Cooling Fan/Crankshaft Front Extension
TR2/3/3A/4/4A
When refitting the fan blade assembly to the crankshaft hub/extension, care should be exercised to re-install any balance weights that were removed during dis-assembly. Close inspection of the hub, fan and balance weight will reveal a 1/16″ hole drilled through all of these components in the assembled position at the factory. Alignment of all components with this drilling will ensure correct balance is maintained.