Jlg M4069 Service Manual User Manual

Service & Maintenance ManualModels3369LE4069LEM3369M4069S/N-0200230092 to Present3121639June 10, 2014

vi – JLG Lift – 3121639TABLE OF CONTENTS 6-1. Voltage Measurement (DC). . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 5 - JLG CONTROL SYSTEM5-8 – JLG Lift– 31216392-5 250 FUNCTION PREVENTED251 ELEV ANGLE SESOR FAULTY - VOLTAGE OUT OF RANGEThe sensor signal inp

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-94-4 440 BATTERY SUPPLY441 BATTERY VOLTAGE TOO LOW - SYSTEM SHUTDOWNRecharge batteries or check f

SECTION 5 - JLG CONTROL SYSTEM5-10 – JLG Lift– 3121639Table 5-2. Power Module Diagnostic LED Flash CodesFlash Code FaultConstant Illumination No Fault

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-11(Press Escape Twice to Return to Help)**(Test in Ground Mode)***(Test in Platform Mode)*(Outrig

SECTION 5 - JLG CONTROL SYSTEM5-12 – JLG Lift– 3121639BY PRESSING THESE ARROW KEYS ( ) YOU CAN SCROLL THROUGH THE TOP LEVEL MENUS. - To

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-13- Top Level Menu- Sub Level Menu- Item to be Viewed or ChangedBY PRESSING THESE ARROW KEYS (

SECTION 5 - JLG CONTROL SYSTEM5-14 – JLG Lift– 3121639NOTE: These settings may change in order to achieve opti-mal performance on a machine by machine

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-15NOTE: When configuring an LE scissors machine, themachine configuration must be completed befor

SECTION 5 - JLG CONTROL SYSTEM5-16 – JLG Lift– 31216395.4 GROUND CONTROL CIRCUIT BOARDSoftware Version P1.X Table 5-5. J1 ConnectorPIN TAGNAME FUNCTI

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-17Table 5-6. J2 ConnectorPIN TAGNAME FUNCTION TYPE1 B+ Control System Supply (+48V) POWER INPUT2

3121639 – JLG Lift – vii TABLE OF CONTENTSLIST OF TABLESTABLE NO. TITLE PAGE NO.1-1 Operating Specifications . . . . . . . . . . . . . .

SECTION 5 - JLG CONTROL SYSTEM5-18 – JLG Lift– 312163938 4AWR 4 Wheel Assist Reverse Solenoid Valve DIGITAL OUTPUT39 OSAX Oscillating Axle Solenoid Va

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-19Table 5-8. J4 ConnectorPIN TAGNAME FUNCTION TYPE1 12V 12V Sensor Supply POWER OUTPUT2 TILTX X-A

SECTION 5 - JLG CONTROL SYSTEM5-20 – JLG Lift– 3121639NOTES:

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-1SECTION 6. GENERAL ELECTRICAL INFORMATION & SCHEMATICS6.1 GENE

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-2 – JLG Lift – 3121639 Voltage Measurement Resistance MeasurementFigure 6-1. Voltage M

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-3 Continuity Measurement Current MeasurementFigure 6-3. Continuity

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-4 – JLG Lift – 3121639Continuity Measurement Over Long DistancesWhen trying to determine

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-56.3 APPLYING SILICONE DIELECTRIC COMPOUND TO AMP CONNECTORSSilicone

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-6 – JLG Lift – 3121639AssemblyCheck to be sure the wedge lock is in the open, or as-shipp

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-7Figure 6-8. Connector Assembly (3 of 4)Figure 6-9. Connector Asse

viii – JLG Lift – 3121639TABLE OF CONTENTS NOTES:

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-8 – JLG Lift – 3121639Disassembly1. Insert a 4.8 mm (3/16”) wide screwdriver bladebetween

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-9Service - Voltage ReadingDO NOT PIERCE WIRE INSULATION TO TAKE VOLT

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-10 – JLG Lift – 31216396.4 WORKING WITH DEUTSCH CONNECTORSDT/DTP Series AssemblyFigure 6-

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-11HD30/HDP20 Series DisassemblyFigure 6-16. HD/HDP Contact Removal1

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-12 – JLG Lift – 3121639F2PUMP/MOTORDRIVECONTROLLERLEFTDRIVEMOTORMAINVALVEPLATFORMCONSOLEB

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-13OSCILLATINGAXLECYLINDERSPROXIMITY SENSORSWITCH (USA BUILTMACHINES

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-14 – JLG Lift – 3121639GROUNDCONTROLBOXTOGENERATORMODULE(M3369 & M4069)BEACONLIGHTVAL

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-15DRIVECONTROLLERCIRCUITBREAKERRECEPTACLEAT PLATFORMDRIVECONTACTORPL

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-16 – JLG Lift – 3121639Figure 6-22. Electrical Schematic (All except AUS) - Sheet 1 of 2

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-17Figure 6-23. Electrical Schematic (All except AUS) - Sheet 1 of 2

SECTION 1 - SPECIFICATIONS3121639 – JLG Lift – 1-1SECTION 1. SPECIFICATIONS1.1 SPECIFICATIONSTable 1-1. Operating SpecificationsDescription 3369LE/M3

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-18 – JLG Lift – 3121639Figure 6-24. Electrical Schematic - Kubota (T4F) - Generator Only

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-19Figure 6-25. Electrical Schematic - Kubota (T4F) - Generator Only

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-20 – JLG Lift – 3121639Figure 6-26. Electrical Schematic (AUS)

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-21Figure 6-27. Electrical Schematic (AUS)

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-22 – JLG Lift – 3121639Figure 6-28. Hydraulic Schematic

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS3121639 – JLG Lift – 6-23Figure 6-29. Hydraulic Schematic

SECTION 6 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS6-24 – JLG Lift – 3121639NOTES:

Corporate OfficeJLG Industries, Inc.1 JLG DriveMcConnellsburg PA. 17233-9533USA (717) 485-5161 (717) 485-6417JLG Worldwide LocationsJLG Industries (

SECTION 1 - SPECIFICATIONS1-2 – JLG Lift – 3121639NOTE: If function speeds are slow on a fully charged machine a clogged hydraulic filter may be indic

SECTION 1 - SPECIFICATIONS3121639 – JLG Lift – 1-3TiresEngine (Generator)Table 1-3. Tire SpecificationsSize 240/55 D17.5 R4 Tread(Fill tire with high

SECTION 1 - SPECIFICATIONS1-4 – JLG Lift – 31216391.3 CAPACITIES1.4 PRESSURE SETTINGS1.5 TORQUE SPECIFICATIONSNOTE: When maintenance becomes necessary

SECTION 1 - SPECIFICATIONS3121639 – JLG Lift – 1-51.9 LUBRICATION NOTE: Hydraulic oils must have anti-wear qualities at leastto API Service Classifica

SECTION 1 - SPECIFICATIONS1-6 – JLG Lift – 3121639 TO AVOID PERSONAL INJURY, USE SAFETY PROP FOR ALLMAINTENANCE REQUIRING PLATFORM TO BE ELEVATEDNOTE

SECTION 1 - SPECIFICATIONS3121639 – JLG Lift – 1-71.10 SERIAL NUMBER LOCATIONSFor machine identification, a serial number plate is affixed to the left

SECTION 1 - SPECIFICATIONS1-8 – JLG Lift – 31216391.11 TORQUE CHARTSFigure 1-3. Torque Chart - Sheet 1 of 5 - (SAE Fasteners)

SECTION 1 - SPECIFICATIONS3121639 – JLG Lift – 1-9Figure 1-4. Torque Chart - Sheet 2 of 5 - (SAE Fasteners)

SECTION 1 - SPECIFICATIONS1-10 – JLG Lift – 3121639Figure 1-5. Torque Chart - Sheet 3 of 5 - (SAE Fasteners)

SECTION 1 - SPECIFICATIONS3121639 – JLG Lift – 1-11Figure 1-6. Torque Chart - Sheet 4 of 5 - (METRIC Fasteners)

SECTION 1 - SPECIFICATIONS1-12 – JLG Lift – 3121639Figure 1-7. Torque Chart - Sheet 5 of 5 - (METRIC Fasteners)

SECTION 2 - GENERAL3121639 – JLG Lift – 2-1SECTION 2. GENERAL2.1 MACHINE PREPARATION, INSPECTION, AND MAINTENANCEGeneralThis section provides the nec

SECTION 2 - GENERAL2-2 – JLG Lift– 31216392.2 SERVICE AND GUIDELINESGeneralThe following information is provided to assist you in theuse and applicati

SECTION 2 - GENERAL3121639 – JLG Lift – 2-3Component Disassembly and ReassemblyWhen disassembling or reassembling a component, com-plete the procedura

SECTION 2 - GENERAL2-4 – JLG Lift– 31216392.3 LUBRICATION AND INFORMATIONHydraulic System1. The primary enemy of a hydraulic system is contam-ination.

SECTION 2 - GENERAL3121639 – JLG Lift – 2-52.4 CYLINDER DRIFT TESTMaximum acceptable cylinder drift is to be measuredusing the following methods.Platf

INTRODUCTION - MAINTENANCE SAFETY PRECAUTIONS3121639 – JLG Lift – aINTRODUCTION - MAINTENANCE SAFETY PRECAUTIONSAGENERALThis section contains the gene

SECTION 2 - GENERAL2-6 – JLG Lift– 31216392.6 PREVENTIVE MAINTENANCE AND INSPECTION SCHEDULEThe preventive maintenance and inspection checks arelisted

SECTION 2 - GENERAL3121639 – JLG Lift – 2-7NOTE: (1) If function speeds are slow on a fully charged machine a clogged filter may be indicated. Change

SECTION 2 - GENERAL2-8 – JLG Lift– 3121639NOTES:

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-1SECTION 3. CHASSIS & SCISSOR ARMS3.1 CALIBRATIONSElevation Sensor CalibrationUsing

SECTION 3 - CHASSIS & SCISSOR ARMS3-2 – JLG Lift – 3121639 Some possible reasons that the tilt sensor will not cali-brate are:a. The surface the m

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-33.2 TILT SENSORTilt Sensor, JLG P/N 4000021:NOTE: Refer to Figure 3-4., Tilt Sensor Remo

SECTION 3 - CHASSIS & SCISSOR ARMS3-4 – JLG Lift – 31216393.3 BATTERY MAINTENANCE AND CHARGINGIF REPLACING A BATTERY, EACH NEW BATTERY MUST WEIGHA

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-52. To charge the batteries, connect the charger to a230 volt source with a 15 amp minimu

SECTION 3 - CHASSIS & SCISSOR ARMS3-6 – JLG Lift – 3121639Battery Charger MaintenanceUSE CHARGER ONLY ON BATTERY SYSTEMS WITH AN ALGO-RITHM SELECT

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-7Battery Charger TroubleshootingNo Lights at allNo lights at all indicate that AC power t

INTRODUCTION - MAINTENANCE SAFETY PRECAUTIONSb – JLG Lift – 3121639REVISION LOGOriginal Issue . . . . . . . . . . . . . . . . . .June 10, 2014

SECTION 3 - CHASSIS & SCISSOR ARMS3-8 – JLG Lift – 3121639[5 Flashes] - Over TemperatureThis fault indicates the charger has become too hot during

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-9Checking - Changing the Battery Charger Algo-rithmThe charger is pre-loaded with program

SECTION 3 - CHASSIS & SCISSOR ARMS3-10 – JLG Lift – 3121639Removing the Battery BoxTo remove the battery box, perform the following steps.1. Pull

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-113.4 GENERATORNOTE: Throughout the Generator section, the abbreviationsRBS and CTS are u

SECTION 3 - CHASSIS & SCISSOR ARMS3-12 – JLG Lift – 3121639Figure 3-9. Generator Components

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-13Timing SequencesNOTE: Throughout the Generator section, the abbreviationsRBS and CTS ar

SECTION 3 - CHASSIS & SCISSOR ARMS3-14 – JLG Lift – 3121639 Figure 3-10. Generator System Analyzer Flow Chart

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-15To Connect the JLG Control System Analyzer to the Generator The JLG Control System Ana

SECTION 3 - CHASSIS & SCISSOR ARMS3-16 – JLG Lift – 3121639• OvercrankIf the engine fails to start after a set number of startattempts, the RBS wi

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-173.5 SUPPLEMENTARY FUSE FOR APUThe purpose of this section is to describe the procedure

3121639 – JLG Lift – i TABLE OF CONTENTSTABLE OF CONTENTSSUBJECT - SECTION, PARAGRAPH PAGE NO.SECTION - INTRODUCTION - MAINTENANCE SAFE

SECTION 3 - CHASSIS & SCISSOR ARMS3-18 – JLG Lift – 31216394. Cut and remove the Wire Ties holding the Harnesslabel to the harness. Next, remove t

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-193.6 JOYSTICK CONTROLLERFigure 3-11. Joystick Controller - (JLG P/N 1600403)Table 3-8.

SECTION 3 - CHASSIS & SCISSOR ARMS3-20 – JLG Lift – 3121639Figure 3-12. Drive Components

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-21Power Controller 3.7 TOWINGDisengaging for TowingPRIOR TO OPERATING THE DISCONNECT THE

SECTION 3 - CHASSIS & SCISSOR ARMS3-22 – JLG Lift – 31216393. Rotate the cover to show the inside diameter.4. Press the cover sufficiently against

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-23Figure 3-14. Torque Hub

SECTION 3 - CHASSIS & SCISSOR ARMS3-24 – JLG Lift – 31216393.8 DRIVE HUB The final drive consists of two stages with an integrateddisconnect mecha

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-251. Retaining Screws2. Washers3. Pressure Plate4. Case Seal5. O-ring6. Back-up Ring7. Pi

SECTION 3 - CHASSIS & SCISSOR ARMS3-26 – JLG Lift – 31216393.9 DRIVE BRAKE - MICODisassembly1. After removing the brake from its installation, pla

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-273.10 TORQUE HUB 1. Spindle2. Lip Seal3. Tapered Bearing Cone4. Tapered Bearing Cup5. Ta

ii – JLG Lift – 3121639TABLE OF CONTENTS Changing Hydraulic Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3 - CHASSIS & SCISSOR ARMS3-28 – JLG Lift – 3121639Roll TestThe purpose of the roll test is to determine if the unit’sgears are rotating f

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-29Main Disassembly 1. Coupling2. Retaining Ring3. Ring Gear4. Cover Subassembly5. Washer

SECTION 3 - CHASSIS & SCISSOR ARMS3-30 – JLG Lift – 3121639Disassembly Instructions:1. Perform the Roll Check and Leak Check, if applica-ble prior

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-31Output Carrier Disassembly 1. Using a 1/8" diameter punch, drive the Roll Pin (1)i

SECTION 3 - CHASSIS & SCISSOR ARMS3-32 – JLG Lift – 3121639Input Carrier Disassembly 1. Using a 1/8" diameter punch, drive the Roll Pin (1)in

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-33Hub-Spindle Disassembly 1. Place unit on bench with Spindle (1) end down.2. Remove Reta

SECTION 3 - CHASSIS & SCISSOR ARMS3-34 – JLG Lift – 3121639Cover Disassembly 1. Remove O-ring (1) from the groove in the Cover (2).2. Remove the T

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-35Input Carrier Sub-Assembly 1. Apply a liberal coat of grease to the bore of oneInput Pl

SECTION 3 - CHASSIS & SCISSOR ARMS3-36 – JLG Lift – 3121639Output Carrier Sub-Assembly 1. Apply a liberal coat of grease to the bore of one Out-pu

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-37Hub-Spindle Sub-Assembly NOTE: Apply a light coat of oil on all component parts dur-in

3121639 – JLG Lift – iii TABLE OF CONTENTSCover Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3 - CHASSIS & SCISSOR ARMS3-38 – JLG Lift – 3121639Cover Sub-Assembly 1. Grease O-Ring (7) and insert groove in Cover (2).2. Assemble Dis

SECTION 3 - CHASSIS & SCISSOR ARMS3121639 – JLG Lift – 3-39Main Assembly1. Coupling2. Retaining Ring3. Ring Gear4. Cover Subassembly5. Washer6. Fi

SECTION 3 - CHASSIS & SCISSOR ARMS3-40 – JLG Lift – 3121639NOTE: All components should receive a generous amountof lubricant oil as they are being

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-1SECTION 4. HYDRAULICS4.1 SERVICING AND MAINTENANCE GUIDELINESGeneralThe following information is provid

SECTION 4 - HYDRAULICS4-2 – JLG Lift – 31216392. Unless specific torque requirements are given withinthe text, standard torque values should be used o

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-3basis. However, filter elements must be changedafter the first 50 hours of operation and every 250hours

SECTION 4 - HYDRAULICS4-4 – JLG Lift – 31216394.7 MOTOR CONTROLLER - MODES OF OPERATIONTraction Motor (Drive)Drive in either forward or reverse will s

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-57. If extend port leakage is less than 6-8 drops per min-ute, carefully reconnect hose to extend port, t

SECTION 4 - HYDRAULICS4-6 – JLG Lift – 3121639Lift Cylinder Installation1. Install lift cylinder in place using a suitable slings,aligning barrel end

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-77. With the barrel clamped securely, apply pressure tothe rod pulling device and carefully withdraw thec

iv – JLG Lift – 3121639TABLE OF CONTENTS 4.15 Pressure Setting Procedures . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4 - HYDRAULICS4-8 – JLG Lift – 31216391. Using a special tool, pictured in the following illustra-tion, install a new rod seal into the applic

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-910. Install the bolts into the bushing using Loctite #242.Refer to Cylinder Component Torque Specificati

SECTION 4 - HYDRAULICS4-10 – JLG Lift – 312163921. Position the cylinder barrel in a suitable holding fix-ture.EXTREME CARE SHOULD BE TAKEN WHEN INSTA

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-11Oscillating Axle Lockout Test (If Equipped)LOCKOUT SYSTEM TEST MUST BE PERFORMED QUARTERLY,ANY TIME A S

SECTION 4 - HYDRAULICS4-12 – JLG Lift – 31216394.14 CYLINDER ASSEMBLIES NOTE: Torque Locknut (4) to 1125 - 1375 ft lbs (1525.3 -1864 Nm).• Approximate

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-13NOTE: Torque Locknut (4) to 1125 - 1375 ft lbs (1525.3 -1864 Nm).• Approximate cylinder dry weight = 22

SECTION 4 - HYDRAULICS4-14 – JLG Lift – 3121639NOTE: Torque Locknut (8) to 400 ft lbs (542.3 Nm).Torque Counter Balance Valve (20) and Check Valve(21)

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-15 123456789101112Figure 4-16. Steer Cylinder1. Barrel2. Rod3. Guide4. Locknut5. Piston6. Piston Seal7.

SECTION 4 - HYDRAULICS4-16 – JLG Lift – 312163912678943451. Barrel2. Rod3. Wiper4. Wear Ring5. Rod Seal6. Plug7. Piston Pilot8. Check Valve9. Bleeder

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-174.15 PRESSURE SETTING PROCEDURESMain Relief at Pump1. Install pressure gauge at port “MP” on control va

3121639 – JLG Lift – v TABLE OF CONTENTSLIST OF FIGURESFIGURE NO. TITLE PAGE NO.1-1. Lubrication Chart . . . . . . . . . . . . . . . . .

SECTION 4 - HYDRAULICS4-18 – JLG Lift – 3121639 4.16 DRIVE TORQUE HUBDisassembly1. Loosen all cover bolts and drain oil from unit.2. Remove the cover

SECTION 4 - HYDRAULICS3121639 – JLG Lift – 4-19Assembly1. With the hub shaft sub-assembly resting on the shaftinstall internal gear. The spline of the

SECTION 4 - HYDRAULICS4-20 – JLG Lift – 31216394.17 DRIVE ASSIST VALVE 1L 2L 1R2RMPLPLPRMPRT1 TVALVE SCHEMATICPRTPL2RMPL1RT11LMPR2LFigure 4-19. Drive

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-1SECTION 5. JLG CONTROL SYSTEM5.1 HAND HELD ANALYZER To Connect the Hand Held Analyzer: 1. Conne

SECTION 5 - JLG CONTROL SYSTEM5-2 – JLG Lift– 3121639Using the Analyzer:With the machine power on and the analyzer connectedproperly, the analyzer wil

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-3while in access level 2. Remember, you may always can-cel a selected menu item by pressing the E

SECTION 5 - JLG CONTROL SYSTEM5-4 – JLG Lift– 3121639Adjusting Parameters Using the Hand Held AnalyzerOnce you have gained access to level 1, and a pe

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-5NOTE: Refer to Table 5-3, Machine Model Adjustment, andTable 5-4, Machine Configuration Programm

SECTION 5 - JLG CONTROL SYSTEM5-6 – JLG Lift– 31216395.3 FLASH CODES/DTC’S AND DESCRIPTIONSNOTE: Machines with software prior to P1.0 will display the

SECTION 5 - JLG CONTROL SYSTEM3121639 – JLG Lift – 5-72-1 210 POWER UP211 POWER CYCLEA new system power up has occurred since the last help message.21