Disassembling Hydraulic Cylinder - wsm RTV900 Workshop Manual

RTV900, WSM
3 Position Valve and 4 Position Valve (Monoblock Type) (Conntinued)
1. Loosen the plug (9) and draw out the spool (8) with other component parts from valve body (21).
2. Remove the internal snap ring (15) and detent stopper (13).
3. Loosen the detent bolt (8) from spool (17) and then separate the spool and the detent bolt.
4. Remove the plug (9) and draw out the spool (20) with other component parts from valve body (21).
5. Remove the internal snap ring (15) and detent stopper (13).
6. Loosen the detent bolt (8) from spool (20) and then separate the spoolthe detent bolt.
7. Remove the plug (33) and take out the spring (31) and poppet (30).
8. Remove the check valve seat (25) assembly.
9. Remove the plug (39) and take out the shim (37), spring (36) poppet (35) and seat (34).
(When reassembling)
• Clean all parts with a suitable solvent, and dry with a lint-free cloth or air.
• Visually inspect all parts for signs of scoring of damage.
• Install the spool and spacer to the valve housing, using care not to damage the O-ring.

(4) Disassembling Hydraulic Cylinder

Cargo Lift Hydraulic Cylinder
1. Drain hydraulic oil from the cylinder, and carefully cramp the tube
end of the cylinder in a vise.
2. Push the end cap (2) to inside of cylinder tube (1).
3. Remove the internal snap ring (6).
4. Pull out the rod assembly (13) from the cylinder tube (1).
5. Carefully cramp the rod end in a vise.
6. Unscrew the nut (12), and remove the piston (9) and end cap (2)
from the rod (8).
(When reassembling)
• Visually inspect the cylinder tube (1) for signs of scoring or
damage.
• Visually inspect all parts for signs of scoring or damage.
• Insert the piston rod to the end cap, using care not to damage the
wiper seal (7) and end seal (3).
• Insert the rod assembly to the cylinder tube, using care not to
damage the piston seal on the piston.
• Install the end cap to the cylinder tube, using care not to damage
the O-ring on the cylinder head.
Cargo lift hydraulic cylinder
Tightening torque
piston mounting nut
(1) Cylinder Tube
(2) End Cap
(3) End Seal
(4) End O-ring
(5) Backup Ring
(6) Internal Snap Ring
(7) Wiper Seal
7-S10
HYDRAULIC SYSTEM
120 to 170 N·m
12.2 to 17.3 kgf·m
88.5 to 125.4 lbf·ft
(8) Rod
(9) Piston
(10) Piston O-ring
(11) Piston Seal
(12) Piston Nut
(13) Rod Assembly
W1015191
KiSC issued 03, 2008 A