C2, TM 9-2320-211-20
NOTE
Turning the adjusting screw clockwise
a. Removal.
increases the pressure required to open the
(1) Place a suitable container under filter to catch
relief valve. Turning the adjusting screw
spilled oil. A built in shutoff valve will prevent hydraulic
counterclockwise decreases the relief valve
oil reservoir from draining when filter element is
opening pressure.
removed. However, approximately one to three gallons of
(3) After the correct relief valve setting is obtained,
oil will spill from filter when removing and installing filter
hold the adjusting screw and tighten the locknut.
element.
(2) Remove four screws securing rear cover to filter
bank, and install the pipe plug.
housing.
d. Relief Valve Adjustment. (Parker Hannifin Valve
(3) Quickly pull rear cover and filter element from
Bank Assembly, 11621117).
housing.
(1) Remove capnut from relief valve adjusting screw
NOTE
and loosen jamnut.
Do not hesitate when pulling cover and filter
(2) Turn adjusting screw as necessary to obtain
element from housing. The shutoff valve will
correct relief setting of 1,210 and 1,215 psi.
not shut off oil flow from reservoir until cover
(3) After correct relief valve setting is obtained, hold
and filter element are removed from housing.
adjusting screw and tighten jamnut. Install capnut.
(4) Remove three screws securing rear filter element
(4) Disengage hydraulic pump, remove gage from
cap to front filter element cap. Separate caps from filter
valve bank, and install plug.
element.
(5) Remove seal ring from front filter element cap.
with five screws.
(6) Remove O-ring seal from rear cover.
NOTE
If correct pressure reading cannot be obtained
by adjusting relief valve, notify direct support
maintenance.
