135
8
MAST
Troubleshooting
8- 4.
NO.
Symptom
Problem
Solution
1
Inner mast lifts up
together with Lift
bracket.
1. Improper gap of lift rollers and/or side rollers
Adjust
2
Lifting and
lowering of Lift
bracket is not
smooth.
1. Improper gap of lift rollers and/or side rollers
Adjust
2. Defect of rollers
Replace
3. Chain roller does not rotate smoothly.
Repair
3
Lift bracket is
inclined
1. Gap of side rollers is too big.
Adjust
2. Unequal tension of L.H and R.H chains
Adjust
4
Lifting and
lowering of
inner mast is not
smooth.
1. Improper gap between rollers and mast channel
Adjust
2. Defect of rollers
Replace
5
Inner mast
is inclined at
extended position
1. Adjustment at the top end of the lift cylinder is not
proper.
Adjust
Adjust
6
Tip of both forks
don't have the
same height.
1. Bending of forks
Repair,
Replace
2. One-sided load distribution on forks
Proper
operation
3. Bending of the tilt bar
Repair,
Replace
8-4-1. Mast · Lift bracket · Fork - troubleshooting
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