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TM 10-3930-630-12
(4) Check bearing alinement by placing a
(5) Refer to figure 4-10 and connect lift chains
straightedge as shown in figure 4-15. Place straightedge
to carriage.
against stud centerline of all three bearings on both sides
(6) Install backrest (5, fig. 4-11) on carriage
of carriage.  No visible gap should be seen between
and secure with screws (1), lockwashers (2), washers (3)
bearings and straightedge.
and nuts (4).
(5) Check to see that upper bearing mounting
(7) Operate lift mechanism and check carriage
screw s tightened to a secure fit.
travel.
g. Installation.
4-37. Tilt Cylinders
(1) Refer to figure 4-1 and install lift forks on
a.  General Tilt cylinders, anchored at the
carriage.  Place wood under carriage and forks as
frame and attached to the outer mast, extend through
described in c. above. Adjust wood and blocks to bring
the front of the frame.  Hydraulic pressure from the
carriage to a straight upright position.
control valve extends or retracts cylinder rods to tilt the
(2) Operate engine and raise mast high enough
mast.
b.  Inspection
for inner mast channels to clear carriage bearing.
(1) Operate truck and check tilt cylinder opera-
(3) Move truck to bring inner mast channels
tion. Check degrees of tile (e. below).
directly above and centered over carriage bearings.
(2) Remove  floor  and  toe  plates  from
Slowly lower inner mast, making sure carriage bearings
operator's compartment.
enter inner mast channels smoothly.
(3) Inspect hoses (fig. 4-16) and fittings at tilt
(4) Install  screws  (2  and  4,  fig.  4-12),
cylinder for leaks and damage.
(3) and spacer (5).
Figure 4-16. Tilt cylinder, removal and installation.
4-25

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