WEICHAI WD10 Service Manual - 44 Crank-Rod Mechanism
Service Manual for WD10 Diesel Engine
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44 Crank-Rod Mechanism
441 Disassembly and Assembly of Crank-Rod Mechanism
4411 Exploded View of Crank-Rod Mechanism
Piston-rod assembly
Crankshaft
Flange
Crankcase
Main bearing shell
Pulley
Damper
Flywheel
Flywheel bolt
Flywheel ring gear
Crankshaft
timing gear
Pulley bolt
Engine block
Flywheel housing
Bearing
Main bearing bolt
Connecting rod big end cap
Fig. 4-32 Exploded view of crank-rod mechanism
4412 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 big end. Remover other pistons in
the same way, number and place them orderly.
(2) Screw off front end pulley bolts, take down the pulley and damper.
(3) Screw off flywheel bolts, take down flywheel assembly, bearing, etc.
4413 Steps to Assemble Crank-Rod Mechanism
Assembling steps are contrary to disassembling ones.