) is required to carry out all calibration procedures on the GP102 Load sense control module.
  • Page 43 Note: The platform will lower incrementally during this phase on the calibration. Do not release the switch until fully lowered. Release switch. • Display reads TOTAL DATA #XX, then PLATFORM EMPTY? "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 3-9...
  • Page 44 Display reads PLEASE LOWER. Hold switch in down position until platform is in the fully lowered position. Release switch. Display reads FINISHED. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 3-10...

  • Page 45: Calibration Troubleshooting; Failure Messages

    DYNAMIC lift. The height sensor output must be between 1.0V and 4.0V. Check DIAGNOSTICS / SENSORS to see the output. A reading of 0V or 5V is probably due to a wiring problem. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 3-11...
  • Page 46 This message is given if the elevation switch (P2-10) closed during lower at a F18:LOW ELEV.CLOSE too low height (below 5%). Check CALIBRATIONS / HEIGHT CALS; the “ElevDown” value shows the recorded height where the switch opened. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 3-12...
  • Page 47 This message occurs if too many static measurements are taken during a F24:TOO MANY calibration step. In the rare event that this occurs, please call MEC for assistance. F25:CHECK ELEV This message indicates a problem with the elevation switch (P2-10) during the F26:CHECK ELEV STATIC phases.
  • Page 48 This message would occur if the pressure sensor was disconnected, or if there were some other wiring error. Check DIAGNOSTICS / SENSORS to check the pressure. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 3-14...
  • Page 49 The height sensor output must be between 0.5V and 4.5V. Check DIAGNOSTICS / SENSORS to see the output. A reading of 0V or 5V is probably due to a wiring problem. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 3-15...

  • Page 50: Calibration Troubleshooting; Information Messages

    LOWER LOADED being lowered to the next measurement height. This message is displayed during the DYNAMIC phase while the platform is LOWERING being lowered. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 3-16...
  • Page 51 If the previous DYNAMIC calibration was in error, or if the height or pressure sensor is replaced, it will be necessary to redo the DYNAMIC phase. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008...
  • Page 52 If the previous LOADED calibration was in error, or if the pressure sensor is replaced, it will be necessary to redo the LOADED phase. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 3-18...
  • Page 53 Steer Cylinder ..............................4-8 Pothole Circuit ..............................4-9 Platform Removal ............................4-10 Lift Cylinder Removal and Installation ......................4-11 Scissor Beam Assembly ..........................4-12 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 4-1...

  • Page 54: Torque Specifications

    79 - 84 79 - 85 107 - 115 83 - 87 113 - 118 136-144 184 - 195 100 - 110 136 - 149 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 4-2...

  • Page 55: Base / Undercarriage

    1. Tag hoses for proper reassembly. 2. Disconnect hoses and IMMEDIATELY cap the openings to prevent contamination. 3. Torque hose fittings according to the Hydraulic Torque Specification Table. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 4-3...

  • Page 56: Raising The Machine

    5. Lower the machine to rest on the jack stands and inspect for stability. To lower the machine 1. Raise machine slightly and remove jack stands. 2. Lower the machine and remove the jack. 3. Remove chocks. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 4-4...

  • Page 57: Tires/Wheels

    5. Lower the machine to the ground and remove the chocks. 6. Torque lug nuts to 75 to 85 ft.-lbs. (102 to 115 Nm). "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 4-5...

  • Page 58: Front Drive Motors

    Motor Mount remove the drive motor. Replace Motor Mount Nuts Installation is reverse of removal. Lug Nuts Motor Motor Shaft Nut Motor Mount Bolts ART_2187 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 4-6...

  • Page 59: Rear Wheel Brakes

    75 - 85 102 - 115 Brake Mount Bolts 65 - 72 88 - 97.5 “T” Fitting (male-male-female) Female to Male Hose Adapter ART_2188 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 4-7...

  • Page 60: Steer Cylinder

    • when all air is purged, Steering Link tighten hose Bearing connections. Steer Cylinder Seal Replacement Refer to Section 1 for seal replace- Steering Stop ment instructions. ART_2193 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 4-8...

  • Page 61: Pothole Circuit

    Pothole Lever Pivot Snap Ring Depression Washer Rail Roller Bearing Pothole Lever, Left Side Pothole Lever, Right Side " x " Nyliner Bearing ART_2191 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 4-9...

  • Page 62: Platform Removal

    8. Installation is reverse of removal. Horn (option) Terminal Srtip Cover Slide Block Fixed Block TORQUE Ft. lbs. Fixed Block Bolts 86 - 96 116 - 180 ART_2202 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 4-10...

  • Page 63: Lift Cylinder Removal And Installation

    Cylinder Nylon Washer Support Beam Retaining Nylon Ring Washer TORQUE Ft. lbs. ART_2203 Retaining Plate Bolts 6¼ - 7¼ 8.5 - 10 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 4-11...

  • Page 64: Scissor Beam Assembly

    TORQUE Ft. lbs. Stationary Mount Bolts 86 - 96 116 - 180 Slide Block ART_2204 Ladder Mount Bolts 86 - 96 116 - 180 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 4-12...

  • Page 65: Troubleshooting

    Sevcon Motor Speed Controller .......................... 5-14 LED Diagnostics Definitions (Flash Codes) ..................... 5-15 Sevcon Motor Speed Controller - Connections ....................5-17 Troubleshooting Battery Charger ........................5-19 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-1...

  • Page 66: General Troubleshooting Tips

    ♦ Steering flow control valve PFC1 and relief valve RV3 are replaced by a single valve FRR1. Refer to the accompanying illustrations when using the Troubleshooting Guide. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-2...
  • Page 67 MV1 CV1 PORT 2647ES PLUGGED PFC1 CBV1 MAIN MANIFOLD (Current Models) TEST PORT FRR1 CBV1 Hydraulic Valve Locations, 2047ES - 2647ES - 3247ES, CE ART_2484 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-3...

  • Page 68: Hydraulic Pressure Adjustment Procedures

    ♦ When correct pressure is obtained replace tamper proof cap with a new one. CAUTION: Do not operate pump with tamper proof cap removed as fluid will emit under pressure. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-4...
  • Page 69 ♦ Turn adjustment screw “IN” to increase the pressure. ♦ Turn adjustment screw “OUT” to decrease the pressure. ♦ When correct pressure is obtained replace tamper proof cap with a new one. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-5...

  • Page 70: Troubleshooting

    Check cable adjustment/operation (if equipped) equipped) sticking 6- flash code at motor controller Test potentiometer POT1 for open circuit Located in upper control box, replace March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-6...

  • Page 71: Troubleshooting

    Valve coil failed on either Test, replace cylinder Lowers but not Down valve on one cylinder Check valve coils, wiring completely - inoperative 3247ES only "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-7...
  • Page 72 Check valves for contamination, replace SV4 or SV6 drive either One or both Wheel motors WM1 Test wheel motors direction & WM2 internal bi-pass Replace wheel motors Torque switch March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-8...
  • Page 73 Check SV3 for contamination direction Replace SV3 regardless of Drive valve SV3 powered in one Short in wiring, faulty diode board. direction direction operated "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-9...
  • Page 74 NOT operating connection control box to Diode Board while attempting to Failed diode in diode board Test diodes on diode board steer Replace diode board March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-10...
  • Page 75 Inspect SV1 valve for debris direction Replace SV1 regardless of Drive valve SV1 powered in one Short in wiring, faulty diode board. direction direction request "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-11...
  • Page 76 6] Steering Micro-Switches 7] Drive Enable Switch 8] Reverse/Down Rocker Switch 9] Forward/Up Rocker Switch 10] Potentiometer 11] Terminal Strip ART_2429 12] Control Box Alarm March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-12...
  • Page 77 14] Hour Meter 3] Circuit (Diode) Board 15] GP102 Load Sense Module 4] Battery Cutoff Switch 16] Overload Cutout Relay 5] MotorControl Unit ART_2428 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-13...

  • Page 78: Sevcon Motor Speed Controller

    Lift Valve B- (provides GROUND signal to Lift Valve) none none Accelerator reference signal (3.6 Volts to Potentiometer) none none none none none none ART_2182 March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-14...

  • Page 79: Led Diagnostics Definitions (Flash Codes)

    • Incomplete circuit to the Sevcon pin #6 If the motor and contactor circuits are diagnosed as working properly: • Sevcon internal fault continued… "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-15...
  • Page 80 This code will interrupt or prevent lift function but will allow drive and steer functions. When lift is interrupted due to a 9 flash, the electric motor will still run. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-16...

  • Page 81: Sevcon Motor Speed Controller - Connections

    Full speed: 24 V DC signal from Creep speed: 0 V DC. limit switch or • Speed cutback is the elevated drive speed. Lift circuit "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-17...
  • Page 82 • 0 volts at idle = 3 flash code • Above 20 volts at idle = 4 flash code • No voltage change after Motor Start Relay signal = 5 flash code. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-18...

  • Page 83: Troubleshooting Battery Charger

    The MEC battery charger is a fully automatic type with a maintenance feature that will maintain battery voltage indefinitely when connected to an AC power source. The battery charger should be plugged into an unswitched AC source if stored for long periods of time.
  • Page 84 5.) The AC supply circuit breaker or fuse is blown If the problem is not listed above, refer the problem to a qualified service agent for additional trouble shooting procedures. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-20...
  • Page 85 Replace batteries. • Battery pack too large for charger. Use higher output charger or unplug then plug-in charger to restart charge cycle to complete charging. "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications March 2008 Page 5-21...
  • Page 86 • If the charger operates properly on other AC outlets, a qualified Person should correct the AC outlet problem. • If the AC supply checks good, the charger should be replaced. March 2008 "2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications Page 5-22...

  • Page 87: Schematics

    3247ES - Serial # 10001000 - 10001199 ....................6-10 2047ES - Serial # 9801100 - CURRENT 2647ES - Serial # 9901200 - CURRENT 3247ES - Serial # 10001200 - CURRENT ....................6-12 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-1...

  • Page 88: Hydraulic Schematics

    Test Port Main Manifold (MA-1) Wheel Brake Drive Wheel Wheel Brake Drive Wheel Wheel Motor, Right Side Machine Base Wheel Motor, Left Side Machine Base March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-2...
  • Page 89 2047 & 2647 ONLY WHEEL MOTOR 5 PSI PORT “A” 2100 PSI 2047 & 2647 1900 PSI 3247 TP−1 2750 PSI BRAKE RELEASE HAND PUMP "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-3...

  • Page 90: 2047Es - Serial # 9801100 - Current 2647Es - Serial # 9901200 - Current 3247Es - Serial # 10001200 - Current

    Upper Lift Cylinder Manifold (MA-5), 3247 Wheel Brake Drive Wheel Wheel Brake Drive Wheel Wheel Motor, Right Side Machine Base Wheel Motor, Left Side Machine Base March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-4...
  • Page 91 CYLINDER CYL1 BRAKES MA−1 ORF2 ø.040 RIGHT ORF1 WHEEL ø.040 2400 MOTOR FRR1 0.75 GPM 850 PSI LEFT WHEEL 1500 PSI MOTOR 2750 PSI CBV1 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-5...
  • Page 92 SOL15 Coil (SV11) Down, Lift Cylinder SV11 Spool Valve Down, Lift Cylinder TEST SOL6 SOL7 SOL1 SOL5 PORT SOL8 SOL2 SOL4 PFC1 CBV1 SOL9 ORF1 March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-6...
  • Page 93 SOL15 Coil (SV11) Down, Lift Cylinder SOL3 SV11 Spool Valve Down, Lift Cylinder SOL5 SOL1 SOL4 SOL2 SOL7 SOL6 SOL8 CBV1 ORF1 PLUG FRR1 ORF2 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-7...
  • Page 94 THIS PAGE INTENTIONALLY LEFT BLANK March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-8...

  • Page 95: Electric Schematics

    4. Switch LS2 and LS3 makes the N/C set of contacts when the Pothole Bars are down and locked in place. ART_2236 ART_2470 LS2 & LS3 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-9...

  • Page 96: 2047Es - Serial # 9801000 - 9801099 2647Es - Serial # 9901000 - 9901199 3247Es - Serial # 10001000 - 10001199

    Coil, Down Solenoid Activate Down Valve (SV11) Upper Lift Cylinder, 3247 ONLY SOL15 Coil, E-Down Solenoid Activate Emergency Down Valve (SV11) Lower Lift Cylinder, 3247 ONLY March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-10...
  • Page 97 SOL2 SOL1 STEER SOL5 TORQUE RIGHT LEFT SOL6 TORQUE SOL3 DECEL CHRL 1 EMERGENCY SOL9 MAIN BRAKE DOWN B1−B4 P N G MANIFOLD (3247 ONLY) "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-11...

  • Page 98: 2047Es - Serial # 9801100 - Current 2647Es - Serial # 9901200 - Current 3247Es - Serial # 10001200 - Current

    Coil, Down Solenoid Activate Down Valve (SV11) Upper Lift Cylinder, 3247 ONLY SOL15 Coil, E-Down Solenoid Activate emergency Down Valve (SV11) Upper Lift Cylinder, 3247 ONLY March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-12...
  • Page 99 RIGHT LEFT (MOTOR CONTROLLER) SOL5 TORQUE 200 AMP SOL3 SOL6 BRAKE/DECEL TORQUE MAIN MANIFOLD P13−1 P13−2 EMERGENCY CHRL 1 DOWN (3247 ONLY) B1−B4 P N G "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-13...
  • Page 100 WIRE # END VIEW OF D1 − D15 REMOVABLE CONTROL HARNESS R1 − R4 (OPTIONAL QUICK DISCONNECT) 16 (GND) TERMINAL BLOCK ON UNDERSIDE OF PLATFORM DECK March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-14...
  • Page 101 2047ES - 2647ES - 3247ES: all CE Reference Art #: none Publication Art #: 2471 REFER TO ELECTRIC SCHEMATIC Terminal Block 3247 ONLY UPPER LIFT CYL "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-15...
  • Page 102 STEER LEFT SOL12 SOL1 SOL2 TORQUE SOL5 SOL13 SOL4 SOL3 DECEL LIFT UPPER LIFT CYLINDER 3247ES SOL15 SOL14 SOL6 SOL7 TORQUE SOL8 FORWARD REVERSE DRIVE March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-16...
  • Page 103 Steer Right INPUT Lift Up INPUT Limit Switch (24V = platform down) OUTPUT Enable, from lower Lift switch 8601 OUTPUT To Sevcon (for speed cutback) "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications March 2008 Page 6-17...
  • Page 104 GP-102 (J3 - Pin 4) GP-102 (J3 - Pin 5) Inside Lower Control Box RL1 Overload Cutout Relay No Connection No Connection Overload Cutout Relay March 2008 "2047ES / 2647ES /3247ES" Service & Parts Manual - CE Specifications Page 6-18...

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