9
7. C Spool Valve Assembly and Sleeve Assembly
7.1 Removal
▪
Remove the 6 retainer bolts from the valve body, and
remove the valve body. [Fig.7.1]
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Remove the 8 cap A and cap B retainer bolts, and remove
cap A, cap B, packing, plain washer, cushion and gasket.
[Fig.7.2]
▪
Draw out the C spool valve assembly, and remove the seal
ring from the C spool valve assembly.
▪
Remove the sleeve using the sleeve remover (special tool:
Part number 713148). [Fig.7.3]
7.2 Inspection
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C Spool Valve Assembly
Seal ring [Fig.7.4]
Measure the inside thick diameter, and if it is outside the
usable range, replace the C Spool Valve Assembly.
If the seal ring is worn out or cracked, replace C Spool
Valve Assembly.
Usable range of Seal ring
2.94 ~ 3.02 mm
▪
Sleeve Assembly [Fig.7.5]
Measure the inside diameter, and if it is outside the usable
range, replace the sleeve assembly.
Usable range of Sleeve
Ø
18.63 ~
Ø
18.65 mm
▪
O rings
If the O ring is worn out or cracked, replace it.
<NOTE>
▪
C Spool Valve Assembly and Sleeve Assembly must be
replaced complete set. Unable to replace individual
component
7.3 Installation
For installation, see [Exploded View] on the separate sheet and install in the reverse order of disassembly.
Tightening torque for installation Cap A, Cap B
6 N•m
Tightening torque for Valve body installation bolts
7.5 N•m
<NOTE>
▪
Make sure there is no dust on the seal surface and it is not
damaged.
▪
Install the sleeve at the center of the valve body. At this
point, apply lubricating oil around the sleeve and O ring.
