16-16. BOOM EXTEND CYLIDER - REPLAC/REPAIR (Contd)
Remove backup rings (29 and 30), two
backup rings (31), and three O-rings (32-
34) from each counterbalance valve (27).
Discard O-rings (32-34).
Remove three backup rings (35-37) and
three O-rings (38-40) from counterbalance
valve (28). Discard O-rings (38-40).
DISASSEMBLE CYLINDER PARTS (41-55).
Remove needle valve (41).
Do not scratch or damage the wear surface of rod (42),
piston or gland (43).
Pull rod (42) out approximately 5 inches for
removal of gland (43).
Place a container under gland (43) to catch
oil contained in cylinder.
Use a spanner wrench to remove gland (43)
from barrel (44). Pull gland (43) out of
cylinder far enough to unseat O-ring (45).
Allow oil to drain into container.
Use care when removing rod (42) and piston assembly
to prevent wear ring (46) damage. Keep rod (42) in line
with cylinder tube to prevent binding.