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Basic Tools Required

Below is a list of some basic tools required to disassemble a MerCruiser outdrive.  Additional tools are available for removing/installing bearings, seals and shimming the gears.

1968 - 1983 Pre-Alpha Drives

upperspannerwrench.jpg (11358 bytes)Upper spanner wrench to remove the 3 7/8 inch retainer nut behind the u-joints.

 

 

driveshaftadapter.jpg (107305 bytes)Drive shaft adaptor tool for turning the lower vertical drive shaft to remove the pinion nut. A 7/8 open end wrench can be use to hold the nut on the bottom. 

 

shiftshaftbushingtool.jpg (30623 bytes)Shift shaft bushing tool used to remove the shift shaft bushing in the lower unit.

 

 

 

lowercarrierwrench4.jpg (105553 bytes)Lower bearing carrier retainer nut tool. This is used to unscrew the 4 3/8 carrier nut located in the lower unit behind the propeller.

 

 

 

1984 - 1991 Alpha One Drives

upperspannerwrench.jpg (11358 bytes)Upper spanner wrench to remove the 3 7/8 inch retainer nut behind the u-joints.

 

 

driveshaftadapter.jpg (107305 bytes)Drive shaft adaptor tool for turning the lower vertical drive shaft to remove the pinion nut. A 7/8 open end wrench can be use to hold the nut on the bottom. 

 

shiftshaftbushingtool.jpg (30623 bytes)Shift shaft bushing tool used to remove the shift shaft bushing in the lower unit.

 

 

 

nutunderwaterpumptool.jpg (58013 bytes)Wrench to remove the 2 5/16 retainer nut below the water pump on 1984 - Date.

 

 

lowercarrierwrench4.jpg (105553 bytes)Lower bearing carrier retainer nut tool. This is used to unscrew the 4 3/8 carrier nut located in the lower unit behind the propeller

 

 

 

1992 - Date Alpha One Generation II Drives

upperspannerwrench.jpg (11358 bytes)Upper spanner wrench to remove the 3 7/8 inch retainer nut behind the u-joints.

 

 

driveshaftadapter.jpg (107305 bytes)Drive shaft adaptor tool for turning the lower vertical drive shaft to remove the pinion nut. A 7/8 open end wrench can be use to hold the nut on the bottom. 

 

nutunderwaterpumptool.jpg (58013 bytes)Wrench to remove the 2 5/16 retainer nut below the water pump on 1984 - Date.

 

 

lowercarrierwrench4.jpg (105553 bytes)Lower bearing carrier retainer nut tool. This is used to unscrew the 4 3/8 carrier nut located in the lower unit behind the propeller

 

 

 

1988 - Date Bravo Drives

 

upperspannerwrench.jpg (11358 bytes)

Upper spanner wrench to remove the 4 inch retainer nut behind the u-joints.

 

 

driveshaftadapter.jpg (107305 bytes)

Drive shaft adaptor tool for turning the lower vertical drive shaft to remove the pinion nut on Bravo 1 & 2 drives. An open end wrench can be use to hold the nut on the bottom. 

 

lowercarrierwrench4.jpg (105553 bytes)

Lower bearing carrier retainer nut tools. These tools are used to unscrew the carrier nut located in the lower unit behind the propeller on Bravo 1, Bravo XR and Bravo 2 drives.

 

 

bravopropwrench.jpg (94172 bytes)

Bravo 3 prop wrench is used on the larger ( 2 3/4 ) nut which holds the first prop.

 

 

 

1973 - 1993 TR & TRS Drives

 

trbrgholder2.jpg (41940 bytes)

 

Upper bearing holder for removing and installing the universal joint nut.

 

 

driveshaftadapter3.jpg (134554 bytes)This is a drive shaft adaptor kit.  It is used to provide a wrench surface to turn the vertical drive shafts located in both the upper and lower housings on TR & TRS outdrives.

The T-Handle wrench is used to turn the serrated nut in the upper housing while setting the bearing pre-load on the vertical upper drive shaft.

 

lowercarrierwrench4.jpg (105553 bytes)

Lower bearing carrier retainer nut tool. This is used to unscrew the 4 3/8 carrier nut located in the lower unit behind the propeller on TRS drives and the 5 1/8 carrier nut on TR drives.

 

 

 

 

 
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Shelby Township, MI

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  Last modified: September 11, 2009 
 

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