Remove detent ball retaining
screw, spring, ball, spool snap
ring, and washer. Remove spool
cover and ensure the o-ring
remained in valve housing.
1
Place the small o-ring in the
wide “V” groove on the valve
spool and grease.*
2
Slide spring retainer with large
o-ring placed around the outside
onto the valve spool. Flat side
toward valve housing.
3
Slide piston assembly onto valve
spool as shown below. Grease*
quadring seal.
4
Slide clevis pin through piston
assembly and valve spool eye.
Secure with provided snapring.
5
Slide piston cap over piston
assembly. Make sure that the
cap is centered and that the
large o-ring (step 3) is properly
seated.
6
Install capscrews finger tight.
Test with shop air for good spool
movement and to allow cap to
center. Torque capscrews to
15 ft.lbs. alternating diagonal
corners. Re-apply shop air to
ensure proper operation.
7
Light duty petroleum or
synthetic grease.
Raise port
1/8 in. NPT
Lower port
1/8 in. NPT
ACM-302
Installation Instructions
O-ring in valve housing
Quadring seal
*
