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GROUP 2 OPERATIONAL CHECKS AND TROUBLESHOOTING
1. OPERATIONAL CHECKS
1
1
)
FORKS
Measure thickness of root of forks and
(1)
check that it is more than specified value.
EX :
=1050mm(41.3in)
STD Fork assy Applicable model
64HW-11030
10/13BOP-7
(2)
Set forks in middle and measure
difference in height at tip of forks.
Model
equal or below 1200
10/13BOP-7
(3)
Most force is concentrated at root of fork
and at hook, so use crack detection
method to check cracks.
2. MAST
1)
Check for welding cracks of the side arm, the chain mounting plate on the carriage assy and
welding crack between carriage assy and floor assy of the platform.
Check visually or use crack detection method. Repair any abnormality.
2)
Set mast vertical, raise forks and platform about 10cm from ground and check front-to-rear
clearance and left-to-right clearance between inner mast and platform, and between outer mast and
inner mast. Use these figures to judge if there is any play at roller or rail.
Front-to-rear clearance : Within 2.0mm(0.08in)
Left-to-right clearance : Within 2.5mm (0.10in)
3)
Check that there is an oil groove in bushing at mast support.
4)
Set mast vertical, raise forks and platform about 10cm from ground, and push center of lift chain
with finger to check for difference in tension.
If there is any difference in tension, adjust chain stopper bolt.
5)
Check visually for abnormalities at thread of chain anchor bolt, and at contact surface between
chain wheel and chain.
Rotate chain wheel by hand and check for any play of bearing.
mm(in)
Standard
Limit
40(1.6)
36(1.4)
Height
Fork length
difference
3
above 1200
6
mm
8-3
Thickness
10BOP7FK01
Difference in height
at tip of forks
10BOP7FK02
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