8.1.2 Carriage
The carriage moves up and down smoothly along the channel of the inner mast with
main rollers. The main rollers are mounted on the main roller shafts and blocked by snap
rings. The main roller shafts are welded on the carriage. The side rollers fitted on the
carriage with bolts. They roll along the flank plate of the inner mast and can be adjusted by
shims. Two fitted side rollers roll along the outside of the flank plate of the inner mast to
prevent the rolling clearance. The main rollers sustain the longitudinal loads and the side
rollers sustain the transverse loads.
Fig.8-2 Carriage
8.1.3 Fork pin
The fork pin fastens the fork on the definite position. When adjusting the clearance of
the fork, pull the fork pin turn 1/4 circle, the fork clearance must be adjusted according to
the loaded goods.
8.1.4 Roller position (Fig.8.3)
There are two kinds of rollers, main roller and side roller. They are separately mounted
on the outer mast, inner mast and carriage. The main rollers sustain the loads from front
and rear direction while the side rollers sustain the side loads.
Notice: (a) Adjust the clearance of the side rollers to 0.5mm.
(b) Add grease on the surface of the main roller and the mast contact surface.
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