HELI CQD16X1, Руководство по эксплуатации и обслуживанию

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5) Change the worn pulley and check if the pulley bearing is worn out.
6) Do not paint the new lifting chain.
7) Install the new lifting chain with new pins.
8) After the lifting chain is connected to chain anchor, adjust the chain tensity to
match fork or platform height.
Proper installment of chain and adjusting of mast will prolong chain service life.
4.8.16 Check fork
Wear will reduce the fork thickness gradually. Please make sure the fork height
meets the requirements of technical specification. Please do not make the fork rub
against with ground during normal travelling. If the fork rubs against the ground,
please check the adjustment of lifting chain. The wear at the heel of fork shall be
exceed 10% of original thickness. If the wear exceeds the value, fork load capacity
will reduce to 80% of rated capacity. Use equipments such as vernier caliper, 160
scale and so on.
Be familiar with fork capacity. Fork capacity and load center are pasted on the
truck. Overload may cause permanent deformation or serious fatigue condition.
Fatigue crack often begins from the hell part of fork. Crack can be found during
heel check. Check if there is any crack within 130mm of the outer diameter of fork
heel at any side. If there is crack, it means the performance at the area is reduced and
it is necessary to change fork. Check if there is crack visually every day. For more
accurate check, use dye penetrant or magnaflux.
Overload, collision with solid object or uneven distribution of load may cause
curve or distortion of fork. The max. allowable height difference at fork heel shall be
within 3% of fork length.
The included angle between fork horizontal section and backface of vertical
section shall be lower than 93
°
. If the included angle is larger than the value, the
fork shall be changed.