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