Service Manual Owner's manual
Table Of Contents
- Section 1. Specifications
- Section 2. General
- Section 3. Chassis & Turntable
- 3.1 Tires & Wheels
- 3.2 Wheel Drive Assembly, 2WD
- 3.3 Drive Motor - 2WD (Prior to S/N 83331)
- 3.4 Drive Motor (S/N 83331 to Present)
- 3.5 Torque Hub
- 3.6 Wheel Drive Assembly, 4WD
- 3.7 Torque Hub (4WD Machines W/ Integral Brake)
- Roll, Leak and Brake Testing
- Tightening and Torquing Bolts
- Main Disassembly
- Input Carrier Disassembly
- Output Carrier Disassembly
- Housing-Spindle Disassembly
- Spindle-Brake Disassembly
- Input Carrier Sub-Assembly
- Output Carrier Sub-Assembly
- Spindle-Brake Sub-Assembly
- Housing-Spindle Sub-Assembly
- DW2B Integral Brake Check
- Main Assembly
- 3.8 Drive Brake, 2WD - Mico (Prior to S/N 83331)
- 3.9 Re-Aligning torque hub input coupling
- 3.10 Oscillating Axle Bleeding Procedure and Lockout Test
- 3.11 Swing Drive Hub
- 3.12 Swing Brake - Mico (Prior to S/N 66417)
- 3.13 Swing Motor (Prior to S/N 66417)
- 3.14 Swing Motor (S/N 66417 to Present)
- 3.15 Procedure For Setting Gear Backlash
- 3.16 Swing Bearing
- 3.17 Rotary Coupling
- 3.18 Generator
- 3.19 Ford EFI Engine
- 3.20 Deutz EMR 2 (S/N 85332 to Present)
- 3.21 GM Engine General Maintenance
- 3.22 GM Engine Dual Fuel System
- Fuel Filter
- Electric Lock Off
- EPR Assembly
- Low Pressure Regulator (LPR)
- Air Fuel Mixer
- Electronic Throttle Control (ETC)
- Engine Control Module
- Heated Exhaust Gas Oxygen Sensor
- Gasoline Multi Point Fuel Injection System (MPFI)
- Gasoline Fuel Pump
- Gasoline Pressure And Temperature Sensor Manifold
- Fuel Filter
- Fuel Injector Rail
- Fuel Injector
- 3.23 GM Engine Fuel System Repair
- Propane Fuel System Pressure Relief
- Propane Fuel System Leak Test
- Propane Fuel Filter Replacement
- Electronic Pressure Regulator (EPR) Assembly Replacement
- Temperature Manifold Absolute Pressure (TMAP) Sensor
- Electronic Throttle Control Replacement
- Mixer Replacement
- Coolant Hose Replacement
- Vapor Hose Replacement
- Engine Control Module Replacement
- Heated Exhaust Gas Oxygen Sensor Replacement
- 3.24 GM Engine LPG Fuel System Diagnosis
- Section 4. Boom & Platform
- Section 5. Hydraulics
- Section 6. JLG Control System
- Section 7. Basic Electrical information & schematics
SECTION 3 - CHASSIS & TURNTABLE
3121139 – JLG Lift – 3-17
23. Turn housing over and remove the swashplate (39)
by lifting on the end opposite the servo lever.
24. Remove the servo piston (40). Remove the piston
seal (41) and O-ring (42) from the servo piston. Dis-
card the seal and O-ring.
25. Remove the journal bearings (43) from the housing.
If the bearings are to be reused, note the location
and orientation of each bearing for reassembly.
26. Remove pistons (44) and slipper retainer (45) from
the cylinder block (46).
The pistons are not selectively fitted, however units
with high hourly usage may develop wear patterns.
Number the pistons and bores for reassembly if they
are to be reused.
27. Remove the ball guide (47), hold-down pins (48),
and retaining ring (49) from the cylinder block.
NOTE: Most repairs do not require block spring removal.
Perform this procedure only if you suspect problems
with the block spring.
RISK OF PERSONAL INJURY: COMPRESSING THE BLOCK SPRING
REQUIRES FORCE OF ABOUT 80 TO 90 LBF (350 TO 400 N). USE
A PRESS SUFFICIENT TO MAINTAIN THIS FORCE WITH REASON-
ABLE EFFORT. ENSURE THE SPRING IS SECURE BEFORE
ATTEMPTING TO REMOVE THE SPIRAL RETAINING RING.
RELEASE THE PRESSURE SLOWLY AFTER THE RETAINING RING
IS REMOVED.
41
42
40
Lift here
39
43
39. Swashplate
40. Servo Piston
41. Piston Seal
42. O-ring
43. Journal Bearings
Figure 3-13. Swash Plate & Servo Piston
51
50
52
53
46
49
48
47
45
44
44. Piston
45. Slipper Retainer
46. Cylinder Block
47. Ball Guide
48. Holddown Pins
49. Retaining Ring
50. Block Spring Washer
51. Spiral Retaining Ring
52. Block Spring
53. Inner Block Spring Washer
Figure 3-14. Cylinder Kit Disassembly