Cylinder Safety Valve - Kubota L4400 Workshop Manual

L4400 , WSM

(3) Cylinder Safety Valve

Tractor Manuals Scotland - Please Do Not Copy
Tractor Manuals Scotland
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.
Clearance between
hydraulic arm shaft and
bushing
Hydraulic arm shaft O.D.
Bushing I.D.
(after press fitted)
Operating Pressure of Cylinder Safety Valve
1. Attach the cylinder safety valve to injection nozzle tester with a
safety valve setting adaptor.
2. Measurement the operating pressure of the cylinder safety valve.
3. If the operating pressure is not within the factory specifications,
adjust by turning the adjusting screw (1).
4. After adjustment, tighten the lock nut (2) firmly.
NOTE
• Use specified transmission fluid (see page G-8) to test the
operating pressure of the cylinder safety valve.
Cylinder safety valve
operating pressure
Tightening torque
(1) Adjusting Screw
(2) Lock Nut
(3) Spring
8-S25
HYDRAULIC SYSTEM
0.125 to 0.230 mm
Right
0.0049 to 0.0091 in.
Factory
spec.
0.125 to 0.220 mm
Left
0.00492 to 0.00866 in.
0.50 mm
Right
0.197 in.
Allowable
limit
0.50 mm
Left
0.0197 in.
44.920 to 44.950 mm
Right
1.76850 to 1.76968 in.
Factory
spec.
39.920 to 39.950 mm
Left
1.57165 to 1.57283 in.
45.075 to 45.150 mm
Right
1.77460 to 1.77756 in.
Factory
spec.
40.075 to 40.140 mm
Left
1.57775 to 1.58031 in.
19.6 to 22.6 MPa
Factory spec. 200 to 230 kgf/cm
2845 to 3277 psi
58.8 to 78.5 N·m
Lock nut 6.0 to 8.0 kgf·m
43.4 to 57.9 ft-lbs
(4) Seat
(5) Ball
(6) Housing
W1026122
2
W1029814
KiSC issued 07, 2007 A