wiring JEEP DJ 1953 Owner's Guide

H

ELECTRICAL
SYSTEM H-15L SERVICE
DIAGNOSIS

SYMPTOMS

Battery
Discha
rged: Shorted
Cell
in Battery......... Short in Wiring..
•
Generator Not Charging ,
Loose or Dirty Terminals
Excessive Use of Starter Excessive Use of Lights...... Insufficient Driving.........

Low
Regulator
Setting.......

Stuck
Cut-out in Regulator. ..

Low
Electrolyte
Level
in Cells

Alternator:
FAILS
TO
CHARGE:
Belt Loose Open or High Resistance in

Charging
or Ground Return
Circuit
or Battery Connections............
Excessively Worn, Open, or
Defective
Brushes.
Open Isolation
Diode.

Open Rotor (Field
Coil)

LOW
OR
UNSTEADY
CHARGING RATE:
Belt Loose.... Intermittent or High Resistance
Charging
or Ground Return
Circuit
or Battery Connections
Excessively Worn, Sticky, or Intermittent Brushes
Shorted or Open Rectifier
Diode
Grounded
or Shorted
Turns
in Rotor (Field
Coil)

Open,
Grounded, or Shorted
Turns
in
Stator

EXCESSIVE
CHARGE RATE:
Loose Connections on Alternator...........

Faulty
Regulator

NOISY
ALTERNATOR:
Defective
or Badly Worn Belt
Misaligned Belt or Pulley
Loose Pulley
Worn
Bearings.
Shorted Rectifiers

Generator:
Low
Charging Rate—
Dirty
Commutator
Poor Brush Contact.
................
Regulator Improperly Adjusted.......

High
Resistance in Charging
Circuit...
Ground
Strap Engine to Frame Broken
Loose or Dirty Terminals Slipping Generator Belt

Worn
Out Brushes

Weak
Brush Spring Tension..........

Out
of Round Commutator
PROBABLE REMEDY

Replace Battery

Check
Wiring
Circuit

Inspect Generator and Fan Belt
Clean
and Tighten

Tune
Engine

Check
Battery
Recharge Battery
Correct
Setting

Correct
Add
Distilled Water
Tighten to
Specifications
Test
and Correct
Test
Brushes and Replace if Necessary

Test
and Replace if Necessary
Test
and Replace if Necessary
Tighten to
Specifications

Test
and Correct
Test
and Replace if Necessary
Test
and Replace if Necessary

Test
and Replace if Necessary

Test
and Replace if Necessary

Check
and Correct

Check
and Correct
Replace

Align,
Replace Parts as Necessary Tighten Replace Bearings as Necessary
Test
and Replace as Necessary

Clean
Commutator
Repair
or Install New Brushes

Adjust

Clean
and Tighten Terminals Replace

Clean
and Tighten

Adjust
Belt
Install
New Brushes
Replace
Repair
220

'Jeep*
UNIVERSAL
SERIES SERVICE
MANUAL

H
H-151.
SERVICE
DIAGNOSIS—Continued

SYMPTOMS PROBABLE
REMEDY

Generator:
(continued)
Fails
To Charge-Open Charging Circuit Correct
Sticking Brushes Repair or Replace
Dirty
or Burned Commutator ... Clean Commutator
Grounded Commutator Replace
Open Circuit in Field Replace
Weak Soldering on Armature. . . Repair Grounded Wiring Repair

Defective
Regulator. .. Replace Regulator
Too High Charging Rate— Regulator Improperly Adjusted Adjust or Replace
Short in Armature Replace Grounded Field-to-regulator Wire Correct
Shorted
Cell
in Battery... Replace Battery

Starting
Motor: Slow Starter Speed— Discharged Battery or Shorted
Cell
Recharge or Repair
Ground
Strap Engine to Frame. Clean Terminals and Tighten
Loose or Dirty Terminals Clean and Tighten
Dirty
Commutator Clean with No. 00 Sandpaper

Worn
Out Brushes Install New Brushes
Weak Brush Spring Tension Replace

Worn
Bearings Replace Burned Starter Switch Contacts Replace Switch

Will
Not
Turn
Engine— Open Circuit at Starter Correct

Solenoid
Open or Stuck Replace
Solenoid
Starter Switch
Defective
Replace Switch
Starter Drive Broken or Stuck. Repair or Replace
Battery Discharged Recharge Battery

Distributor:
Hard
Starting— Distributor
Points
Burned or Pitted Clean
Points
or Replace (Adjust)

Breaker
Arm Stuck on Pivot Pin...... . ... . . . Clean and Lubricate

Breaker
Arm Spring Weak Replace

Points
Improperly Adjusted Adjust
Spark
Plug
Points
Improperly Set Adjust

Spark
Plug Wire Terminals in Distributor
Cap
Corroded Clean
Loose Terminals Check Circuit
Loose or Dirty Terminals on Ground Strap— Engine to Frame. Clean and Tighten
Condenser Faulty Replace Improper Ignition Timing Set Timing

Lights:
Burn
Dim— Loose or Dirty Terminals....... ........ Clean and Tighten
Leak
in Wires. Check Entire Circuit for Broken Insulation
Poor Switch Contact Install New Switch Poor Ground Connection Clean and Tighten

Aim
Headlamp Beams. Use Aiming
Chart
221

H

ELECTRICAL
SYSTEM
H-151.
SERVICE
DIAGNOSIS—Continued

SYMPTOMS
PROBABLE REMEDY

Horn
Fails
to Sound:
Broken
or Loose
Electrical
Connection Check Wiring and Connections at Horn Button and
Battery—Clean
and Tighten
Battery Low or Dead Check Battery Contact Points Burned or Broken Off. Replace Parts Necessary

Horn
Sounds Unsatisfactory Tone: Poor
Electrical
Connection Check Connections at Horn, Horn Button, Battery Battery Low Check with Hydrometer Loose Cover and Bracket Screws Tighten Bracket Bolts at Horn
Voltage at Horn too High or too Low Check with Voltmeter 222