CHAPTER 5 REPAIR OF ELECTRICAL AND HYDRAULIC COMPONENTS

CHAPTER 5

REPAIR OF ELECTRICAL AND HYDRAULIC COMPONENTS

Section I. REPAIR OF ELECTRICAL COMPONENTS

5-1. General

(3) Place the rotor (8) in a vise and tighten just

enough to permit removal of the shaft nut (2).

The electrical system of the truck is used to supply

Remove the shaft nut (2), washer (3), pulley (4).

power for starting and turning the engine. It also

fan (5) and collar (6).

supplies power for the lights and instruments on the

(4) Separate the rotor (8) from the drive end.

truck.

removing key (7).

5-2. Alternator

(5) Remove retainer (10). collar (11), gasket

a. Removal. Refer to TM 10-3930-024-12 for

(12), and bearing (13) from end frame (14).

the alternator removal procedure.

(6) Remove stator (15) from end frame (46).

b. Disassembly. (fig. 5-1.)

(7) Remove end frame bearing (16) and

(1) Remove the four thru-bolts (1) from the

retainer (17) from end frame (46). Place a piece of

tape over the bearing and over the slip ring

assembly on the rotor shaft.

Note. Place a scribe mark on the stator (15) and end

(8) Remove brush holder (32). brushes (33),

frames (14 and 46) to aid in locating the parts in the same

position during reassembly.

and springs (34).

(9) Remove capacitor (38) diodes (43 and 44)

(2) Separate the drive end frame (14) and the

and heat sink (45) from end frame (46). If diode

rotor assembly (8) from the stator assembly (15).

replacement is necessary, refer to sub-paragraph c.

Pry them apart at the stator slot with a screwdriver.

5-1