Cub Cadet Challenger Series Service Manual page 135

The crankshaft (1) and the crank
•
pin (2) oil passageways must be
properly aligned with a tolerance of
less than 1mm or 0.04in.
Caution:
The buffer boss and woodruff key
should be replaced whenever removed
from the crankshaft.
Install
Assemble the oil pump
•
Inner rotor
Outer rotor
Oil pump shaft
(With the recommended lubricant)
Install the crankshaft and balancer
Note:
Hold the connecting rod at Top dead
Center (TDC) with one hand while
turning the nut of the adjusting tool
with the other. Tighten until the
crankshaft bottoms against the bearing.
Engine
4‐39