HYDRAULIC SYSTEM
L3301, L3901, L4701, WSM
8-S27
[2] HYDRAULIC CYLINDER
Hydraulic Cylinder Bore
1. Check the cylinder internal surface for scoring or damage.
2. Measure the cylinder I.D. with a cylinder gauge.
3. If the measurement exceeds the allowable limit, replace the
hydraulic cylinder block.
[L3301/L3901]
[L4701]
9Y1211012HYS0018US0
Clearance between Hydraulic Arm Shaft and Bushing
1. Measure the hydraulic arm shaft O.D. with an outside
micrometer.
2. Measurement the bushing I.D. with an inside micrometer, and
calculate the clearance.
3. If the clearance exceeds the allowable limit, replace the
bushing.
9Y1211012HYS0019US0
Cylinder I.D.
Factory specification
75.300 to 75.500 mm
2.9646 to 2.9724 in
Allowable limit
75.600 mm
2.9764 in
Cylinder I.D.
Factory specification
90.000 to 90.050 mm
3.5433 to 3.5452 in.
Allowable limit
90.150 mm
3.5492 in.
Clearance between
hydraulic arm shaft and
bushing
Factory
specifica-
tion
Right
0.125 to 0.220 mm
0.0049 to 0.0086 in.
Left
0.125 to 0.230 mm
0.00493 to 0.00905 in.
Allowable
limit
Right
0.50 mm
0.020 in.
Left
0.50 mm
0.020 in.
Hydraulic arm shaft O.D.
Factory
specifica-
tion
Right
39.920 to 39.950 mm
1.5717 to 1.5728 in.
Left
44.920 to 44.950 mm
1.7685 to 1.7696 in.
Bushing I.D.
(after press fitted)
Factory
specifica-
tion
Right
40.075 to 40.140 mm
1.5778 to 1.5803 in.
Left
45.075 to 45.150 mm
1.7746 to 1.7775 in.