TM 5-3805-290-23-1
THEORY OF OPERATION - CONTINUED
0003 00
HYDRAULIC SYSTEM - CONTINUED
3.
Hydraulic Oil Cooler.
a.
Hydraulic oil cooler is located directly in front of
hydraulic fan. Hydraulic oil cooler provides
cooling for all hydraulic systems that use oil
from hydraulic oil tank.
b.
Hydraulic oil cooler is located next to transmis-
sion oil cooler.
c.
Hydraulic oil cooler keeps hydraulic oil at cor-
rect operating temperature.
427-B1543
d.
Oil flows from axle oil cooler pump and motor to
hydraulic oil cooler. If machine is not equipped
with an axle oil cooler pump and motor, oil flows
from hydraulic fan motor. After oil is cooled, oil
flows to hydraulic oil filter. Then, oil is returned
to tank.
e.
If pressure differential between inlet and outlet
of hydraulic oil cooler exceeds 30 psi (207 kPa),
oil cooler bypass valve will divert oil around
hydraulic oil cooler.
427-B1744
0003 00-135