Slip Rings/Rear Bearing; Removal; Installation - MerCruiser GM4 Service Manual

Slip Rings/Rear Bearing

Removal

1. Unsolder wires and carefully unwind them from
slip ring terminals.
IMPORTANT: Do not damage rotor wires when re-
moving slip rings or bearing.
2. Install a universal puller plate between bearing
and slip rings. Insert a 10 x 1 in. cap screw into
opening of slip ring assembly.
b
a
a - Universal Plate Puller
b - Cap screw
c - Slip Rings
3. Using an arbor press, push against cap screw to
remove slip rings.
4. Install a universal puller plate under bearing.
5. Using an arbor press, remove bearing.
Index
4C - 30 - CHARGING SYSTEM
c
73095

Installation

1. Press new rear bearing all the way onto rotor shaft
(until inner race contacts shoulder) with an arbor
press and a bearing driver that contacts inner
bearing race only, as shown. Use extreme care to
prevent damage to field winding leads.
IMPORTANT: Be sure to support rotor on end of
shaft and not on pole pieces, as pole pieces are
only press-fit onto shaft.
a
b
a - Arbor Press
b - Bearing Driver
c - Bearing
d - Rotor
2. Insert wires through hole in slip rings as shown.
c
d
73096
73097
90-816462 2-695