TM 5-3820-233-12/2
d. Generator Brush Replacement.
4-36. Electrical System
(1) Loosen screw and slide cover band for- ward.
a. The DC battery-charging circuits consist of a
(2) Remove brush terminal screw, lift brush arm
generator, regulator, battery and wiring. Refer to figure
and remove brush. Repeat for other brushes.
(3) Lift brush arm and install new brush. Secure
together, produce current for the electrical equipment on
lead with screw. Repeat for other brushes, always
the machine, except for the marker lamps, which are
replace complete set.
only used when prime mover is towing the crusher (fig.
(4) Seat brushes using a seating hone or No. 00
sandpaper.
the entire electrical system. A defect in one component
(5) Position cover band and tighten screw.
can cause damage to another.
CAUTION
4-37. Generator
a. Removal.
Polarize generator as instructed in paragraph
(1) Refer to figure 3-3A and remove the
generator fan belts.
(2) Refer to figure 4-22 and remove the
generator.
b. Inspection.
(1) Inspect for cracked or broken housing.
(2) Inspect electrical receptacle connector and
elbow for cracked or broken position.
(3) Check brushes for excessive wear.
c. Installation. Install generator in reverse order of
removal.
Figure 4-23. Generator brush replacement.
ME 3820-233-12/2-4-22
4-38. Generator Regulator
1. Cable
12.
Bolt
a. General.
2. V-belt
13.
Spacer
(1) The generator regulator is a water- tight,
3. Fan and pulley assembly 14.
Bracket
dust proof, fungus and corrosion resistant unit. This unit
4.Bolt
15.
Bolt
is used only with generators having an externally
5. Lockwasher
16.
Spacer
grounded field circuit.
6. Washer
17.
Bolt
(2) The three unit regulator consists of a cutout
7. Spacer
18.
Lockwasher
relay, a voltage regulator and a current regulator
8. Bolt
19.
Washer
mounted in a single assembly.
9. Bolt
20.
Strap
(3) The cutout relay is designed to close the
10. Lockwasher
21.
Generator
circuit from the generator to the battery when generator
11. Nut
voltage is sufficient to charge the battery, and to open
the circuit when the generator slows or stops.
Figure 4-22. Generator, removal and installation.
4-21
