Weichai America Corp.
7
housing, gear housing and oil pan
2.1.3 Dismantling
1.
Remove the crankcase around the bolt;
2.
Remove the main bearing bolts;
3.
Remove the seal
；
4.
Remove the main oil duct plug
；
5.
Remove cylinder liner.
2.1.4 Assembling
Assembling steps are contrary to disassembling ones.
2.1.5 Service Key point
1.
Assembling: Crankcase around the tight bolt tightening torque were
：
8.8 bolts, tightening
torque of 22N · m ~ 29N · m; 10.9 bolts, tightening torque 29N · m ~ 35N · m;
2.
Assembling: cylinder liner should be carefully checked before assembly, To see if there are
cracks and clean cylinder liner, the use of special tooling into the cylinder bore, press the
outer surface of the front cylinder coating molybdenum powder, cylinder liner protruding
amount
（
0.05~0.10
）
mm.
3.
Check the body of the processing surface, the processing surface should be no glitches, oil,
bump and so on, with Whetstone, sandpaper towels, etc. removed
；
4.
Check the body of the oil, waterways, cavities and other places without iron, burrs, flash, etc.,
with air gun, iron brush to remove clean;
5.
Requires no sealing surface sealing.
2.2
Steps to Assemble and disassemble Engine Block Module
2.2.1 Exploded View of Engine Block Module
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
