MLRS ATTACHMENT CYLINDER REPAIR - CONTINUED
Hydraulic oil, under pressure, can remain within cylinder after disconnecting hydraulic hoses. To avoid
severe personal injury, slowly loosen counterbalance valve and allow pressure to escape before removing
Use a vise with soft jaws to secure cylinder in a horizontal position for disassembly.
Relieve pressure in cylinder by slowly removing counterbalance valve (1). Drain residual oil through valve holes into a
Remove back-up rings (2 and 3), two back-up rings
(4) and three O-rings (5 thru 7) from each counterbal-
ance valve (1). Discard back-up rings and O-rings.
Do not scratch or damage the wear surface
of rod, piston or gland. Follow this precau-
tion to prevent failure of the cylinder.
Pull rod (8) out approximately 5 in. (12.7 cm) for
removal of gland (9).
Place a container under gland (9) to catch oil con-
tained in cylinder.
Use spanner wrench to unscrew gland (9) from cylin-
der tube (10). Pull gland (9) out of cylinder far enough
to unseat O-ring (11). Allow oil to drain into container.
Use care when removing rod and piston
assembly to prevent wear ring damage.
Keep rod in line with cylinder tube to pre-
Remove rod (8) and piston assembly from cylinder
Place rod (8) and piston assembly on supports to prevent damage.
Remove two wear rings (12).