Use a vise with soft jaws to secure cylinder in
a horizontal position for disassembly.
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 valve entirely.
Remove two elbows (8) and preformed
packings (23) from boom extend cylinder (2).
Discard preformed packings.
Note and mark location of counterbalance
valves for use during assembly. Counterbalance valves are not interchangeable.
If damaged, remove two counterbalance valves (24 and 25) from boom extend cylinder (2).
Remove back-up rings (26 and 27), two back-up rings (28), and preformed packings (29, 30, and 31) from
counterbalance valve (24). Discard preformed packings.
Remove back-up rings (32, 33, and 34) and preformed packings (35, 36, and 37) from counterbalance valve
(25). Discard preformed packings.