Manual

28
HYDRAULIC SYSTEM
Standard Two-Circuit Hydraulic Plumbing
The apron cylinders and the push-off cylinder are controlled on the same circuit with the sequence
of the operation controlled by a sequence valve. The other hydraulic circuit controls the lift cylinders
on the earthmover.
*To adjust the sequence valve, see Troubleshooting section.
Optional Three-Circuit Hydraulic Plumbing
The apron cylinders, push-off cylinder, and lift cylinders are all on separate hydraulic circuits.
PUSHING THE EARTHMOVER
WARNING!
High Pressure Fluid Hazard – To prevent serious injury or death from high pressure uid:
a) Relieve pressure on hydraulic system before repairing, adjusting, or disconnecting.
b) Wear proper hand and eye protection when searching for leaks.
c) Keep all components in good repair.
CAUTION! The I-150SP earthmover must be pushed in a straight line with a maxi-
mum of a 150 hp dozer. Do not ram or jar the earthmover while pushing and push at a constant
speed.
CAUTION! Relieve all hydraulic pressure before working on the hydraulic system.