Parts Manual Owner manual
Table Of Contents
- SECTION 1 FRAME
- FIGURE 1-1. AXLE AND STEERING INSTALLATION - 2WD WITHOUT TOW BAR
- FIGURE 1-2. AXLE AND STEERING INSTALLATION - 2WD WITH TOW BAR (S/N 49971 TO PRESENT)
- FIGURE 1-3. AXLE AND STEERING INSTALLATION - 4WD.
- FIGURE 1-4. TIRE AND WHEEL DRIVE INSTALLATIONS
- FIGURE 1-5. DRIVE BRAKE ASSEMBLY.
- FIGURE 1-6. DRIVE HUB ASSEMBLY (PRIOR TO S/N 39594).
- FIGURE 1-7. DRIVE HUB ASSEMBLY (S/N 39594 TO PRESENT)
- FIGURE 1-8. DRIVE MOTOR ASSEMBLY - REAR
- FIGURE 1-9. DRIVE MOTOR ASSEMBLY - FRONT
- FIGURE 1-10. DRIVE VALVES INSTALLATIONS
- FIGURE 1-11. TOW BAR INSTALLATION - 2WD
- FIGURE 1-12. SEMI-TRACK INSTALLATION
- SECTION 2 TURNTABLE
- FIGURE 2-1. CONTROL VALVES INSTALLATIONS
- FIGURE 2-2. MAIN CONTROL VALVE ASSEMBLY - PROPORTIONAL
- FIGURE 2-3. TURNTABLE AND SWING DRIVE INSTALLATIONS
- FIGURE 2-4. SWING MOTOR ASSEMBLY
- FIGURE 2-5. SWING BEARING ASSEMBLY
- FIGURE 2-6. DEUTZ ENGINE INSTALLATION
- FIGURE 2-7. GENERATOR INSTALLATION - DEUTZ MACHINES (OPTIONAL)
- FIGURE 2-8. PISTON PUMP ASSEMBLY
- FIGURE 2-9. TANK INSTALLATIONS
- FIGURE 2-10. GROUND CONTROL BOX ASSEMBLY
- FIGURE 2-11. ELECTRICAL OPTIONS INSTALLATION (TURNTABLE MOUNTED)
- FIGURE 2-12. HOODS INSTALLATION
- SECTION 3 BOOM
- SECTION 4 PLATFORM
- FIGURE 4-1. PLATFORM INSTALLATION
- FIGURE 4-2. PLATFORM CONSOLE ASSEMBLY
- FIGURE 4-3. CONTROLLER ASSEMBLY (LIFT & SWING) (PRIOR TO S/N39857)
- FIGURE 4-4. CONTROLLER ASSEMBLY (LIFT & SWING) (S/N39857 TO PRESENT)
- FIGURE 4-5. CONTROLLER ASSEMBLY (DRIVE & STEER) (PRIOR TO S/N39857)
- FIGURE 4-6. CONTROLLER ASSEMBLY (DRIVE & STEER) (S/N39857 TO PRESENT)
- FIGURE 4-7. CONTROLLER ASSEMBLY (SPEED)
- FIGURE 4-8. SOFT TOUCH SYSTEM INSTALLATION (S/N 49601 TO PRESENT)
- SECTION 5 CYLINDER
- FIGURE 5-1. AXLE LOCKOUT CYLINDER ASSEMBLY
- FIGURE 5-2. PLATFORM LEVEL CYLINDER ASSEMBLY
- FIGURE 5-3. LIFT CYLINDER ASSEMBLY - JIB (450AJ ONLY)
- FIGURE 5-4. LIFT CYLINDER ASSEMBLY - MAIN
- FIGURE 5-5. LIFT CYLINDER ASSEMBLY - MID
- FIGURE 5-6. LIFT CYLINDER ASSEMBLY - TOWER
- FIGURE 5-7. ROTATOR CYLINDER ASSEMBLY - PLATFORM
- FIGURE 5-8. STEER CYLINDER ASSEMBLY
- FIGURE 5-9. TELESCOPE CYLINDER ASSEMBLY
- SECTION 6 HYDRAULIC
- SECTION 7 ELECTRICAL
- SECTION 8 DECALS
- SECTION 9 RECOMMENDED SERVICE PARTS STOCK
- SECTION 10 SPECIAL OPTIONS

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SECTION 9 RECOMMENDED SERVICE PARTS STOCK
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VARIABLE PARTS
3740080 Relay (Machines with Generator Option) (Figure 2-7) 1 1 1
4360336 Switch, Toggle (Machines with Generator Option)
(Figure 2-7)
111
4360501 Breaker, Circuit (Machines with Generator Option)
(Figure 2-7)
111
3740118 Delay, Timer (Machines with 4WD) (Figure 2-10) 1 1 1
4360321 Switch, Limit (Figure 3-1) 1 1 1
2940074 Latch (Australian Spec) (Figure 4-1) 1 1 1
4360336 Switch, Toggle (2WD Machines) (Figure 4-2) 1 1 1
4360331 Switch, Toggle (4WD Machines) (Figure 4-2) 1 1 1
4360057 Switch, Limit (Soft Touch System) (Figure 4-8) 1 1 1
4360387 Switch, Push Button (Soft Touch System) (Figure 4-8) 1 1 1
2900838 U.S. Standards Hardware Kit 1 1 1
7014676 U.S. Standards Tool Kit 1 1 1
MODELS 450A/450AJ WITH PROPORTIONAL CONTROLS
The following list will service fleets of machines (built to current production per date on the front cover) with
emergency repair parts which can be installed in the field. Parts from the list should be replaced when inven-
tory is depleted to keep service parts stock supplied. For further infomation, contact your JLG dealer or the
JLG Industries Parts Department.
JLG PART
NUMBER
DESCRIPTION
QTY PER FLEET
1-10 10-20 20 OR MORE