Crankshaft Wear Check; Connecting Rod Wear Check; Crankshaft Replacement - Husqvarna TC449 Workshop Manual

H01929
H01930
ENGINE DISASSEMBLY/REASSEMBLY

Crankshaft wear check

• Check crankshaft support pin (arrows).
Result: Support pins are damaged or worn.
Action:
• Replace crankshaft with connecting rod.

Connecting rod wear check

• Check connecting rod for damages and wear
• Measure connecting rod bearing clearance. Lock crankshaft in vertical posi-
tion and, using a dial gauge, read the max. possible bearing clearance (A).
Technical specifications
Connecting rod axial
clearance
Result: Damaged connecting rod or bearing clearance outside tolerance val-
ues.
Action:
• Replace crankshaft with connecting rod.

Crankshaft replacement

• Always replace crankshaft as any microcracks could not be detected.
F1.78
0.80...0.90 mm
1 edition (08-2010) _Rev. 11-2010
st