HYDRAULIC SYSTEM
L3540-II, L4240-II, L5040-II, L5240-II, L5740-II , WSM
8-S26
[6] SAFETY VALVE
Disassembling Safety Valve
1. Remove the safety valve assembly (1).
2. Secure the safety valve assembly in a vise.
3. Loosen the lock nut (3), and remove the adjust screw (2).
4. Draw out the spring (4), seat (5) and ball (6).
(When reassembling)
• Install the safety valve to the hydraulic cylinder block, taking
care not to damage the O-ring.
9Y1211167HYS0035US0
Tightening torque
Safety valve assembly
40 to 49 N·m
4.0 to 5.0 kgf·m
29 to 36 lbf·ft
Safety valve lock nut
59 to 78 N·m
6.0 to 8.0 kgf·m
44 to 57 lbf·ft
(1) Safety Valve Assembly
(2) Adjust Screw
(3) Lock Nut
(4) Spring
(5) Seat
(6) Ball
(7) Housing