6-9
GROUP 2 OPERATIONAL CHECKS AND TROUBLESHOOTING
1. OPERATIONAL CHECKS
CHECK ITEM
Check visually for deformation, cracks or
damage of rod.
Load maximum load, set mast vertical and
raise 1m from ground. Wait for 10
minutes and measure hydraulic
drift(amount forks move down and amount
mast tilts forward).
Â
HHydraulic drift
- Down(Downward movement of forks)
: Within 100
mm
(3.9
in
)
If the hydraulic drift is more than the
specified value, replace the control valve
or cylinder packing.
(1)
(2)
1)
MANIFOLD ASSY
Raise forks to maximum height and
measure oil pressure.
Check that oil pressure is 150
kgf/cm
2
.
(2130
psi
)
10BOP7HS16
3)
(1)
HYDRAULIC OIL
Measure oil level using dipstick, and refill
oil if necessary.
Before changing hydraulic oil, take out and
clean strainer which is assembled with
flange after loosening the bolts and
replace the element of the return filter if
necessary. (Change interval of the return
filter : 2000 hours)
2)
(1)
(2)
10BOP7OM127
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