Crankshaft; Crankshaft Straightness; Small End Bushing Replacement - Husqvarna 2011 TE 630 Workshop Manual

ENGINE OVERHAUL

Crankshaft

Main journals and crank pins should show no scoring or scuffing. Threads,
keyways and splines must be in good condition.
Clamp the shaft between centres and check that crank pins run concentric using
a dial gauge (maximum runout allowed 0.02 mm).

Crankshaft straightness

STANDARD MAX WEAR LIMIT
less than 0.03 mm
0.05 mm
(0.012 in)
(0.0019 in)

Small end bushing replacement

You will need an appropriate punch and a press to change the bushing. Smear
the outer face of the bushings with moly grease before installation.
The bushing should be mounted with an interference fit of: 0.049-0.095 mm
(0.00196-0.0038 in.) Match the oil holes of the new bushing with those in the
+0.022 +0.00088
connecting rod; ream the bushing bore to 20 mm ( 0.79 in ).
+0.012
+0.00048
Check bore concentricity as shown in the diagram.
Part. N. 8000 H2051 (02-2010) G.17