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Terex Genie GRT-1101 Service Manual

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Service Manual
GR
-12
™
GR
-15
™
GR
-20
™
GRC
-12
™
QS
-12R
™
QS
-15R
™
QS
-20R
™
QS
-12W
™
QS
-15W
™
QS
-20W
™
Serial Number Range
from GRR-10001
from GRP-60000
from GRT-1101
from GRCP-6000
from QSP-6000
Original Instructions
Part No. 1307550GT
Rev A1
December 2023

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Summary of Contents for Terex Genie GRT-1101

  • Page 1 Service Manual Serial Number Range ™ from GRR-10001 from GRP-60000 from GRT-1101 ™ ™ ™ from GRCP-6000 -12R ™ from QSP-6000 -15R ™ -20R ™ -12W ™ -15W ™ -20W ™ Original Instructions Part No. 1307550GT Rev A1 December 2023...

  • Page 2: Find A Manual For This Model

    Unrestricted with proper operation, inspection and scheduled maintenance. 1307550GT Rev A, February 2022 Fifth Edition, First Printing Genie is a registered trademark of Terex South Dakota, Inc. in the U.S.A. and many other countries. "GR", "GRC" and "QS" are trademarks of Terex South Dakota, Inc.
  • Page 3 December 2023 Service Manual Introduction Revision History Revision Date Section Procedure / Page / Description 2/2022 Initial Release Add facility code and serial break 12/2023 Front cover Add facility code and serial break for GR models Schematics Reference Examples: Section – Maintenance, B-3 Electronic Version Section –...

  • Page 4: Serial Number Legend

    Service Manual December 2023 Introduction Serial Number Legend 1 Model 2 Facility code 3 Sequence number 4 Serial label 5 Serial number (stamped on chassis, GR, GRC models) 6 Serial number (stamped on chassis, QS models) • GRC • QS R •...

  • Page 5: Safety Rules

    December 2023 Service Manual Safety Rules Section 1 Safety R ules Danger Failure to obey the instructions and safety rules in this manual and the appropriate Operator's Manual on your machine will result in death or serious injury. Many of the hazards identified in the operator's manual are also safety hazards when maintenance and repair procedures are performed.
  • Page 6 Service Manual December 2023 Safety Rules Personal Safety Workplace Safety Any person working on or around a machine Any person working on or around a machine must be aware of all known safety hazards. must be aware of all known safety hazards. Personal safety and the continued safe Personal safety and the continued safe operation of the machine should be your top...

  • Page 7: Table Of Contents

    December 2023 Table of Contents Introduction Introduction ......................ii Important Information ..................... ii Find a Manual for this Model .................. ii Revision History..................... iii Serial Number Legend ..................iv Section 1 Safety Rules ......................v General Safety Rules ..................... v Section 2 Specifications .......................
  • Page 8 December 2023 Table of Contents Section 3 Scheduled Maintenance Procedures ............... 10 Introduction ......................10 Maintenance Schedule ..................12 Pre-Delivery Preparation Report ................13 Scheduled and Programmed Maintenance Inspection Report ......14 Commissioning Procedures ................16 C-1 Perform 40 Hour Service ................16 Quarterly Maintenance Procedures ..............
  • Page 9 December 2023 Table of Contents Section 4 Repair Procedures ..................... 36 Introduction ......................36 Platform Controls ....................38 1-1 Circuit Board....................39 1-2 Joystick ......................40 1-3 Platfrom Controls Alarm ................. 41 1-4 Platform Emergency Stop Button ..............41 Ground Controls ....................43 2-1 Software Revision Level .................
  • Page 10 December 2023 Table of Contents Platform Components ..................66 9-1 Platform ......................66 9-2 Platform Extension Deck (if equipped) ............67 How to Remove the Platform Extension Deck, GR Models ......67 How to Remove the Platform Extension Deck, GRC Models ......68 9-3 Work Tray (if equipped) .................
  • Page 11 December 2023 Table of Contents Section 5 Diagnostics ....................... 105 Introduction ......................105 GCON I/O Map ....................107 Operation Indicator Codes (OIC)................ 108 Diagnostic Trouble Codes (DTC) ............... 108 Troubleshooting "HXXX" and "PXXX" Faults ............. 109 Fault Inspection Procedure ................110 Type "HXXX"...
  • Page 12 December 2023 Table of Contents Section 6 Schematics ....................... 125 Introduction ......................125 Electrical Component and Wire Color Legends ..........126 Wiring Diagram Ground and Platform Controls ..........128 Electrical Symbol Legend .................. 129 Hydraulic Symbols Legend ................130 Electrical Schematics ..................131 Electrical Schematic, GR •...

  • Page 13: Specifications

    December 2023 Service Manual Specifications Section 2 Specific ati ons Machine Specifications Batteries, Standard Voltage 6V DC Group Type T-105 Quantity Battery capacity, maximum 225AH Reserve capacity @ 25A rate 447 minutes Weight, each 62 lbs 28 kg Batteries, Maintenance-free (option) Voltage 6V DC Group...

  • Page 14: Performance Specifications

    Service Manual December 2023 Specifications Performance Specifications Rated work load at full height, maximum GR-12, GRC-12, GR-15 500 lbs Drive speed, maximum (standard platform) 227 kg 2.5 mph Platform stowed, fast GR-12, GR-15, GR-20 350 lbs 40 ft / 10.9 sec (AWP platform) 159 kg 4 km/h...

  • Page 15: Hydraulic Component And Manifold Specifications

    December 2023 Service Manual Specifications Hydraulic Component Manifold Component Specifications Specifications Function Pump Plug torque Type gear pump SAE No. 2 36 in-lbs / 4 Nm 0.244 cu in Displacement per revolution SAE No. 4 10 ft-lbs / 13 Nm 4 cc SAE No.

  • Page 16: Hydraulic Oil Specifications

    Service Manual December 2023 Specifications Hydraulic Oil Specifications Do not top off with incompatible hydraulic fluids. Hydraulic fluids may be incompatible due to the Hydraulic Fluid Specifications differences in base additive Genie specifications require hydraulic oils which are chemistry. When incompatible designed to give maximum protection to hydraulic fluids are mixed, insoluble systems, have the ability to perform over a wide...
  • Page 17 December 2023 Service Manual Specifications Chevron Rando HD Premium Oil Chevron 5606A Hydraulic Oil MV Fluid Properties Fluid Properties ISO Grade ISO Grade Viscosity index Viscosity index Kinematic Viscosity Kinematic Viscosity cSt @ 200°F / 100°C cSt @ 200°F / 100°C cSt @ 104°F / 40°C 33.5 cSt @ 104°F / 40°C...
  • Page 18 Service Manual December 2023 Specifications Petro-Canada Environ MV 46 UCON Hydrolube HP-5046 Fluid Fluid Properties Properties ISO Grade ISO Grade Viscosity index Viscosity index Kinematic Viscosity Kinematic Viscosity cSt @ 200°F / 100°C cSt @ 149°F / 65°C cSt @ 104°F / 40°C 44.4 cSt @ 104°F / 40°C cSt @ 0°F / -18°C...

  • Page 19: Hydraulic Hose And Fitting Torque Specifications

    December 2023 Service Manual Specifications Hydraulic Hose and Fitting SAE O-ring Boss Port Torque Specifications (tube fitting - installed into Aluminum) (all types) Your machine is equipped with Parker Seal-Lok™ SAE Dash Size Torque ORFS or 37° JIC fittings and hose ends. Genie 14 ft-lbs / 19 Nm specifications require that fittings and hose ends be torqued to specification when they are removed...

  • Page 20: Torque Procedure

    Service Manual December 2023 Specifications Torque Procedure JIC 37° fittings Align the tube flare (hex nut) against the nose Seal-Lok™ fittings of the fitting body (body hex fitting) and tighten the hex nut to the body hex fitting to Replace the O-ring. The O-ring must be hand tight, approximately 30 in-lbs / 3.4 Nm.
  • Page 21 December 2023 Service Manual Specifications Working clockwise on the body hex fitting, make a second mark with a permanent ink marker to indicate the proper tightening position. Refer to Illustration 2. Note: Use the JIC 37° Fitting table in this section to determine the correct number of flats, for the proper tightening position.

  • Page 22: Scheduled Maintenance Procedures

    Service Manual December 2023 Scheduled Maintenance Procedures Machine Configuration: Section 3 Schedul ed Mai ntenance Pr ocedures  Unless otherwise specified, perform each procedure with the machine in the following configuration: • Machine parked on a firm, level surface • Key switch in the off position with the key Observe and Obey: removed Maintenance inspections shall be completed...
  • Page 23 December 2023 Service Manual Scheduled Maintenance Procedures About This Section Maintenance Symbols Legend Note: The following symbols have been used in This section contains detailed procedures for each this manual to help communicate the intent of the scheduled maintenance inspection. instructions.

  • Page 24: Maintenance Schedule

    Service Manual December 2023 Scheduled Maintenance Procedures Maintenance Schedule Programmed Example (under 1000 HRS): The maintenance procedures have been divided into subsections that include: Commissioning, Quarterly, Annually and Programmed maintenance intervals. The maintenance inspection report has been divided into general areas of the machine that include: Drive Chassis, Platform, Mast, Functions and Controls, and Electrical.

  • Page 25: Pre-Delivery Preparation Report

    December 2023 Service Manual Pre-Delivery Preparation Report Fundamentals Instructions It is the responsibility of the owner or dealer to Use the operator’s manual on your machine. perform the Pre-delivery Preparation. The Pre-delivery Preparation consists of The Pre-delivery Preparation is performed prior to completing the Pre-operation Inspection, the each delivery.

  • Page 26: Scheduled And Programmed Maintenance Inspection Report

    Scheduled and Programmed December 2023 Maintenance Inspection Report Model Hour meter Date Serial number Inspector company Machine owner Inspected by (print) Inspector signature Scheduled Maintenance: Legend Make copies of this report to use Programmed Maintenance: Inspection Type for each inspection. Programmed maintenance will be completed based Y = yes, acceptable Q = quarterly or frequent...
  • Page 27 December 2023 Service Manual This page intentionally left blank. Part No. 1307550GT • GRC • QS R • QS ™ ™ ™ ™...

  • Page 28: Commissioning Procedures

    Service Manual December 2023 Commissioning Procedures Perform 50 Hour Service The 50 hour maintenance procedure is a one time sequence of procedures to be performed after the first 50 hours of usage. After this interval, refer to the maintenance inspection report for continued scheduled maintenance.

  • Page 29: Quarterly Maintenance Procedures

    December 2023 Service Manual Quarterly Maintenance Procedures Machines purchased in ASIA, North America and Latin America: Check for Open Bulletins and Owner Registration Go to ASIA, North America and Latin America Bulletins (https://www.gogenielift.com/) Genie specifications require that this procedure be performed quarterly.

  • Page 30: Battery Inspection

    Service Manual December 2023 Quarterly Maintenance Procedures Lower the platform until the mast just contacts the battery cover. Battery Inspection Crushing hazard. Keep hands clear of the battery cover when lowering the platform. Genie specifications require that this procedure be performed quarterly.
  • Page 31 December 2023 Service Manual Quarterly Maintenance Procedures 10 Perform an equalizing charge OR fully charge 14 Install the vent caps and neutralize any the battery(s) and allow the battery(s) to rest electrolyte that may have spilled. at least 6 hours. 15 Check each battery pack and verify that the 11 Remove the battery vent caps and check the batteries are wired correctly.
  • Page 32 Service Manual December 2023 Quarterly Maintenance Procedures 17 Connect the battery charger to a properly grounded 115V/60Hz or, 230V/60Hz or 50Hz single phase AC power sUpply. Result: The charger should operate and begin charging the batteries. If, simultaneously, the charger alarm sounds and the LEDs blink one time, correct the charger connections at the fuse and battery.

  • Page 33: Inspect The Electrical Wiring

    December 2023 Service Manual Quarterly Maintenance Procedures Inspect the Electrical Wiring Inspect the Electrical Contactor Genie specifications require that this procedure be Genie specifications require that this procedure be performed quarterly. performed quarterly. Maintaining electrical wiring in good condition is Maintaining the electrical contactor in good essential to safe operation and good machine condition is essential to safe machine...

  • Page 34: Inspect The Voltage Inverter (If Equipped)

    Service Manual December 2023 Quarterly Maintenance Procedures Connect an appropriate power tool to the inverter. Activate the tool. Inspect the Voltage Inverter (if equipped) Result: The power tool should operate. There may be a brief (0.5 second) delay if the power tool has not been used in the previous 10 minutes.

  • Page 35: Test The Flashing Beacons

    December 2023 Service Manual Quarterly Maintenance Procedures Test the Flashing Beacons Test the Alarm Package (if equipped) Genie specifications require that this procedure be performed quarterly. Genie specifications require that this procedure be performed quarterly. Flashing beacons are used to alert operators and ground personnel of machine proximity and Alarms are used to alert operators and ground motion.

  • Page 36: Inspect The Tires, Wheels And Castle Nut Torque

    Service Manual December 2023 Quarterly Maintenance Procedures Inspect the Tires, Wheels and Check the Lifting Chain Castle Nut Torque Adjustments - GR, QS Models Genie specifications require that this procedure be performed quarterly. Genie specifications require that this procedure be Maintaining proper adjustment of the lifting chains performed quarterly.

  • Page 37: Clean And Lubricate The Columns - Gr, Qs Models

    December 2023 Service Manual Quarterly Maintenance Procedures Q-10 Q-11 Clean and Lubricate the Columns Adjust the Sequencing Cables - - GR, QS Models GR, QS Models Genie specifications require that this procedure be Genie specifications require that this procedure be performed quarterly.

  • Page 38: Visual Inspection Of The Hydraulic Oil

    Service Manual December 2023 Quarterly Maintenance Procedures Q-12 Confirm proper tension of each sequencing cable by measuring the height of the spring Visual Inspection of the Hydraulic between the nylock nut and the upper sequencing bracket. Result: The measurement is within specification.

  • Page 39: Test The Drive Brakes

    December 2023 Service Manual Quarterly Maintenance Procedures Q-13 Collect a sample of hydraulic oil and place in a clear container. Visually inspect the Test the Drive Brakes hydraulic oil for the following: Genie specifications require that this procedure be • Color: oil should be a clear, light-honey performed quarterly.

  • Page 40: Test The Drive Speed - Stowed Position

    Service Manual December 2023 Quarterly Maintenance Procedures Q-14 Q-15 Test the Drive Speed – Stowed Test the Drive Speed - Raised Position Position Genie specifications require that this procedure be performed quarterly. Genie specifications require that this procedure be Proper drive function is essential to safe machine performed quarterly.

  • Page 41: Annual Maintenance Procedures

    December 2023 Service Manual Annual Maintenance Procedures Test the Platform Overload Grease the Platform Overload System - GR, QS Models Mechanism - GR, QS Models Genie specifications require that this procedure be Genie specifications require that this procedure be performed annually OR when the machine fails to performed annually.
  • Page 42 Service Manual December 2023 Annual Maintenance Procedures Using a suitable lifting device, place an Add additional weight to the platform that is appropriate test weight equal to that of the equal to, but does not exceed 15% of the maximum platform capacity at the center of maximum rated load.

  • Page 43: Test The Outdoor Height Limit System

    December 2023 Service Manual Annual Maintenance Procedures Turn the key switch to ground controls. Test the Outdoor Height Limit Result: The LCD at the ground controls System displays SELECT IN/OUT and machine hours. The LED readout on the platform controls displays battery condition. The platform overload system is operating properly Genie specifications require that this procedure be...

  • Page 44: Programmed Maintenance Procedures

    Service Manual December 2023 Programmed Maintenance Procedures P1-1 P0-1 Inspect the Mast Assembly for Grease the Steer Yokes Wear - GR, QS Models Genie specifications require that this procedure be performed every 100 hours of operation. Genie specifications require that this procedure be performed every 1000 hours of operation.

  • Page 45: P1-2 Inspect And Lubricate The Lifting Chains - Gr, Qs Models

    December 2023 Service Manual Programmed Maintenance Procedures P1-2 Raise the platform until approximately 4 inches / 10 cm of each column is visible. Inspect and Lubricate the Lifting Chains - GR, QS Models Visually inspect the top of each column for clearance between the slider block and the adjacent column surface.

  • Page 46: P1-3 Replace The Hydraulic Return Filter

    Service Manual December 2023 Programmed Maintenance Procedures P1-3 P2-1 Replace the Hydraulic Return Test or Replace the Hydraulic Oil Filter Genie requires that this procedure be performed every 2000 hours. Genie specifications require that this procedure be performed every 1000 hours of operation. Replacement or testing of the hydraulic oil is essential for good machine performance and Replacement of the hydraulic tank return filter is...
  • Page 47 December 2023 Service Manual Programmed Maintenance Procedures Install the hydraulic tank and install and Testing the oil: tighten the hydraulic tank retaining fasteners. Complete the hydraulic oil testing with an oil Torque to specification. distributor. Torque specifications If the hydraulic oil passes testing at the 2000 hour maintenance interval, the oil must Hydraulic retaining fasteners, dry 35 in-lbs...

  • Page 48: Repair Procedures

    Service Manual December 2023 Repair Procedures Machine Configuration: Section 4 Repair Pr oc edures  Unless otherwise specified, perform each repair procedure with the machine in the following configuration: • Machine parked on a firm, level surface • Key switch in the off position with the key Observe and Obey: removed ...
  • Page 49 December 2023 Service Manual Repair Procedures About This Section Symbols Legend Safety alert symbol—used to alert Most of the procedures in this section should only personnel to potential personal be performed by trained service professional in a injury hazards. Obey all safety suitably equipped workshop.

  • Page 50: Platform Controls

    Service Manual December 2023 Platform Controls The platform controls are used to operate the machine from the platform. Activating a function button sends a signal to the Electronic Control Module (ECM). When the ECM is in the function mode, the platform controls are used to operate the various machine functions.

  • Page 51: Circuit Board

    December 2023 Service Manual Platform Controls Operational Indicator Codes Circuit Board These codes are generated by the electrical system to indicate machine operating status. During normal operation, a code will appear in the How to Remove the Platform platform controls LED readout if a condition such Controls Circuit Board as off-level, overload cutout, chassis mode operation or pothole guard stuck occurs.

  • Page 52: Joystick

    Service Manual December 2023 Platform Controls Carefully disconnect all wire harness connectors from the platform controls circuit Joystick board. Electrocution/burn hazard. How to Remove the Joystick Contact with electrically charged circuits could result in death or Push in the red Emergency Stop button to the serious injury.

  • Page 53: Platfrom Controls Alarm

    December 2023 Service Manual Platform Controls Platform Controls Alarm Platform Emergency Stop Button How to Remove the Platform How to Remove the Platform Controls Alarm Controls Emergency Stop Button Push in the red Emergency Stop button to the Push in the red Emergency Stop button to the off position at both the ground and platform off position at both the ground and platform controls.
  • Page 54 Service Manual December 2023 Platform Controls Disconnect the white wires from the Emergency Stop base. Electrocution/burn hazard. Contact with electrically charged circuits could result in death or serious injury. Remove all rings, watches and other jewelry. Component damage hazard. Electrostatic discharge (ESD) can damage printed circuit board components.

  • Page 55: Ground Controls

    December 2023 Service Manual Ground Controls The ground controls, used to operate the machine from the ground, can also be used to tune the performance of the machine. The ground controls consist of an Electronic Control Module (ECM), emergency stop button, key switch and circuit breaker.

  • Page 56: Software Revision Level

    Service Manual December 2023 Ground Controls Press the scroll down button twice. Software Revision Level Result: The ground control LCD display will indicate the machine model, software part number How to Determine the Revision and software revision. Level Push in the red Emergency Stop button to the off position at both the ground and platform The machine software revision level is displayed at controls and turn the key switch to the off...

  • Page 57: Machine Setup

    December 2023 Service Manual Ground Controls Press and hold the ground control scroll up and scroll down buttons. Machine Setup How to Setup the Machine from Ground Controls The ground controls can be used to setup the machine parameters from the ground. Features that can be adjusted from the ground controls include machine Model, Options and Speed setup.

  • Page 58: Level Sensors

    Service Manual December 2023 Ground Controls How to Install and Calibrate the Level Sensor Level Sensors Tip-over hazard. Failure to install The Electronic Control Module (ECM) is the level sensor as instructed programmed to deactivate the lift and drive will compromise machine functions and activate an alarm when a signal is stability and cause the machine received from the level sensor.
  • Page 59 December 2023 Service Manual Ground Controls Place the level sensor on to the level sensor Install the level sensor retaining fasteners bracket with the "X" on the level sensor through the level sensor and springs. Secure towards the steer end of the machine. the level sensor assembly to the machine.
  • Page 60 Service Manual December 2023 Ground Controls 10 Pull out the red Emergency Stop button to the 16 Press and hold the Enter button to start on position at the ground controls. calibration. Result: The ground controls LCD display will Result: An audible alarm will sound when show the following: calibration is complete.
  • Page 61 December 2023 Service Manual Ground Controls 19 Drive the steer end of the machine up a ramp 21 Drive the non-steer end of the machine up a until it is just under 3°. ramp until it is just under 3°. Result: No audible alarm is heard.
  • Page 62 Service Manual December 2023 Ground Controls 23 Place a digital level on the steer end of the 26 Drive the hydraulic tank side of the machine drive chassis. Zero out the digital level. onto a ramp until it is just under 1.5°. 24 Drive the ground control side of the machine Result: No audible alarm is heard.

  • Page 63: Hydraulic Pump

    December 2023 Service Manual Hydraulic Pump Activate the platform up function in one second intervals from the ground controls until Function Pump the pressure gauge reaches 3200 psi / 221 bar. The hydraulic pump is attached to the motor which makes up the hydraulic power unit.

  • Page 64: How To Remove The Hydraulic Pump

    Service Manual December 2023 Hydraulic Pump How to Remove the Hydraulic How to R emove the Hydr aulic Pump Pump Note: When removing a hose assembly or fitting, the O-ring (if equipped) on the fitting and/or hose end must be replaced. All connections must be torqued to specification during installation.

  • Page 65: Function Manifold

    December 2023 Service Manual Function Manifold Function Manifold Components The function manifold is mounted next to the hydraulic power unit. Index No. Description Schematic Item Function Torque — Coil nut (items E, F, and H) — — 5 ft-lbs / 7 Nm Diagnostic port Test port —...
  • Page 66 Service Manual December 2023 Function Manifold Note: 'alpha-numeric' callouts refer to corresponding notes on the electrical schematic. • GRC • QS R • QS Part No. 1307550GT ™ ™ ™ ™...

  • Page 67: Valve Adjustments - Function Manifold

    December 2023 Service Manual Function Manifold Chock both sides of the wheels at the steer end of the machine. Valve Adjustments - Function Manifold Remove the platform controls from the platform. Note: Perform this test from the ground with the Turn the key switch to platform controls and platform controls.
  • Page 68 Service Manual December 2023 Function Manifold How to Adjust the Platform Lift Remove the platform controls from the platform. Relief Valve Hold the lift relief valve with a wrench and Note: Verify the system relief is adjusted correctly remove the cap (schematic item before performing this procedure.
  • Page 69 December 2023 Service Manual Function Manifold How to Adjust the Steer Relief Remove the platform controls from the platform. Valve Turn the key switch to platform controls and Note: Perform this test from the ground with the pull out the red Emergency Stop button to the platform controls.

  • Page 70: Valve Coils

    Service Manual December 2023 Function Manifold Valve Coil Resistance Specification Valve Coils Note: The following coil resistance specifications How to Test a Coil are at an ambient temperature of 68°F / 20°C. As valve coil resistance is sensitive to changes in air A properly functioning coil provides an temperature, the coil resistance will typically electromagnetic force which operates the solenoid...
  • Page 71 December 2023 Service Manual Function Manifold How to Test a Coil Diode Note: If testing a single terminal coil, connect the negative lead to the internal metallic ring at either Genie incorporates spike suppressing diodes in all end of the coil. of its coils.

  • Page 72: Brake Release Hand Pump Components

    Service Manual December 2023 Brake Release Hand Pump Components Brake Release Hand Pump Components The brake release hand pump manifold is mounted behind the the hydraulic power unit. Index No. Description Schematic Item Function Torque Hand pump Manual brake release 30 ft-lbs / 41 Nm Needle valve Manual brake release enable...

  • Page 73: Hydraulic Tank

    December 2023 Service Manual Hydraulic Tank Remove the hydraulic tank retaining fasteners and remove the hydraulic tank from the Hydraulic Tank machine. The primary functions of the hydraulic tank are to Remove the hydraulic tank cap and drain the cool and deaerate the hydraulic fluid during tank into a suitable container.

  • Page 74: Non-Steer Axle Components

    Service Manual December 2023 Non-Steer Axle Components Tag, disconnect and plug the hydraulic hose from the brake. Cap the fitting on the brake. Drive Brake Bodily injury hazard. Spraying How to Remove the Drive Brake hydraulic oil can penetrate and burn skin.

  • Page 75: Steer Axle Components

    December 2023 Service Manual Steer Axle Components Tag, disconnect and plug the hydraulic hoses on the drive motor. Cap the fittings on the Yoke and Drive Motor drive motor. How to Remove the Yoke and Bodily injury hazard. Spraying hydraulic oil can penetrate and Drive Motor burn skin.

  • Page 76: Steer Cylinder

    Service Manual December 2023 Steer Axle Components How to Remove a Drive Motor Steer Cylinder Block the non-steer tires. Remove the cotter pin from the wheel castle How to Remove the Steer nut of the motor to be removed. Cylinder Note: Always replace the cotter pin with a new one when removing the castle nut.

  • Page 77: Steer Bellcrank

    December 2023 Service Manual Steer Axle Components Tie Rod How to Remove the Tie Rod Remove the steer cylinder. Refer to Repair Procedure, How to Remove the Steer Cylinder. Center a lifting jack under the drive chassis at the steer end of the machine. Raise the machine approximately 14 inches / 36 cm.

  • Page 78: Platform Components

    Service Manual December 2023 Platform Components Remove the fasteners securing the junction box bracket to the mast. Set the bracket and Platform fasteners to the side. How to Remove the Platform Attach a lifting strap of suitable capacity from an overhead supporting device and center it Perform this procedure with the platform extension around the platform railing.

  • Page 79: Platform Extension Deck (If Equipped)

    December 2023 Service Manual Platform Components Remove the fasteners securing the white slide blocks to the main deck. Set the slide blocks Platform Extension Deck and the fasteners to the side. (if equipped) Activate the foot release latch and slide the extension platform out of the platform.

  • Page 80: How To Remove The Platform Extension Deck, Grc Models

    Service Manual December 2023 Platform Components How to Remove the Platform How to R emove the Pl atform Extensi on Deck, GRC M odels Attach a lifting strap from an overhead supporting device and center it around the Extension Deck, GRC Models extension deck railing.

  • Page 81: Work Tray (If Equipped)

    December 2023 Service Manual Platform Components Work Tray How to Remove the Work Tray (if equipped) Turn the key switch to the off position. Disconnect the battery pack from the machine. Electrocution/burn hazard. Contact with electrically charged circuits could result in death or serious injury.

  • Page 82: Mast Components

    Service Manual December 2023 Mast Components 10-1 Tag, disconnect and plug the lift cylinder hoses at the function manifold. Cap the Mast fittings. How to Remove the Mast How to R emove the M as t Assem bly - GR, QS Models Bodily injury hazard.
  • Page 83 December 2023 Service Manual Mast Components 11 Carefully pull the hydraulic hoses free while removing the mast from the machine. Crushing hazard. The mast assembly could become unbalanced and fall if not properly supported when removed from the machine. Component damage hazard. Hoses and cables can be damaged if they are kinked or pinched.

  • Page 84: How To Disassemble The Mast - Gr, Qs Models

    Service Manual December 2023 Mast Components How to Disassemble the Mast - How to Dis ass embl e the M ast - GR, QS M odels GR, QS Models Bodily injury hazard. This procedure requires specific repair skills, lifting equipment and a suitable workshop.
  • Page 85 December 2023 Service Manual Mast Components Remove the lift cylinder barrel end mounting Slide the carriage toward the top of the mast fasteners. assembly enough to remove the tension on the lifting chains. 10 Slide the column below the carriage toward the top of the mast assembly approximately 6 inches / 15 cm to access the idler wheel mounting fasteners.

  • Page 86: How To Assemble The Mast - Gr, Qs Models

    Service Manual December 2023 Mast Components How to Assemble the Mast - How to Ass embl e the M ast - GR, QS M odels 10 Lay the number 3 column chains on the floor. GR, QS Models Note: Do not allow the chains to become twisted or dirty.

  • Page 87: How To Remove The Mast Assembly - Grc Models

    December 2023 Service Manual Mast Components How to Remove the Mast How to R emove the M as t Assem bly - GRC m odels Tag, disconnect and plug the lift cylinder hose at the function manifold. Cap the fitting. Assembly - GRC Models Bodily injury hazard.
  • Page 88 Service Manual December 2023 Mast Components 12 Carefully pull the cables and hydraulic hoses Remove the fasteners securing the lower rear free while removing the mast from the access cover to the chassis and remove the machine. cover. Set the cover and the fasteners to the side.

  • Page 89: How To Disassemble The Mast - Grc Models

    December 2023 Service Manual Mast Components How to Disassemble the Mast - How to Dis ass embl e the M ast - GRC M odels Using a drill, carefully drill out the rivets securing the number 2 inner wear pads to the GRC Models bottom half of the number 2 mast section, the number 3 inner wear pads to the bottom half...
  • Page 90 Service Manual December 2023 Mast Components 10 Attach a lifting strap from an overhead 13 Using a drill, carefully drill out the rivets supporting device to the mast assembly and securing the number 4 inner wear pads to the carefully rotate the mast 180°. Set the mast bottom half of the number 4 mast section.
  • Page 91 December 2023 Service Manual Mast Components 15 Slide the number 3 mast towards the bottom 17 Using a drill, carefully drill out the rivets of the number 2 mast and align the upper and securing the number 3 inner wear pads to the lower number 3 mast access holes to the bottom half of the number 3 mast section.
  • Page 92 Service Manual December 2023 Mast Components 19 Slide the number 2 mast towards the bottom 21 Using a drill, carefully drill out the rivets of the number 1 mast and align the upper and securing the number 2 inner wear pads to the lower number 2 mast access holes to the bottom half of the number 2 mast section.

  • Page 93: How To Assemble The Mast - Grc Models

    December 2023 Service Manual Mast Components Using the appropriate rivets, install the upper How to Assemble the Mast - How to Ass embl e the M ast - GRC M odels corner wear pads, to the upper half of the GRC Models number 1 mast.
  • Page 94 Service Manual December 2023 Mast Components Attach a lifting strap from an overhead Slide the number 2 mast towards the bottom supporting device to the number 2 mast and of the number 1 mast and align the lower carefully slide the number 2 mast onto the number 2 mast access holes to the lower number 1 mast, with the cylinder mount number 1 rivet holes.
  • Page 95 December 2023 Service Manual Mast Components 11 Using the appropriate rivets, install the upper 12 Attach a lifting strap from an overhead corner wear pads, to the upper half of the supporting device to the number 3 mast and number 2 mast. carefully slide the number 3 mast onto the number 2 mast, with the cylinder mount brackets facing the work table.
  • Page 96 Service Manual December 2023 Mast Components 14 Slide the number 3 mast towards the bottom 18 Using the appropriate rivets, install the upper of the number 2 mast and align the lower corner wear pads, to the upper half of the number 3 mast access holes to the lower number 3 mast.
  • Page 97 December 2023 Service Manual Mast Components 20 Slide the lower, inner corner wear pads 21 Slide the number 4 mast towards the bottom between the number 4 mast and the number of the number 3 mast and align the lower 3 mast.
  • Page 98 Service Manual December 2023 Mast Components 25 Attach a lifting strap from an overhead 28 Carefully collapse the mast assembly. supporting device to the mast assembly and 29 Attach a lifting strap from an overhead carefully rotate the mast 180°. Set the mast supporting device to the lift cylinder.

  • Page 99: Lifting Chains - Gr, Qs Models

    December 2023 Service Manual Mast Components 10-2 Fully lower the platform and confirm the alignment of the columns. Repeat steps Lifting Chains - GR, QS Models 2 through 5 if necessary. Confirm that the chain tensioner bracket is How to Adjust the Lifting Chains centered in the inspection hole.

  • Page 100: How To Inspect The Lifting Chains

    Service Manual December 2023 Mast Components How to Inspect the Lifting Chains How to Ins pect the Lifti ng C hai ns Inspection Procedure Inspection Failure Inspection Remedy Wear Count out 16 chain links and When the length of the Replace both chains on that measure pin to pin 16 links (pin to pin) measure...
  • Page 101 December 2023 Service Manual Mast Components Inspection Procedure Inspection Failure Inspection Remedy Raised or Turned Pins Visually inspect for raised Raised pins. Replace both chains on that pins. column section. Do not repair just the affected portion of the chain. Visually inspect for turned Misalignment of flats on all Replace both chains on that...

  • Page 102: Lift Cylinders

    Service Manual December 2023 Repair Procedures 10-3 Lift Cylinders The lift cylinder is equipped with a normally closed solenoid valve to prevent movement in the event of a hydraulic line failure. How to Remove the Lift Cylinder - How to R emove the Lift Cylinder - GR , QS M odels GR, QS Models Bodily injury hazard.

  • Page 103: How To Remove The Lift Cylinder - Grc Models

    December 2023 Service Manual Repair Procedures How to Remove the Lift Cylinder - How to R emove the Lift Cylinder - GRC Models GRC Models Bodily injury hazard. This procedure requires specific repair skills, lifting equipment and a suitable workshop. Attempting this procedure without these skills and tools could result in death or serious injury and...
  • Page 104 Service Manual December 2023 Repair Procedures Remove the hair pin clips securing the mast cylinder pin to the lower half of the mast assembly. Set the clips to the side. Support the lift cylinder and use a soft metal drift to remove the mast cylinder pin from the lower mast assembly.

  • Page 105: Lift Cylinder Wear Block - Grc Models

    December 2023 Service Manual Repair Procedures 10-4 Separate cylinder number 2 from cylinder number 1 and remove the cylinder wear block Lift Cylinder Wear Block - at the rod end of the cylinders. GRC Models How to Remove the Lift Cylinder Wear Block Bodily injury hazard.

  • Page 106: Wear Pads - Grc Models

    Service Manual December 2023 Repair Procedures 10-5 10-6 Wear Pads - GRC Models Mast Coil Cord - GRC Models Wear pads on the GRC are used to provide a How to Remove the Mast Coil uniform fit between the mast sections, as the mast Cord assembly extends and retracts.

  • Page 107: Mast Control Cable

    December 2023 Service Manual Repair Procedures 10-7 Mast Control Cable - GR, QS Models How to Route the Mast Control Cable Remove the cover from the junction box. Connect the control cable wires. Close the junction box. Route the cable around the lower pulley closest to the junction box, then up to the next pulley.
  • Page 108 Service Manual December 2023 Repair Procedures GR-15, QS-15 1 junction box 2 cable restraint bracket • GRC • QS R • QS Part No. 1307550GT ™ ™ ™ ™...

  • Page 109: Platform Overload Components

    December 2023 Service Manual Platform Overload Components Confirm the setting: 11-1 Platform Overload System - Using a suitable lifting device, lift the additional test weight from the platform. GR, QS Models Pull out the red Emergency Stop button to the How to Calibrate the Platform on position at the ground controls.

  • Page 110: Platform Overload Recovery Message - Gr, Qs Models

    Service Manual December 2023 Platform Overload Components 11-2 Pull out the red Emergency Stop button at the ground controls. Platform Overload Recovery Message - GR, QS Models Result: The ground control LCD display will show the following. If the ground controls LCD screen displays OL: PLATFORM OVERLOADED, the emergency lowering system has been used while the platform was overloaded.
  • Page 111 December 2023 Service Manual Platform Overload Components Press and hold the scroll down button for 5 seconds. Result: The ground control LCD display will show the following. Press the enter button. Result: The ground control LCD display will show the following. Press the buttons in the following sequence: (down)(down)(up)(enter).

  • Page 112: Obstruction Sensing System

    Service Manual December 2023 Obstruction Sensing System How to Replace an Obstruction How to R eplac e an Obstr ucti on Sensing Pad 12-1 Sensing Pad Obstruction Sensing Pads - QSR Models QS-12R: Raise the platform approximately 3 feet / 1 m. The function of the Obstruction Sensing System is QS-15R and QS-20R: Raise the platform to detect a person or an object standing on the...
  • Page 113 December 2023 Service Manual Obstruction Sensing System Using a broad flat metal blade, carefully slide Non-steer End the metal blade under the obstruction pad and work the metal blade under the entire pad to be replaced, until the pad is separated from the chassis or the battery box cover.

  • Page 114: Battery Charger

    Service Manual December 2023 Battery Charger 13-1 Battery Charger The charger contains selectable charging profiles stored in its internal memory to charge batteries. These profiles are specific to each battery type. The charging profile must be programmed to match the specific battery type on the machine. Remote charger status indicators 1 Error / Fault / USB indicator 2 Error / Fault...

  • Page 115: Selecting A Charge Profile

    December 2023 Service Manual Battery Charger Selecting a Charge Profile Sel ecti ng a Charge Profil e Press and hold the charge profile selection button until the error indicator and charging Electrocution/burn hazard. indicator lights turn off and the AC status Contact with electrically charged indicator light turns on to confirm selection circuits could result in death or...

  • Page 116: Batteries

    Service Manual December 2023 Batteries All models: 14-1 How to Remove the Batteries Disconnect the battery pack from the machine. Note: Perform this procedure with the machine on Electrocution/burn hazard. a firm, level surface. Contact with electrically charged circuits could result in death or Models with working batteries: serious injury.

  • Page 117: Diagnostics

    December 2023 Service Manual Diagnostics Section 5 Diagnostics Before Troubleshooting:  Read, understand and obey the safety rules and operating instructions in the appropriate operator's manual on your machine.  Be sure that all necessary tools and test equipment are available and ready for use. Observe and Obey: Read each appropriate fault code thoroughly.
  • Page 118 Service Manual December 2023 Diagnostics Definitions Genie SmartLink Diagnostic ® ™ System GSDS – Genie SmartLink™ Diagnostic System This machine is equipped with the Genie ECM – Electronic Control Module SmartLink™ Diagnostic System (GSDS). The GCON – Ground Controls GSDS indicates a machine malfunction has happened by displaying Operational Indicator PCON –...

  • Page 119: Gcon I/O Map

    December 2023 Service Manual Diagnostics GCON I/O Map J-2 Connector – Black GCON Pin Wire Gauge Digital Circuit Function I/O Type J2-01 Platform Up Coil 18 OR Number and Color Output J1 Connector – Gray Digital J2-02 Platform Down Coil 18 OR/BK Output Power...

  • Page 120: Operation Indicator Codes (Oic)

    Service Manual December 2023 Diagnostics Operational Indicator Codes Diagnostic Trouble Codes (DTC) (OIC) These codes are generated by the system to indicate that a device or circuit malfunction has These codes are generated by the electrical been detected in the electrical system. system to indicate machine operating status.

  • Page 121: Troubleshooting "Hxxx" And "Pxxx" Faults

    December 2023 Service Manual Diagnostics Troubleshooting "HXXX" and "PXXX" Faults The procedure below illustrates typical steps for diagnosing and fixing faults of type "HXXX" and "PXXX". Diagnostic Chart Good 1 Check the faulted device for a short or open circuit. Replace faulted device.

  • Page 122: Fault Inspection Procedure

    Service Manual December 2023 Diagnostics Fault Inspection Procedure Check the device associated with the faulted circuit Disconnect the faulted device connector. Using a multi-meter, measure resistance between the two terminals of the faulted device. Resistance should be as follows. Device Typical Resistance Solenoid Valve, Drive 27.2 Ω...
  • Page 123 December 2023 Service Manual Diagnostics Check the GCON ECM Disconnect the GCON ECM connectors, J1/QD31, J2/QD33 and J3/QD32. For short to B- type faults, measure resistance between pins J1-7/QD31-7 (ground) and the GCON pin associated with the fault code. Refer to the GCON I/O Map in this section to identify the faulted out circuit pin.

  • Page 124: Type "Hxxx" Faults

    Service Manual December 2023 Diagnostics Type "HXXX" Faults Message on Description Possible Causes Failure Mode Number GCON LCD • Short circuit in platform up #1 harness. H001:COILFAULT Short circuit of the platform up #1 circuit to Platform up function H001: •...

  • Page 125: Type "Pxxx" Faults

    December 2023 Service Manual Diagnostics Type "PXXX" Faults Message on Description Possible Causes Failure Mode Number GCON LCD • Short circuit in switched power #1, down limit P001:PWR FAULT Short circuit of the switched power #1 switch, pothole limit switch, digital tilt switch All functions P001: SW PWR1:BAT-...

  • Page 126: Type "Uxxx" Faults

    Service Manual December 2023 Diagnostics Type "UXXX" Faults Message on Description Possible Causes Failure Mode Number GCON LCD • Short circuit of the GCON main function enable U001:SWITCHFAULT Short circuit of the GCON main function All GCON functions U001: switch. GCON MAIN FTN EN enable switch at system startup.
  • Page 127 December 2023 Service Manual Diagnostics Message on Description Possible Causes Failure Mode Number GCON LCD • PCON drive joystick is not in neutral position at PCON drive joystick signal is outside All PCON drive and U033:JSTICKFAULT startup. U033: acceptable calibration range at system steer functions OUT OF CAL RANGE •...

  • Page 128: Type "Fxxx" Faults

    Service Manual December 2023 Diagnostics Type "FXXX" Faults Message on Description Possible Causes Failure Mode Number GCON LCD • Short circuit of the up limit switch circuit. F001:SWITCHFAULT Short circuit of the up limit #1 switch at Platform up function F001: •...

  • Page 129: Type "Cxxx" Faults

    December 2023 Service Manual Diagnostics Type "CXXX" Faults Message on Description Possible Causes Failure Mode Number GCON LCD C001:GCON ECM • Incorrect software file. All functions C001: GCON ECM CRC check error. FAULT TYPE 1 • GCON ECM internal failure. inhibited.
  • Page 130 Service Manual December 2023 Diagnostics Message on Description Possible Causes Failure Mode Number GCON LCD • C053 displayed at GCON, PCON with older software revision connected to GCON with newer C053:PCON-GCON Software revisions do not match between the software revision. All functions C053: SOFTWARE MISMATCH...

  • Page 131: Battery Charger

    December 2023 Service Manual Diagnostics Battery Charger The charger continuously monitors internal and external conditions. Fault and Error codes are generated by the charger to indicate that an internal or external malfunction has been detected in the electrical system. The types of Diagnostic Trouble Codes that may occur are explained below. Type "F"...

  • Page 132: Charger Fault Codes

    Service Manual December 2023 Diagnostics Charger status indicators Remote charger status indicators 1 Error / Fault / USB indicator 2 Charger profile / Error display 3 Error / Fault Char ger Fault C odes Charger Fault Codes Fault Code Description Possible Causes Solution DC-DC failure: LLC excessive leakage...

  • Page 133: Charger Error Codes

    December 2023 Service Manual Diagnostics Charger Error Codes Char ger Error C odes Error Code Description Condition Possible Causes E-0-0-1 High battery voltage Battery voltage too high to charge. Check battery voltage and cable connections. Self clearing when condition has been corrected.
  • Page 134 Service Manual December 2023 Diagnostics Charger Error Codes Error Code Description Condition Possible Causes E-0-0-8 Battery temperature out of range Battery temperature sensor. Check temperature sensor and electrical connections. Rest charger. Disconnect AC power for 30 seconds. Self clearing when condition has been corrected.
  • Page 135 December 2023 Service Manual Diagnostics Charger Error Codes Error Code Description Condition Possible Causes E-0-2-1 High battery voltage detected while Battery voltage too high as Check battery voltage and cable charging detected by charger profile. connections. Confirm charger profile is programmed for correct battery type.
  • Page 136 Service Manual December 2023 Diagnostics Charger Error Codes Error Code Description Condition Possible Causes E-0-2-9 CAN Bus error CAN Bus network error. Check CAN Bus connections. CAN modules not functioning correctly. Termination resistance is ~60 ohms. E-0-3-0 COMM battery module error CAN Bus battery module error.

  • Page 137: Schematics

    December 2023 Service Manual Schematics About This Section Section 6 Schem atics There are two groups of schematics in this section. Electrical Schematics Electrocution/burn hazard. Contact with electrically charged Observe and Obey: circuits could result in death or serious injury. Remove all rings, ...

  • Page 138: Electrical Component And Wire Color Legends

    Service Manual December 2023 Electrical Component and Wire Color Legends Electrical Component Legend Electrical Component Legend, continued Item Description Item Description B1 - B4 Battery, 6V DC C, J, Connector, Plug, Quick disconnect Circuit breaker, 7A QD1 = Battery quick disconnect CON1 Contactor, Motor controller power C8 / QD3 = Control cable to ground...
  • Page 139 December 2023 Service Manual Electrical Component and Wire Color Legends WIRE COLOR LEGEND Color Description Black BK/RD Black/Red Blue BL/BK Blue/Black BL/OR Blue/Orange BL/WH Blue/White Brown Green GR/BK Green/Black GR/WH Green/White GR/YL Green/Yellow Light Blue Orange OR/BK Orange/Black OR/RD Orange/Red OR/WH Orange/White RD/BK...

  • Page 140: Wiring Diagram Ground And Platform Controls

    Service Manual December 2023 Wiring Diagram Ground and Platform Controls GR™ • GRC™ • QS™R • QS™W Part No. 1307550GT...

  • Page 141: Electrical Symbol Legend

    December 2023 Service Manual Electrical Symbol Legend Wire with description or color Limit switch Limit switch N.C.H.O Limit switch N.O.H.C. Circuits crossing no connection Emergency Stop button Motor Solenoid valve with diode Diode Circuit breaker Battery charger Level sensor Circuit connection Fuse 6V or 12V DC battery Deutsch connector...

  • Page 142: Hydraulic Symbols Legend

    Service Manual December 2023 Hydraulic Symbols Legend Orifice with size Hydraulic hand pump Hydraulic cylinder Solenoid operated 2 position 4 way directional valve Check valve Fixed displacement pump Relief valve Solenoid operated 2 position 2 way directional valve, normally closed with manual override Filter Bi-directional motor...

  • Page 143: Electrical Schematics

    December 2023 Service Manual Electrical Schematic, GR • QS (from GRP-60000 to 63822, GRR-10001 to 10384, QSP-6000 to 6050)

  • Page 144: Electrical Schematic, Gr • Qs (From Grp-60000 To 63822, Grr-10001 To 10384, Qsp-6000 To 6050)

    Service Manual December 2023 Electrical Schematic, GR • QS (from GRP-60000 to 63822, GRR-10001 to 10384, QSP-6000 to 6050) PCON 5 DATA LINK- 4 DATA LINK+ 3 PCON E-STOP 2 PCON V- 1 PCON V+ ALARM+ 2 ALARM- 3 J-BOX TILT SENSOR E-STOP+ 4 V+ 1...
  • Page 145 December 2023 Service Manual Electrical Schematic, GR • QS (from GRP-63823, GRR-10385, GRT-1101, QSP-6051) PCON 5 DATA LINK- 4 DATA LINK+ 3 PCON E-STOP 1 PCON V- 2 PCON V+ ALARM+ 2 ALARM- 3 J-BOX TILT SENSOR C9-1 E-STOP+ 4 V+ 1 PCBA MOUNTED SWITCHES GND 2...

  • Page 146: Electrical Schematic, Gr • Qs (From Grp-63823, Grr-10385, Grt-1101, Qsp-6051)

    Service Manual December 2023 Electrical Schematic, GR • QS (from GRP-63823, GRR-10385, GRT-1101, QSP-6051)
  • Page 147 December 2023 Service Manual Electrical Schematic, GRC (from GRCP-6000)

  • Page 148: Electrical Schematic, Grc (From Grcp-6000)

    Service Manual December 2023 Electrical Schematic, GRC (from GRCP-6000) PCON 5 DATA LINK- 4 DATA LINK+ 3 PCON E-STOP 1 PCON V- 2 PCON V+ ALARM+ 2 ALARM- 3 J-BOX TILT SENSOR C9-1 E-STOP+ 4 V+ 1 PCBA MOUNTED SWITCHES GND 2 E-STOP- 5 DATA LINK- 3...

  • Page 149: Electrical Schematic, Gr • Grc • Qs - Options

    December 2023 Service Manual Electrical Schematic, GR • GRC • QS - Options SMARTLINK GCON CHARGER INTERLOCK OPTION (BLACK) J2 PLATFORM UP COIL PLATFORM DOWN COIL STEER LEFT COIL DC MOTOR STEER RIGHT COIL CONTROLLER POWER TO PLATFORM PARALLEL COIL 24V BATTERY DRIVE FORWARD COIL THROTTLE 4...
  • Page 150 Service Manual December 2023 Electrical Schematic, GR • GRC • QS - Options • GRC • QS R • QS Part No. 1307550GT ™ ™ ™ ™...

  • Page 151: Hydraulic Schematics

    December 2023 Service Manual Hydraulic Schematic, GR • QS, (from GRP-60000, GRR-10001, GRT-1101, QSP-6000) Part No. 1307550GT • GRC • QS R • QS ™ ™ ™ ™...

  • Page 152: Hydraulic Schematic, Gr • Qs, (From Grp-60000, Grr-10001, Grt-1101, Qsp-6000)

    Service Manual December 2023 Hydraulic Schematic, GR • QS, (from GRP-60000, GRR-10001, GRT-1101, QSP-6000) LEFT RIGHT BRAKE BRAKE LIFT CYLINDER CYLINDER MANIFOLD MANUAL RELEASE HAND PUMP LEFT RIGHT DRIVE MOTOR DRIVE MOTOR STEER STEER LEFT RIGHT MANUAL RELEASE FORWARD REVERSE L (LIFT) V (VENT) S1 (STEER 1)

  • Page 153: Hydraulic Schematic Grc, (From Grcp-6000)

    December 2023 Service Manual Hydraulic Schematic, GRC (from GRCP-6000) LEFT RIGHT BRAKE BRAKE LIFT CYLINDER CYLINDER MANIFOLD MANUAL RELEASE HAND PUMP LEFT RIGHT DRIVE MOTOR DRIVE MOTOR STEER STEER LEFT RIGHT 0.059 inch MANUAL 1,5 mm RELEASE FORWARD REVERSE L (LIFT) V (VENT) S1 (STEER 1) S2 (STEER 2)
  • Page 154 Service Manual December 2023 Hydraulic Schematic, GRC (from GRCP-6000) GR™ • GRC™ • QS™R • QS™W Part No. 1307550GT Servic e M anual Decem ber 2023...

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