Servicing - Kubota M5640SU Workshop Manual

M5640SU, M5640DT-SU, WSM

6. SERVICING

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 it.
Factory spec.
Cylinder I.D.
Allowable limit
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.
Factory spec.
Clearance between
hydraulic arm shaft and
bushing (Right side)
Allowable limit
Hydraulic arm shaft O.D.
Factory spec.
(Right side)
Bushing I.D. (After
Factory spec.
press-fitted) (Right side)
Factory spec.
Clearance between
hydraulic arm shaft and
bushing (Left side)
Allowable limit
Hydraulic arm shaft O.D.
Factory spec.
(Left side)
Bushing I.D. (After
Factory spec.
press-fitted) (Left side)
(When reassembling)
• When press-fitting a new bushing with a press-fitting tool (refer
to "9. SPECIAL TOOLS" at GENERAL Section), observe the
dimensions described in the figure.
• When press-fitting a new bushing, apply transmission fluid to
the hydraulic cylinder liner boss and bushing.
• When press-fitting a new bushing, press-fit it so that each seam
faces up.
Press-fit location of Factory
bushing spec.
(1) Collar (Left)
(2) O-ring
(3) Bushing (Left)
(4) Bushing (Right)
(5) O-ring
(6) Collar (Right)
8-S16
HYDRAULIC SYSTEM
90.000 to 90.050 mm
3.5433 to 3.5452 in.
90.15 mm
3.549 in.
9Y1210365HYS0016US0
0.0490 to 0.154 mm
0.00193 to 0.00606 in.
0.50 mm
0.020 in.
49.950 to 49.975 mm
1.9666 to 1.9675 in.
50.024 to 50.104 mm
1.9695 to 1.9725 in.
0.0490 to 0.149 mm
0.00193 to 0.00587 in.
0.50 mm
0.020 in.
44.950 to 44.975 mm
1.7697 to 1.7706 in.
45.024 to 45.099 mm
1.7726 to 1.7755 in.
14.5 to 15.5 mm
"A"
0.571 to 0.610 in.
22.5 to 23.5 mm
"B"
0.886 to 0.925 in.
(a) Right Side
(Flush the end of collar with the
end of hydraulic cylinder body.)
9Y1210365HYS0017US0
KiSC issued 07, 2009 A