6-31
HYDRAULIC OIL
Using dipstick, measure oil level, and oil if
necessary.
When changing hydraulic oil, clean
suction strainer(screwed into outlet port
pipe) and line filter(screwed into inlet
pipe). Line filter uses paper element, so
replace periodically(every 6 months or
1200 hours)
GROUP 2 OPERATIONAL CHECKS AND TROUBLESHOOTING
2)
CONTROL VALVE
Raise forks to maximum height and
measure oil pressure.
Check that oil pressure is 210
kgf/cm
2
.
(2990
psi
)
110D7EHS14
110D7EHS15
100D7HS18
3)
(1)
1. OPERATIONAL CHECKS
CHECK ITEM
Check visually for deformation, cracks or
damage of rod.
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).
·
Check condition
- Hydraulic oil : Normal operating temp
- Mast substantially vertical.
- Rated capacity load.
·
HHydraulic drift
- Down(Downward movement of forks)
: Within 100
mm
(3.9
in
)
- Forward(Extension of tilt cylinder)
: Within 5
。
If the hydraulic drift is more than the
specified value, replace the control valve
or cylinder packing.
Check that clearance between tilt cylinder
bushing and mounting pin is within
standard range.
(1)
(2)
(3)
1)
Standard Under 0.6 (0.02)
mm (in)
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