TM 5-3895-383-24
Charge Filter
SMCS Code: 3004; 4070; 5068
Part No.: 148-5611
Illustration 37
Right Side of Machine
(1) Inlet port. (2) Relief oil passage. (3) Outlet port. (4) Propel
charge filter.
Charge oil flows through propel charge filter (4) before entering
the two propel loops. During normal operation, charge oil
comes from the steering pump. Charge oil enters filter (4) at
inlet port (1). Filter (4) traps any debris that is in the oil. Oil
then exits filter (4) through outlet port (3) and flows to the
propel pumps. If filter (4) becomes plugged with debris, the
restriction to the flow of oil causes a pressure increase inside
filter (4). If the pressure differential across the element
reaches 350 kPa (50 psi), the pressure of the oil causes the
bypass valve to shift. Charge oil passes directly through the
bypass valve. The oil exits the filter through relief oil passage
(2) and flows to the thermal bypass valve. A manual filter
indicator shows the filter condition. At a pressure differential of
175 kPa (25 psi), the indicator will be in the red zone.
NOTE:
The filter should be replaced before the bypass
mode is reached.
Make sure that correct maintenance is performed so that the
filter element does not block the flow of clean hydraulic oil to
the propel system.
10-38
