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TM 10-3930-638-24&P
2-56. HYDRAULIC LIFT SYSTEM MAINTENANCE (cont)
a. Operational Test (cont)q
NORMAL
IF INDICATION
IF INDICATION
STEP
PROCEDURE/ACTION
INDICATION
IS NORMAL
IS ABNORMAL
7
Place tilt control lever in
Mast moves
Proceed to step 8
Proceed to step 5
REAR position; release
rearward
when mast is in full rear-
smoothly
ward position
8 Place tilt control lever in
FWD position; release
lever when mast is in
vertical position
9
Place lift control lever in
Mast moves
Proceed to step 10 Replace restrictor (para 2-56f(1))
LOWER position; release
downward
when forks are touching
smoothly
ground
10
Position vehicle to pickup
Downward drift Proceed to step 11 Bleed air from lift cylinder assembly (para
a 4000 pound load, Place
of mast shall not
2-56 f(1), step 27)
lift control lever in
exceed one inch.
RAISE position; release
when mast is at full
height, Allow mast to
remain at full height
for two minutes
11
Place lift control lever in
Forks shift
Proceed to step 14 Check sideshift chains and pulleys for wear
LOWER position; release
load to right
or damage; replace as necessary (para 2-56e).
lever when forks are
smoothly
Proceed to step 12
three feet from ground,
Then place shift control
lever in RIGHT position
until forks are at ex.
treme right position
12
Place lift control lever in
No oil leakage
Reconnect fitting
Notify direct support maintenance (sideshift
LOWER position until
at sideshift
to sideshift cyl-
cylinder requires replacement)
load is resting on ground.
cylinder
inder assembly.
Disconnect fitting at rod
assembly port
Proceed to step
end of sideshift cylinder
where fitting
13
assembly and plug fitting.
disconnected
Place shift control lever
in RIGHT position and
hold
13
Check hoses, lines and
No oil leaks
Notify direct sup-
Tighten fittings; replace leaking hoses
fittings between control
port maintenance (para 2-56f)
valve and sideshift cylinder
(control valve
assembly for oil leaks
requires replace-
ment)
2-394 Change 2
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