Gear Housing Reassembly; Pinion Bearing Installation; Forward Gear Bearing Installation - Mercury 25 EFI Service Manual

Gear Housing
2. Inspect the driveshaft for grooves where the water pump base oil seals contact the shaft. Replace the driveshaft if grooves
are found.

Gear Housing Reassembly

Pinion Bearing Installation

1. Install the Bearing Installation Tool into the driveshaft bore.
2. Apply Premium Gear Lubricant to the inside diameter and outside diameter of a new pinion bearing and install the pinion
bearing (numbers/letters face up) onto the Bearing Installation Tool shaft.
3. Use the appropriate retainer from the Bearing Installation Tool kit to hold the pinion bearing onto the tool shaft.
4. With the flange of the installation tool against the gearcase surface, turn the nut on the tool shaft until the shaft is drawn up
against the flange. The pinion bearing will then be seated at the proper height. Remove the retainer and the Bearing
Installation Tool assembly from the driveshaft bore.
Tube Ref No.
82
Premium Gear Lubricant
Bearing Installation Tool

Forward Gear Bearing Installation

1. Place forward gear shim onto forward gear.
Page 6A-28
a
17022
a
c
b
e
g
h
16249
Description
© 2016 Mercury Marine
a - Water pump oil seal surface
a - Puller shaft
b - Nut (part of Bearing Installation Tool)
c - Washer (part of Bearing Installation Tool)
d
d - Flange (part of Bearing Installation Tool)
e - Collar
f - Guide
g - Pinion bearing
h - Retainer (part of Bearing Installation Tool)
f
Where Used
Inside diameter and outside diameter of pinion bearing
91‑895195001
90-8M0105568 eng MARCH 2016
Part No.
92-858058K01