Clutch Crankcase Clearance Check; Clutch Housing Clearance Reading - Husqvarna TC449 Workshop Manual

H01986
H01833
H01834
ENGINE DISASSEMBLY/REASSEMBLY
Clutch housing clearance check
• Fit clutch housing (1) with needle roller bearing cage and hub (2).
• Fit nut (3).
Tightening torque figures
Clutch hub on crankshaft
Collar nut, M20 x 1.5 - 10.9,
Replace microincapsulated
screw nut
Check
• Try to overturn clutch housing in the direction of the arrow.
Result: Perceptible clearance.
Action:
=> Replace clutch housing seat (crankcase cover removed)

Clutch housing clearance reading

• Fit needle roller bearing cage (1), clutch housing (2), thrust washer (3), and
hub (4).
• Fit nut (5).
Tightening torque figures
Clutch hub on crankshaft
Collar nut, M20 x 1.5 - 10.9, Replace
microincapsulated screw nut
Check
• using a feeler gauge (2), read the axial clearance between clutch housing (1),
and axial needle roller bearing (3).
Technical specifications
Axial clearance
between clutch cage
and crankshaft
Result: Clearance outside tolerance values.
F1.28
120 Nm
120 Nm
Crankshaft rests
+0.05
0.3
- 0.05
onto alternator
side
1 edition (08-2010) _Rev. 11-2010
st
mm