Ashland I-150SP - Manual (Page 19)

19
H
YDRAULIC
S
YSTEM
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.
Push-off Cylinder Hydraulic System
A pressure relief valve, in both two-circuit and three-circuit hydraulic plumbing, pro-
tects the pushoff cylinder hydraulic system. This pressure relief valve is designed to
limit the hydraulic oil pressure delivered to the push-off cylinder. This valve is preset
from the factory at 2000 psi.
*To adjust the pressure relief valve, see Troubleshooting section.
CAUTION! Relieve all hydraulic pressure before working on the hydraulic
system.
WARNING! High Pressure Fluid Hazard – To prevent serious injury or death
from high pressure fluid:
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.