Alternator Service
Disassembly and Inspection
1. Remove the a
lternator from the engine (see Alterna-
tor Removal and Installation in the External Engine
Component Repair section of Chapter 4 - Mitsubishi
Diesel Engine).
2. Remove the three through bol
ts (Fig. 51).
3. Use a solder iron to heat the rear
bracket around the
rear bearing to 120 - 140
o
F (50 - 60
o
C). Separate the
front and rear brackets by prying with a screwdriver
blade inserted between the brackets.
IMPORTANT: Be careful not to insert the blade too
far causing damage to the windings.
4. Put the rotor in a vise. Remove pulley nut and pull
off
the pulley and spacer.
5. Pull the rotor assembly from the front bracket.
6. Unsolder the
stator core lead wires. Remove the
stator assembly.
IMPORTANT: To prevent damage to the diodes, heat
the stator core lead wires only long enough to re-
move.
7. Disconnect the capaci
tor from terminal “B”.
8. Loosen the screws securing the rectifier and remove
t
he rectifier.
4
5
2
3
1
8
9
10
7
6
Figure 51
1. Pulley 5. Rear bearing 9. Rectifier assembly
2. Front bracket assembly 6. Stator 10. Rear bracket assembly
3. Front bearing 7. Terminal set assembly
4. Rotor assembly 8. Regulator assembly
Reelmaster
®
5100-D Page 5 - 41 Repairs
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