MerCruiser 305 CID (5.0L) Service Manual page 876

SERVICE MANUAL NUMBER 24
Checks Made With Propeller Shaft Removed From Boat
1. Check propeller shaft for straightness. Check at three or four places. If dial indicator
deflects over .004 in. (0.1 mm), replace shaft.
2. Check that bore of coupling is 90 degrees from coupling flange. Replace coupling if
needle moves.
Strut
Refer to boat manufacturer's service manual for alignment and replacement. Normally, the
shaft should be centered in the cutlass bearing. Shims (placed between the strut and hull)
are used to align the strut to the shaft.
Index
90-861327--1 OCTOBER 1999
a - V-Blocks
b - Dial Indicator
c - Shaft - Rotate One Complete Turn
a - V-Blocks
b - Dial Indicator
c - Coupling Flange - Rotate One Complete Turn
d - Shaft Against Block To Prevent Fore And Aft Movement
a - Strut
b - Cutlass Bearing
DRIVE SHAFT / PROPELLER SHAFT MODELS
b
a
d
c
a
b
a
b
c
71091
Page 8D-17