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
1984 - 1991 Alpha One Drives
1992 - Date Alpha One Generation II Drives
1988 - Date Bravo Drives
Upper spanner wrench to remove the 4 inch retainer nut behind the u-joints.
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.
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.
Bravo 3 prop wrench is used on the larger ( 2 3/4 ) nut which holds the first prop.
1973 - 1993 TR & TRS Drives
Upper bearing holder for removing and installing the universal joint nut.
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.
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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