Section 7
Hydraulic System
20412971
8-2012/Rev 08
7-7
Flexible Coupling Replacement
When the flexible coupling fails, the pump shaft will not turn and pressure will not be created.
Typically, failure will be sudden, without any warning signs.
The electric motor and hydraulic pump are mounted in tandem on all SL-V models. Although the
configuration is the same, the motor, pump, mountings, connections and components vary slightly
according to horsepower. The procedure for replacing the flexible coupling is the same for all
models.
Figure 7-6: Flexible Coupling Replacement
Severe injury can result if the machine is not properly locked out. Observe
electrical Lockout/Tagout procedures before performing maintenance on the
system components.
Ensure all pressure is relieved or blocked from the hydraulic and high pressure
circuits before performing maintenance.
1. Remove the bolts attaching the motor vibration mounts to the frame base plate.
2. Use wooden blocks to support the hydraulic pump and manifold assembly. Leave all hose
connections intact.
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