Komatsu ecot3 PC300LC-8 Shop Manual page 969

50 Disassembly and assembly
Assembly
Only the precautions for assembling the travel PPC
valve assembly are described.
a When assembling, clean and inspect the parts
closely and take care fully so that dirt, rust,
flaw, etc. will not cause a trouble.
a When installing piston (7), apply grease (G2-
LI) to its outside and the inside of the body
hole.
a Install spring (4) with its small diameter side on
the shim (3) side.
q Diameter of spring (Inside diameter)
Small diameter side: 4.9 mm, Large diam-
eter side: 5.55 mm
a Assemble shaft (14) in the following procedure.
1) Using tool M4, insert bushing (10) in case.
a Insert the bushing (10) from the 10°
chamfered side.
a Insert bushing so that dimension (a)
will be as follows.
q Dimension (a): 20.4 ± 0.3 mm
a Do not drive the bushing with direct
impact loads of a hammer etc.
PC300, 350-8
2) Using tool M5, insert busing (11) in case.
a Insert the bushing (11) from the 10°
chamfered side.
a Insert bushing (11) so that dimension
(b) will be as follows.
q Dimension (b): 0 mm
a Do not drive the pin with direct impact
loads of a hammer etc.
3) Insert lever (15).
4) Insert shaft (14).
5) Using tool M6, insert pin (13).
a Insert pin (13) so that dimension (c)
will be as follows.
q Dimension (c): 0 – 0.5 mm
a Do not drive the pin with direct impact
loads of a hammer etc.
SEN02639-02
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