Weichai America Corp.
10
Pos.
Name
Pos.
Name
Pos.
Name
1
Engine block
3
Bolt of main bearing
5
Cap of main bearing
2
Cap of thrust main bearing
4
Bolt of main bearing
2.2.2
step to disassemble Engine Block
1)
Remove main bearing bolts (key point 1);
2)
Remove main bearing caps (key point 2);
2.2.3
Steps to assemble engine block
Reverse disassembly procedure to assemble engine block
2.2.4
Inspect and repair engine block
key point 1:
Inspection:
Check and clean engine block. Including but not limited to: Assembly environment must be clean;
check engine block finished surfaces for crash damage, scratch and rust; do not bump and scratch the
parts during assembling, and besides special requirements, sharp corner and edge on parts must be
smoothed.
Installation:
For 4-cylinder engine, 10 of M14
－
10.9 main bearing bolts are used to fix the bearings. As shown in
Fig.
below, tighten from the middle bolts, and then move to two ends alternately, follow the procedures
below: pre-tighten each bolt to 70Nm, then turn the bolts for further 90°±4°.
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