7-S12
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM
HYDRAULIC SYSTEM
(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.
W1013716
Clearance between hydraulic Arm Shaft and Bush
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.
W1013775
Cylinder I.D.
Factory spec.
70.05 to 70.10 mm
2.7579 to 2.7598 in.
Allowable limit
70.15 mm
2.7618 in.
Clearance
between hydraulic
arm shaft and
bushing
Left
Factory spec.
0.020 to 0.110 mm
0.0008 to 0.0043 in.
Allowable limit
0.30 mm
0.0118 in.
Right
Factory spec.
0.020 to 0.110 mm
0.0008 to 0.0043 in.
Allowable limit
0.30 mm
0.0118 in.
Hydraulic arm
shaft O.D.
Left Factory spec.
37.925 to 37.950 mm
1.4931 to 1.4941 in.
Right Factory spec.
33.925 to 33.950 mm
1.3356 to 1.3366 in.
Bushing I.D. (after
press fitted)
Left Factory spec.
37.970 to 38.035 mm
1.4949 to 1.4974 in.
Right Factory spec.
33.970 to 34.035 mm
1.3374 to 1.3400 in.