Weichai America Corp.
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3 Crank-rod mechanism
3.1 Assembly and disassembly of crank-rod mechanism.
3.1.1 Exploded view of crank-rod mechanism.
Fig. 3-1 Exploded view of crank-rod mechanism
3.1.2 Steps to disassemble crank-rod mechanism
1. Check before disassembling. Check connecting rod axial backlash, check tightening torque of
connecting rod bolts; Tilt and lay the engine on its side, rotate the flywheel until the to-be
removed piston is in BDC, remove connecting rod bolts and cap; Rotate the flywheel until the
to-be removed piston is in TDC, knock the piston out with wooden hammer, proceed with
caution to avoid jamming cylinder block with connecting rod tip. Remover other pistons in
the same way, number and place them orderly.
2. Screw off fastening bolts of torque vibration damper and fastening bolts of hub, take down
crankshaft pulley, torque vibration damper and hub.
3. Screw off flywheel bolts, take down flywheel assembly, bearing, etc.
3.1.3 Steps to assemble crank-rod mechanism
Assembling steps are contrary to disassembling ones.
3.2 Assembly and disassembly of crankshaft system
3.2.1 Exploded view of crankshaft system
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