Mercury 150 EFI Service Manual page 555

LEFT HAND NON-RATCHETING
REVERSE GEAR AND BEARING CUP ADAPTOR REASSEMBLY
1. With reverse gear teeth facing down, use mandrel (91-86943) to press propeller shaft
needle bearing (NUMBERS/LETTERS UP) into reverse gear until short shoulder on
mandrel bottoms on reverse gear.
NOTE: If gear housing has been replaced or inspection determines that reverse gear
bearing adapter must be replaced, assemble and install as follows:
2. Place reverse gear roller bearing (NUMBER/LETTERS UP) in press. Using suitable
mandrel, press bearing cup adapter onto reverse gear bearing.
a -
b -
c -
d -
e -
g -
IMPORTANT: The appearance of the forward and reverse gear is almost identical.
There are two ways to distinguish between the reverse and forward gears. The re-
verse gear has a shorter hub and it has a smaller inner diameter needle bearing
bore.
a -
b -
c -
d -
Page 6B-34
Reverse Gear Teeth
Mandrel (91-86943)
Propeller Shaft Needle Bearing
Shoulder
Mandrel
f - Bearing Cup Adapter
Reverse Gear Roller Bearing
d d
a
a
Reverse Gear
Forward Gear
Shorter Length Hub
Smaller Diameter Bearing Bore
b
b
a
e
d
d
c
c
b
f
a
a
51883
c
c
b
b
g
c
50885
90-883728 JULY 2001