wsm M8540NARROW Workshop Manual page 223

M8540Narrow, M9540Narrow, WSM
Plug and Unload Valve
1. Secure the control valve with a vise.
2. Remove the seat plug 1 (1) for unload poppet 1 (3).
3. Draw out the spring (2) for unload poppet 1 (3).
4. Remove the seat plug 2 (4) for unload poppet 2 (6).
5. Draw out the spring (5) and unload poppet 2 (6).
(When reassembling)
• Install the plug, noting O-ring.
Seat plug 1
Tightening torque
Seat plug 2
(1) Seat Plug 1
(2) Spring
(3) Unload Poppet 1
Spool and Poppet Valve
1. Remove the lock nut (8) for spool (6).
2. Draw out the spool (6).
3. Remove the seat plug (5) for poppet valve (2).
4. Draw out the spring (4), collar (3) and poppet valve (2).
IMPORTANT
• Do not change the adjuster (1) adjustment.
• Do not disassemble the spool joint 1 (9) from the spool (6)
unless necessary.
(When reassembling)
• Install the poppet valve, noting O-ring and backup ring.
Seat plug
Tightening torque
Lock nut
(1) Adjuster
(2) Poppet Valve
(3) Collar
(4) Spring
(5) Seat Plug
Check Valve
1. Remove the seat plug (3).
2. Draw out the spring (2) and check valve (1).
(When reassembling)
• Install the plug, noting O-ring.
Tightening torque Seat plug
(1) Check Valve
(2) Spring
N8-S21
HYDRAULIC SYSTEM
40 to 58 N·m
4.0 to 6.0 kgf·m
29 to 43 lbf·ft
40 to 58 N·m
4.0 to 6.0 kgf·m
29 to 43 lbf·ft
(4) Seat Plug 2
(5) Spring
(6) Unload Poppet 2
9Y1210236HYS0031US0
40 to 58 N·m
4.0 to 6.0 kgf·m
29 to 43 lbf·ft
16 to 19 N·m
1.6 to 2.0 kgf·m
12 to 14 lbf·ft
(6) Spool
(7) Spring
(8) Lock Nut
(9) Spool Joint 1
9Y1210236HYS0032US0
30 to 49 N·m
3.0 to 5.0 kgf·m
22 to 36 lbf·ft
(3) Seat Plug
9Y1210236HYS0033US0
KiSC issued 07, 2013 A