One Piece Propeller Shaft Phasing Correction
An out of phase single-piece propeller shaft is very unusual. If the
shaft is visibly out of place, the end yokes are welded on in the wrong position,
or the shaft is damaged due to twisting, the propeller shaft requires replacement.
Multiple-Piece Propeller Shaft Phasing Correction
There are two possible causes for an out of phase multiple-piece propeller
shaft:
- Inspect the shaft to see if it is visibly out of place, the end
yokes are welded on in the wrong position, or the shaft is damaged due to
twisting. If any of these conditions apply, the propeller shaft requires
replacement.
- If the propeller shaft assembly has no visual physical defects
and the propeller shaft phasing inspection procedure indicated that the propeller
shafts were out of phase, perform the following:
2.1. | Remove the yoke from the spline shaft and determine if it is possible
to correct the out of phase condition by reinstalling the yoke on a different
position on the spline shaft. |
2.2. | If it is possible to reinstall the yoke on a different position
on the spline shaft, determine the correct location, reinstall the yoke to
the spline shaft, and reinspect the phasing of the propeller shafts. |
2.3. | If it is not possible to reinstall the yoke on a different position
on the spline shaft and the propeller shaft phasing inspection procedure indicated
that the propeller shafts were out of phase, the defective propeller shaft
requires replacement. |