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 TM
5-2420-224-34
FORKLIFT LIFT CYLINDER REPLACEMENT, BLEEDING, AND
SEQUENCING (CONT)
R E M O V E CAP or PLUG from fitting (3).
2.
CONNECT HOSE assembly (4) to base of lift
cylinder (1).
INSTALL FORKLIFT CROSSHEAD (TM 5-
3.
2420-224-20).
INSTALL FORKLIFT CARRIAGE ASSEMBLY
4.
With no load on forks, extend and retract
1.
mast thru one complete cycle.
W i t h mast fully lowered, check vehicle
2.
hydraulic tank and top off as necessary
(LO 5-2420-224-12).
Raise and retract mast completely at least
3.
four more times. This will force air in system
to lift cylinder center cavity under bleeder
valve (1).
Raise carriage assembly approximately 10 in.
4.
(25.4 cm) off ground.
5.
Slide tubing through tube and onto bleeder
valve (1) located on top of lift cylinder (2).
Place other end of tubing in suitable container
to catch oil.
Open bleeder valve (1) no more than 1/4-turn
6.
with tube. Weight of carriage assembly will
force air and hydraulic oil out of lift cylinder
through bleeder valve (1).
If carriage assembly reaches bottom of its
7.
travel before all air is bled, close bleeder
valve (1) and repeat steps 4 thru 6.
W h e n oil stream no longer contains air
8.
bubbles, close bleeder valve (1) and tighten to
25-27 Ib-ft (44.9-46.6 N.m).
Fill hydraulic tank (LO 5-2420-224-12).
9.
11-54
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