Service Manual Instruction Manual

Table Of Contents

SECTION 3 - CHASSIS & TURNTABLE

3-34 – JLG Lift – 3121616

Motor Control Valve Disassembly

1. Place unit on bench with motor end up.

2. Remove Drain Plug (1P) and drain oil from gearbox.

3. Remove Hydraulic Tubing Assembly (35).

4. Loosen jam nuts on Elbow Fittings (30). Remove fittings

from Brake (6) and Motor Control Valve (32).

5. Remove O-ring Plugs (23) from Motor Control Valve (32).

6. Remove four bolts (21), washers (22), and Motor Control

Valve (32) from Motor (31).

7. Reinstall Drain Plug (1P). Torque to 23 - 24 ft-lb (31 - 32.5

Nm).

Figure 3-47. Main Control Valve Disassembly

Motor and Brake Disassembly

1. With unit resting on bench with Motor (31) end up,

remove Hex Bolts (29) and Lift Lugs (28) from Motor (31).

2. Pull Motor (31) straight up and remove Motor (31) from

Brake Housing (6).

3. Remove O-ring (26) between Motor (31) and Brake

Housing (6).

4. Remove Springs (8L) from piston.

PISTON (8A) MAY MOVE QUICKLY. WEAR EYE PROTECTION.

5. Apply less than 50 psi air to brake port to remove Brake

Piston (8A).

6. Remove Rotors (8J) and Stators (8K) from Brake Housing

(6)

Figure 3-48. Motor and Brake Disassembly

O-Ring