Electrical System and Instruments
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REMOVING DRIVE END
BEARING
-
Fig. 18
1.
Remove the voltage regulator (1).
2.
Remove the diode carrier (5).
3. Mark the relative positions of the slip ring end
bracket (6), laminations of stator (7) and drive
end bracket (8).
4.
Place an old fan belt around the pulley (9) and
clamp the belt in vice jaws with the pulley as
close to the vice as possible. The friction and
self wrapping action of the belt will provide
adequate reaction to loosening the pulley nut
(10).
5. Remove the assembly from the vice, remove
the nut, spring washer
(11),
spacer (12) and
pulley (9).
6. Remove the spacer, washer, fan (13), washer,
key (14) and spacer.
7. Remove the nuts, washers and through bolts
(15).
8. Separate the drive end bracket (8) from the
stator (7), slip ring end bracket (6) and rotor
assembly (16). Withdraw the stator (7) from
the slip ring end bracket (6).
9. With suitable levers remove rotor (16) from slip
ring end bracket (6). Fig
19.
10.
Remove the three bolts (19) and washers
securing the bearing retainer to the drive end
bracket (8) and press out the bearing (20).
REPLACING
1.
Pack the new bearing with grease.
2.
Place the bearing (20) in the drive end bracket
(8) with shielded side towards the rotor (16).
3. Re-fit the bearing retainer (19) and three bolts
and washers.
TO REASSEMBLE ALTERNATOR
Refitting is a reversal of the dismantling
procedures with attention to the following points:
1.
Align the marks made on dismantling when
assembling the end brackets (6 and 8) and
stator (7).
2.
Tighten the through bolts (15) evenly and
check that the rotor (16) turns freely in its
bearings (20 and 17) before fitting the voltage
regulator (1).
3. Ensure the insulating washer is fitted over the
main output terminal before fitting diode
carrier (5).
MBQ)
1.
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