8-S18
L3130 · L3430 · L3830 · L4630 · L5030, WSM
HYDRAULIC SYSTEM
(3) Servicing
Operating Pressure of Cylinder Safety Valve
1. Attach the cylinder safety valve to a injection nozzle tester with a
safety valve setting adaptor.
2. Measure 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.
• Use specified transmission fluid (see page G-7, 8) to test the
operating pressure of the cylinder safety valve.
W10205610
[4] LIFT ARM SUPPORT AND HYDRAULIC CYLINDER
(1) Disassembling and Assembling
Top Link, Lift Rod and PTO Cover
1. Remove the top link (1) and PTO cover (3).
2. Disconnect the lift rods (2), (4) from lift arm.
(When reassembling)
W1018168
Cylinder safety valve
operating pressure
Factory spec.
19.6 to 22.6 MPa
200 to 230 kgf/cm
2
2845 to 3271 psi
Tightening torque
Cylinder safety valve lock
nut
58.8 to 78.5 N·m
6.0 to 8.0 kgf·m
43.4 to 57.9 ft-lbs
(1) Adjusting Screw
(2) Lock Nut
(3) Spring
(4) Seat
(5) Ball
(6) Housing
Tightening torque
Lift arm pin mounting nut
77.5 to 90.2 N·m
7.9 to 9.2 kgf·m
57.1 to 66.5 ft-lbs
Lift arm pin lock nut
62.8 to 72.6 N·m
6.4 to 7.4 kgf·m
46.3 to 53.5 ft-lbs
(1) Top Link
(2) Lift Rod RH
(3) PTO Cover
(4) Lift Rod LH
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General