Kubota ME8200DTN, Workshop Manual Supplement

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ME8200DTN, WSM HYDRAULIC SYSTEM
N8-S20
Cylinder Safety Valve
1. Remove the cylinder safety valve assembly (7).
2. Secure the cylinder safety valve assembly in a vise.
3. Loosen the lock nut (2), and remove the adjust screw (1).
4. Draw out the spring (3), seat (4), and ball (5).
(When reassembling)
A
Install the cylinder safety valve to the hydraulic cylinder block,
taking care not to damage the O-ring.
A
After disassembling and assembling the cylinder safety
valve assembly, be sure to check the operating pressure.
[3] SERVICING
(1) Steering Cylinder
Steering Cylinder I.D.
1. Measure the steering cylinder I.D. with a cylinder gauge.
2. If the cylinder I.D. exceed the allowable limit, replace the
cylinder barrel.
Clearance between Rod and Bushing
1. Measure the bushing I.D. with a cylinder gauge.
2. Measure the rod O.D. with a outside micrometer, and calculate
the clearance.
3. If the clearance exceeds the allowable limit, replace as a unit.
(E) Cylinder Safety Valve
Tightening torque
Cylinder safety valve
assembly
39.2 to 49.0
4.0 to 5.0
28.9 to 36.2 ft-lbs
Cylinder safety valve
lock nut
58.8 to 78.5
6.0 to 8.0
43.4 to 57.9 ft-lbs
(1) Adjust Screw (5) Ball
(2) Lock Nut (6) Housing
(3) Spring (7) Safety Valve Assembly
(4) Seat
0000003632E
Steering cylinder I.D.
Factory spec.
50.000 to 50.062 mm
1.96850 to 1.97094 in.
Allowable limit
50.100 mm
1.97244 in.
0000002881E
Clearance between rod
and bushing
Factory spec.
0.009 to 0.127 mm
0.00035 to 0.00500 in.
Allowable limit
0.135 mm
0.00531 in.
0000002882E
KiSC issued 04, 2006 A