Serial 0B721206 Thru 0D805068 - Alpha Drives

Backlash Indicator 91-8M0053505

Checks the gear backlash on the Alpha drive units using 14/28 tooth count and gear housing.

Supercedes: 91-78473

Backlash Indicator Rod 91-53459

Checks the gear backlash on the TR, TRS, MC-1, R-MR, Alpha One and Alpha One Gen II drive units.

Bearing Adaptor Installation Tool 91-18605A2.

Presses the reverse gear bearing adaptor into the gear housing of the Alpha One and Alpha One Gen II counter rotating gear cases.

Supersedes: 91-18605A1

Supercedes: 91-18605A1

Bearing Carrier Retainer Nut Wrench 91-61069T

Removes and installs the bearing carrier retainer nuts on the MC-1, R-MR, Alpha One, Alpha One Gen II and Bravo One drive units.

Supercedes: 91-59553, 91-61069

Bearing Cup Driver 91-33493T

Installs the upper drive shaft bearing cup in the drive shaft housing of the MC-1, R-MR and Alpha One drive units

Supercedes: 91-33493

Bearing Cup Driver 91-34379T

Installs the drive shaft bearing cup in gear the housing of the MC-1, R-MR and Alpha One drive units

Supercedes: 91-34379

Bearing Cup Driver 91-36577T

Installs the forward gear bearing cup in the gear housing of the MC-1, R-MR, Alpha One and Alpha One Gen II with bearing cup diameter of 3.500 in. 89 outside diameter (O.D.)

Supercedes: 91-36577

Bearing Cup Driver 91-38918T

Installs the bearing cup in the top cover of the drive shaft housing of the MC-1, R-MR and Alpha One drive units.

Supercedes: 91-38918

Bearing Cup Driver 91-808053T

Use to install a new smaller outside diameter top cover bearing on the Alpha One Gen II drive units.

Supercedes: 91-808053

Bearing Driver 91-32325T

Installs the gimbal bearing in the MC-1, R-MR, Alpha One, Alpha One Gen II, Blackhawk and all Bravo drive units. Use with 91-30366T1 Gimbal Bearing Installation Collar Number 3.

Supercedes: 91-32325

Bearing Driver 91-33489

Installs the small roller bearing in the gimbal housing of the MC-1, R-MR and Alpha One drive Units.

Bearing Installation Tool 91-38628T

Installs the pinion bearing on the MC-1, R-MR and Alpha One drive units.

Supercedes: 91-38628

Bearing Retainer Wrench 91-17256

Removes and installs the drive shaft bearing retainer on the MC-1, R-MR, all Alpha drive units, Blackhawk and all Bravo (excludes Bravo X Series) drive units.

Key Features:

• Installs exhaust bellows on MC-I, R-MR, Alpha One, Bravo One and Two and Blackhawk drive units

Interchanges/Replaces

Mallory

• 9-79811

Mercury Marine

• 91-45497A1

Bellows Expander Tool replaces MerCruiser part # 91-45497A1

Scissor handle with vinyl grip & opens with screw lock

Installs exhaust bellows on MC-1 / R / MR / Alpha One / Alpha One Gen II, Bravo, & Blackhawk drive units

Bushing Installation Tool 91-805057A2

Installs the shift shaft upper bushings in the R-MR, Alpha One and earlier models of the Alpha One Gen II transom assembly.

Dial Indicator Adaptor Kit 91-83155

Attaches the dial indicator to the gear case when checking backlash on MC-1, R-MR, Alpha One Gen II, Bravo One, Bravo Two and Bravo Three drive units.

Dial Indicator Holding Tool 91-89897

Secures the dial indicator to gear housing when checking backlash on the TR, TRS, MC-1, R-MR and Alpha One drive units.

Drive Gear Shimming Tool replaces MerCruiser part # 91-60523

Measures upper drive gear clearance on MC-1 / R / MR / Alpha One / Alpha One Gen II

Drive Gear Shimming Tool replaces MerCruiser part # 91-60526T

Measures upper drive gear clearance on MC-1 / R / MR / Alpha One / Alpha One Gen II