wsm M8540NARROW - Page 223

HYDRAULIC SYSTEM
M8540Narrow, M9540Narrow, WSM
N8-S21
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.
9Y1210236HYS0031US0
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.
9Y1210236HYS0032US0
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.
9Y1210236HYS0033US0
Tightening torque
Seat plug 1
40 to 58 N·m
4.0 to 6.0 kgf·m
29 to 43 lbf·ft
Seat plug 2
40 to 58 N·m
4.0 to 6.0 kgf·m
29 to 43 lbf·ft
(1) Seat Plug 1
(2) Spring
(3) Unload Poppet 1
(4) Seat Plug 2
(5) Spring
(6) Unload Poppet 2
Tightening torque
Seat plug
40 to 58 N·m
4.0 to 6.0 kgf·m
29 to 43 lbf·ft
Lock nut
16 to 19 N·m
1.6 to 2.0 kgf·m
12 to 14 lbf·ft
(1) Adjuster
(2) Poppet Valve
(3) Collar
(4) Spring
(5) Seat Plug
(6) Spool
(7) Spring
(8) Lock Nut
(9) Spool Joint 1
Tightening torque Seat plug
30 to 49 N·m
3.0 to 5.0 kgf·m
22 to 36 lbf·ft
(1) Check Valve
(2) Spring
(3) Seat Plug
KiSC issued 07, 2013 A