HYDRAULIC SYSTEM
KUKJE MACHINERY CO., LTD.
150
4. CHECKING, DISASSEMBLING AND SERVICING
< Lift arm, hydraulic arm shaft and hydraulic arm>
1. Remove the external snap ring, and remove the
lift arm LH.
2. Draw out the hydraulic arm shaft and lift arm RH
as a unit.
▷ Reassembling
9 Align the alignment marks of the hydraulic arm
and hydraulic arm shaft.
9 Align the alignment marks of the lift arm LH and
hydraulic arm shaft.
9 Apply grease to the right and left bushing and
O-rings.
9 Take care not to damage the O-rings.
< Hydraulic piston >
1. Inject the compressed air into the hydraulic
cylinder, and take out the hydraulic piston.
▷ Reassembling
9 Take care no to damage the O-ring and backup
ring.
9 Apply transmission fluid to the O-ring.
9 Replace the O-ring if it is defective, worn or
scratched, which may cause oil leakage.
< Lowering speed adjusting valve >
1. Remove the lowering speed adjusting valve
body(2) with the lowering speed adjusting
shaft(1).
2. Draw out the poppet(3).
▷ Reassembling
9 Take care not to damage the O-rings.
*. PART NAME
1) Lowering speed adjusting shaft
2) Lowering speed adjusting valve body
3) Poppet
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