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(1) Place piston rod heads into the upper beam of the inner mast without shims.
(2) Ensure that two lift cylinders are lifted at the same time when the mast ascended
the ultimately stroke.
(3) If they not lifted synchronously, add shims between the upper beam of the inner
mast and the piston rod head which reaches the lift cylinder’s ultimately stroke in
movement. The shims’ thickness is 0.2mm or 0.5mm.
(4) Adjust the tightness of lift chains.
The adjustment of lift cylinder also belongs to exalted maintenance. Please be
careful.
Fig. 6-5 Adjust lift cylinder
6.5.2 Adjust lift bracket’s height
(1) The truck should be stopped on horizontal ground. And ensure the masts erect.
(2) Lower the forks on the ground, adjust the set nut of tie-in on the upper of chains
to assure the distance A = 19mm～20mm between main rollers and the lift bracket.
(3) Make the mast assembly tilt backward when forks descended to the ground,
adjust the pulling force of lift chains and let the tightness of lift chains be equal.
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