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10-6. HYDRAULICS CHECK AND
MAINTENANCE
(1) HYDRAULIC LIFT SYSTEM CHECKING
1. Clearance of bushing
1) Measure the outer of diameter of lift shaft
and power arm pin.
2) Measure the inner diameter of bushings
and calculate the clearances.
3) In case that clearance is out of service
limit, replace the parts.
Item Standard Service
value (in.) standard (in.)
Clearance between 0.000984
lift shaft and ~ 0,011811
bushing 0.003504
Clearance between 0.000787
piston rod and ~ 0,011811
bushing 0.003268
Check the Shaft and replace it if seized.
Replace bushing if the inside coating (gray color)
is worn out.
(2) CLEARANCE BETWEEN CYLINDER AND
PISTON
1) Measure the outer diameter of piston and
inner diameter of cylinder. CalcuIate the
clearance between piston and cylinder.
2) In case that clearance is out service limit,
replace the parts.
Item Standard Service
value (in.) limit (in.)
Clearance between 0.00236~
cylinder and piston 0.00386 0.00787
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