Page 20
45-J Desel - Servce & Parts Manual
January 2022
Secton 10 - Hydraulc System
Steer Cylinders
This machine has two Steer Cylinders that control the angle of the steerable wheels.
Steering is not self-centering.
Boom Lift Cylinders
Two hydraulic lift cylinders raise and lower the boom assembly in sequence.
Boom Extend Cylinder
One hydraulic cylinder extends and retracts the upper boom.
Platform Level Cylinder
One hydraulic cylinder levels the platform as needed as the boom is raised and lowered.
Platform Rotator
One rotary hydraulic actuator rotates the platform 90° either side of the centered position.
Jib Cylinder
One hydraulic cylinder raises and lowers the jib.
Auxiliary Power Unit
The Auxiliary Power Unit provides hydraulic fluid power to lower the platform in the event of
engine failure or emergency.
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