(2) Disassembling Hydraulic Assembly; Lowering Speed Adjusting Valve; Check Valves- Page 572

HYDRAULIC SYSTEM

L3560, L4060, L4760, L5060, L5460, L6060, WSM

8-S19

(2) Disassembling Hydraulic Assembly

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)

• Be careful not to damage the O-rings.

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Check Valves

1. Remove the plug (3).

2. Draw out the spring (2) and poppet (1).

(When reassembling)

• Be careful not to damage the O-ring.

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Cylinder Safety Valve

1. Remove the cylinder safety valve assembly (1).

2. Secure the cylinder 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)

• Be careful not to damage the O-rings.

IMPORTANT

• After disassembling and assembling the cylinder safety

valve assembly, be sure to check the operating pressure.

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Position Control Valve

1. Remove the position control valve (1) from rear hydraulic block

(2).

(When reassembling)

• Be careful not to damage the O-rings.

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(1) Rear Hydraulic Block

(2) Rotor

(3) Lowering Speed Adjusting Shaft

(4) Spring Pin

(5) Holder

(6) Dowel Pin

(1) Poppet

(2) Spring

(3) Plug

Tightening torque

Cylinder safety valve 

assembly

40 to 49 N·m

4.0 to 5.0 kgf·m

29 to 36 lbf·ft

Cylinder safety valve lock 

nut

59 to 78 N·m

6.0 to 8.0 kgf·m

44 to 57 lbf·ft

(1) Cylinder Safety Valve Assembly

(2) Adjusting Screw

(3) Lock Nut

(4) Spring

(5) Seat

(6) Ball

(7) Housing

(1) Position Control Valve

(2) Rear Hydraulic Block

KiSC issued 03, 2016 A