JLG 4394RT - Pump Coupling; Pump Coupling (GM Engine)

SECTION 3 - CHASSIS, PLATFORM & SCISSOR ARMS
3121642 – JLG Lift – 3-71
Pump Coupling
ALLOW ENGINE AND COMPONENTS TO COOL DOWN BEFORE SERVICING.
REMOVAL:
1. Disable machine operation.
2. Remove exhaust system and pumps (refer to Figure 3-
72. and Figure 3-76.).
3. Remove the bolts and washers to remove the muffler
mounting bracket (1) from the coupling cover (2).
4. Remove the bolts on the coupling cover to remove the
cover from the engine.
5. Remove the bolts on the coupling (3) to remove the cou-
pling from the engine.
INSTALLATION:
1. Follow Removal Steps in reverse.
1
2
3
4
1. Muffler Mounting Bracket 2. Coupling Cover 3. Coupling 4. Engine
Figure 3-77. Pump Coupling (GM Engine)