wsm B2420 - Hydraulic Cylinder

HYDRAULIC SYSTEM
B2420, WSM
8-S14
Side Plate Thickness
1. Measure the side plate thickness with an outside micrometer.
2. If the thickness is less than the allowable limit, replace it.
9Y1210436HYS0022US0
(2) Hydraulic Cylinder
Hydraulic Cylinder Bore
1. Check the cylinder internal surface for scratch 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.
9Y1210436HYS0023US0
Clearance between Hydraulic Arm Shaft and Bushing
1. Measure the hydraulic arm shaft O.D. with an outside
micrometer.
2. Measure the bushing I.D. with a cylinder gauge, and calculate
the clearance.
3. If the clearance exceeds the allowable limit, replace the
bushing.
9Y1210436HYS0024US0
Side plate thickness
Factory specification
2.48 to 2.50 mm
0.0977 to 0.0984 in.
Allowable limit
2.40 mm
0.0945 in.
Cylinder I.D.
Factory specification
70.05 to 70.10 mm
2.758 to 2.759 in.
Allowable limit
70.15 mm
2.762 in.
Clearance between
hydraulic arm shaft and
bushing
Factory specification
0.020 to 0.11 mm
0.00079 to 0.0043 in.
Allowable limit
0.30 mm
0.012 in.
Hydraulic arm shaft
O.D.
Factory
specifica-
tion
Right
37.925 to 37.950 mm
1.4932 to 1.4940 in.
Left
33.925 to 33.950 mm
1.3357 to 1.3366 in.
Bushing I.D.
(after press fitted)
Factory
specifica-
tion
Right
37.970 to 38.035 mm
1.4949 to 1.4974 in.
Left
33.970 to 34.035 mm
1.3374 to 1.3399 in.
KiSC issued 06, 2012 A