1942 - 1947 CHEVROLET SHOP MANUAL

Section 12 - Electrical System

12-15
NOTE-Never use sandpaper or emery cloth to clean the contact points.
REVERSE POLARITY
If the polarity of the generator is reversed, the circuit breaker contact points will vibrate and burn. To make sure the generator has the correct polarity after connecting it with the regulator. momentarily connect a jumper lead between the generator (GEN) terminal and the battery (BAT) terminal of the regulator before starting the en­gine. The momentary surge of battery current to the generator will correctly polarize the generator.
RADIO BY-PASS CONDENSER
The installation of radio by-pass condensers of too high capacity on the field terminal of the regu­lator or generator will cause the current and volt­age regulator contact points to oxidize. Oxidized points cause a high resistance and may result in a low charging rate and a discharged battery. DO NOT CONNECT RADIO BY-PASS CONDENS­ERS TO THE FIELD TERMINAL OF THE REGULATOR OR GENERATOR other than as furnished with the short wave radio set, which is .01 mmfd. capacity.
If a condenser has been installed to the field
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Fig. 30-Generator Parts Layout
1     Pulley
2    Fan (Part of Pulley)
3    Frame, Drive End
4    Field Frame
5    Band
6    Frame with Pins, Commutator End
7    End Frame Cover Gasket
8    Commutator End Frame Cover
9 Through Bolts
17
Nut
13
Washer
19
Spacer Collar
20
Retainer
21
Felt Washer
22
Bearing
23
Retainer Plate Gasket
24
Retainer Plate
25
Key
26
Armature
27
Terminal Stud and Lead
28
Insulation Washer
29
Flat Washer
30
Lockwasher
31
Nut
32
Brushes
33
Brush Arm
34
Brush Spring
10
Pole Shoes
11
Field Coils
12
Stud
13
Insulation Washer
14
Flat Washer
15
Lockwasher
16
Nut

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