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Page Title:
BOOM EXTEND CYLINDER REPLACEMENT/REPAIR - continued |
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 TM 10-3930-673-34
16-18. BOOM EXTEND CYLINDER REPLACEMENT/REPAIR (CONT)
CAUTION
Use care when installing rod and piston
assembly. Keep rod in line with barrel to
prevent binding. Failure to follow this
precaution will cause part damage.
(i)
Lubricate barrel (41) inner diameter,
piston (44) outside diameter, and gland
(40) outside diameter with clean
hydraulic oil.
(j)
Position rod (39) and piston (44) as an
assembly in barrel (41).
NOTE
Tighten gland so that it is flush with end
of barrel. Do not over tighten gland.
TR01817
(k)
Tighten gland (40) on barrel (41).
(l)
Install needle valve (38) on barrel (41).
(2)
Install counterbalance valves (24 and 25) on
boom extend cylinder (2).
(a)
Install preformed packings (35, 36, and
37) and back-up rings (32, 33, and 34) on
counterbalance valve (25).
(b)
Install back-up rings (26 and 27), two
back-up rings (28) and preformed
packings (29, 30, and 31) on
counterbalance valve (26).
(c)
Install two assembled counterbalance
valves (24 and 25) in boom extend
cylinder (2) as noted during disassembly.
(3)
Install two preformed packings (23) and
elbows (8) on boom extend cylinder (2).
TR01435
16-106
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