wsm M7040 - Hydraulic Cylinder

HYDRAULIC SYSTEM
M6040, M7040, WSM
8-S28
[5] HYDRAULIC CYLINDER
Removing Hydraulic Cylinder
1. Remove the lift rod pin (2).
2. Disconnect the hydraulic hose (3) from hydraulic cylinder (5).
3. Remove the cylinder cover (7).
4. Disconnect the return hose (6).
5. Remove the pin (upper) (1) and pin (lower) (4).
6. Take out the hydraulic cylinder (5).
NOTE
• Take care not to damage the grease nipples when remove
the hydraulic cylinder.
(When reassembling)
• Apply grease to the grease nipples.
• Take care not to damage the grease nipples when reassemble
the hydraulic cylinder.
9Y1210143HYS0032US0
Disassembling Hydraulic Cylinder
1. Remove the liquid gasket from top of head (2).
2. Slightly tap-in the head (2) to inside, and remove the internal
circlip (5) by using the small screwdriver.
3. If the internal circlip (5) cannot be removed by above-mentioned
method, remove it by the following procedure.
• Carefully clamp the cylinder tube (4) in a vise.
• Drill approx. 2.5 mm (0.1 in.) diameter hole on the cylinder
tube (position "A") just over the internal circlip (5) as shown
in figure.
• Use a small screwdriver and remove the internal circlip (5).
Simultaneously support this action by pushing from the
outside of the cylinder tube with another small screwdriver
or similar tool.
4. Remove the rod (1) and head (2).
5. Inject the compressed air through the oil inlet port of the cylinder
tube (4), and remove the piston (3).
6. Remove the external circlip (6), and remove the head (2).
(When reassembling)
• Apply transmission fluid to the piston (3), head (2) and cylinder
tube (4).
• Take care not to damage the O-ring, backup ring and seal.
• Apply liquid gasket (Three Bond 1206C or equivalent) to the top
of head (2), while pressing the head (2) against internal circlip
(5).
• After reassembling the cylinder, be sure to close the drilled hole
by liquid gasket.
9Y1210143HYS0033US0
Tightening torque Cylinder hose retaining nut
45.1 to 53.0 N·m
4.6 to 5.4 kgf·m
33.3 to 39.1 lbf·ft
(1) Cylinder Pin (Upper)
(2) Lift Rod Pin
(3) Hydraulic Hose
(4) Cylinder Pin (Lower)
(5) Hydraulic Cylinder
(6) Return Hose
(7) Cylinder Cover
(1) Rod
(2) Head
(3) Piston
(4) Cylinder Tube
(5) Internal Circlip
(6) External Circlip
A: Position for drilling
L: 6.0 mm (0.236 in.)
KiSC issued 07, 2012 A