Service Manual Instruction Manual
Table Of Contents
- Section A. Introduction - Maintenance Safety Precautions
- Section 1. Specifications
- Section 2. General
- Section 3. Chassis & Turntable
- 3.1 Tires And Wheels
- 3.2 Torque Hub
- Oil Information
- Roll and Leak Testing
- Tightening and Torquing Bolts
- Main Disassembly
- Output Carrier Disassembly
- Input Carrier Disassembly
- Hub-Spindle Disassembly
- Spindle-Brake Disassembly
- Cover Disassembly
- Cover Assembly
- Input Carrier Sub-Assembly
- Output Planet Gear Sub-Assembly
- Spindle - Brake Sub-Assembly
- Hub-Spindle Sub-Assembly
- Cover Sub-Assembly
- Main Assembly
- Integral Brake Check
- 3.3 Free Wheeling Option
- 3.4 Drive Motor
- 3.5 Oscillating Axle Bleeding Procedure and Lockout Test
- 3.6 Steer Adjustments
- 3.7 Swing Drive
- 3.8 Swing Bearing
- 3.9 Swing Brake - Mico
- 3.10 Rotary Coupling
- 3.11 Generator
- 3.12 Deutz D2.9 L4 Engine
- 3.13 Deutz D2011 Engine
- 3.14 Spark Arrester Cleaning Instructions
- 3.15 Glow Plugs
- 3.16 Deutz EMR 2
- 3.17 Bio Fuel in Deutz Engines
- 3.18 GM Engine General Maintenance
- 3.19 GM Engine Dual Fuel System
- Fuel Filter
- Direct Electronic Pressure Regulator (DEPR)
- Air Fuel Mixer
- Electronic Throttle Control (ETC)
- Electric Lock Off
- Engine Control Module (ECM)
- 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
- 3.20 GM Engine Fuel System Repair
- Propane Fuel System Pressure Relief
- Propane Fuel System Leak Test
- Propane Fuel Filter Replacement
- Direct Electronic Pressure Regulator (DEPR) Maintenance And Inspection
- Check/Drain Oil Build-Up In 2-Stage Vaporizer
- Air Fuel Mixer/Throttle Control Device Maintenance And Inspection
- Exhaust System And Catalytic Converter Inspection And Maintenance
- Temperature Manifold Absolute Pressure (TMAP) Sensor
- Throttle Body (ETC) Replacement
- Mixer Replacement
- Electronic Pressure Regulator (EPR) Replacement
- Regulator Replacement
- Coolant Hose Replacement
- Vapor Hose Replacement
- Engine Control Module Replacement
- Heated Exhaust Gas Oxygen Sensor Replacement
- 3.21 GM Engine LPG Fuel System Diagnosis
- Section 4. Boom & Platform
- Section 5. Hydraulics
- 5.1 O-Ring Lubrication
- 5.2 Cylinders - Theory of Operation
- 5.3 Cylinder Checking Procedure
- 5.4 Cylinder Removal and Installation
- Cylinder Locations
- Main Boom Telescope Cylinder Removal
- Main Boom Telescope Cylinder Installation
- Main Boom Lift Cylinder Removal
- Main Boom Lift Cylinder Installation
- Upright Level Cylinder Removal
- Upright Level Cylinder Installation
- Tower Boom Lift Cylinder Removal
- Tower Lift Cylinder Installation
- Tower Telescope Cylinder Removal
- Tower Telescope Cylinder Installation
- 5.5 Hydraulic Cylinder repair
- Tower Boom Lift Cylinder
- Cleaning and Inspection
- Assembly
- Upright Level Cylinder
- Cleaning and Inspection
- Assembly
- Master Cylinder
- Cleaning and Inspection
- Assembly
- Main Boom Lift Cylinder
- Cleaning and Inspection
- Assembly
- Main Boom Telescope Cylinder
- Cleaning and Inspection
- Assembly
- Tower Boom Telescope Cylinder
- Cleaning and Inspection
- Assembly
- Platform Level (Slave) Cylinder
- Cleaning and Inspection
- Assembly
- Jib Lift Cylinder (AJ Only)
- Cleaning and Inspection
- Assembly
- Steer Cylinder
- Cleaning and Inspection
- Assembly
- Axle Lockout Cylinder
- 5.6 Hydraulic Pump (Gear)
- 5.7 Variable Pump
- 5.8 Hydraulic Component Start-Up
- 5.9 Pressure Setting Procedures
- Section 6. JLG Control System
- Section 7. Basic Electrical Information & Schematics
SECTION 5 - HYDRAULICS
5-68 – JLG Lift – 3121616
1. Position pump with shaft facing up.
NOTE: If unit is positioned horizontally when shaft is removed, cyl-
inder block could move out of place, making shaft installa-
tion difficult.
2. Remove retaining ring from housing.
3. Pull out seal carrier assembly.
4. Remove O-ring from seal carrier. To install a new shaft
only, go to step 8.
5. Place seal carrier in an arbor press with shaft bearing
side down and press out old seal. An appropriately sized
pipe spacer or socket wrench can be used as a press
tool. Seal is not reusable.
6. Inspect seal carrier and new seal for damage. Inspect
sealing area on shaft for rust, wear, or contamination.
Polish sealing area on shaft if necessary.
7. Press new seal in shaft bearing side of seal carrier. Seal
lip must face outside of pump. Do not damage seal. Out-
side diameter of seal may be coated with a sealant (e.g.
Loctite High Performance Sealant #59231) before instal-
lation. This helps prevent leaks caused by damage to
seal bore in seal carrier. If shaft is not being replaced go
to step 11.
8. Remove shaft and roller bearing assembly from pump or
motor.
9. Remove retaining ring from roller bearing assembly with
snap ring pliers. Remove roller bearing assembly.
10. Place roller bearing assembly on new shaft and secure
with retaining ring.
11. Wrap spline or key end of shaft with thin plastic to pre-
vent damage to seal lip during installation. Lubricate
inside diameter of shaft seal with petroleum jelly.
12. Place O-ring on shaft bearing and lubricate with petro-
leum jelly.
13. Slide seal carrier assembly over shaft and into housing
bore. Press against O-ring. Hold inward pressure against
shaft to compress cylinder block spring while pressing seal
carrier into place.
14. Install retaining ring.
Hydraulic Pump W/Hayes Pump Drive Coupling
Lubrication
Coat pump and drive coupling splines with Lithium Soap Base
Grease (TEXACO CODE 1912 OR EQUIVALENT) whenever
pump or pump drive coupling is removed. Coupling is greased
prior to assembly.
1. Ke y
2. Sha ft Ass emb ly
3. Ret ain ing R in g
4. Roll er B earin g
5. Shaf t
Figure 5-129. Shaft Components