wsm L503 Workshop Manual page 455

L3130 · L3430 · L3830 · L4630 · L5030, WSM
Rear Hydraulic Block
1. Disconnect the position control feedback rod (5) and return hoses
(4).
2. Remove the lowering speed adjusting valve joint shaft (8).
3. Disconnect the hydraulic cylinder hose RH (2) and delivery pipe
(3).
4. Tap out the spring pin from position control lever (1).
5. Remove the auxiliary control valve (9) and pipes (10).
6. Remove the rear hydraulic block mounting screws.
7. Remove the rear hydraulic block (6) and disconnect the position
control lever (1) and hydraulic cylinder hose LH (7).
(When reassembling)
• Install the copper washers firmly.
• Visually inspect the gasket, if damaged replace with new one.
• After reassembling, be sure to adjust the position control
feedback rod length. (See page 8-S12.)
Hydraulic cylinder hose
Tightening torque
Delivery pipe joint bolt
(1) Position Control Lever
(2) Hydraulic Cylinder Hose RH
(3) Delivery Pipe
(4) Return Hose
(5) Position Control Feedback Rod
(6) Rear Hydraulic Block
Lowering Speed Adjusting Valve
1. Draw out the spring pin (4).
2. Remove the holder (5).
3. Draw out the lowering speed adjusting shaft (3), dowel pin (6)
and rotor (2).
(When reassembling)
• Take care not to damage the O-rings.
(1) Rear Hydraulic Block
(2) Rotor
(3) Lowering Speed Adjusting Shaft
Check Valves
1. Remove the plug (3).
2. Draw out the spring (2) and poppet (1).
(When reassembling)
• Take care not to damage the O-ring.
(1) Poppet
(2) Spring
8-S15
HYDRAULIC SYSTEM
34.3 to 48.1 N·m
3.5 to 4.9 kgf·m
25.3 to 35.4 ft-lbs
49.0 to 68.6 N·m
5.0 to 7.0 kgf·m
36.2 to 50.6 ft-lbs
(7) Hydraulic Cylinder Hose LH
(8) Lowering Speed Adjusting Valve
Joint Shaft
(9) Auxiliary Control Valve
(10) Auxiliary Pipe
W1016371
(4) Spring Pin
(5) Holder
(6) Dowel Pin
W1016653
(3) Plug
W1016889
KiSC issued 02, 2007 A