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WEICHAI WD12 - Page 35

WEICHAI WD12
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33
Note:
Coat combustion chamber
Coat small end bore of connecting rod, piston pin and its bore with
lubricating oil.
The sequence of assembling piston rings is: helical spring oil ring,
taper-face ring, trapezoidal barrel-face ring.
Note:
Pay attention to the sequence of assembling piston rings and
upward mark. The small face of taper-face ring faces up, and “TOP” face
of trapezoidal ring faces up.

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