Ce-niehoff-co C651/C654 Troubleshooting Guides Manual de usuario descargar pdf

Page 1

TG0010C

Table of Contents

Section 1: Wiring Diagram ....................................... 2

Section 2: Basic Troubleshooting ............................ 3

Section 3: Advanced Troubleshooting ................. 4 – 7

Battery Conditions

Until temperatures of electrical

system components stabilize, these

conditions may be observed during cold start voltage tests.

• Maintenance/low maintenance battery:

— Immediately after engine starts, system volts

are lower than regulator setpoint with medium

amps.

— 3-5 minutes into charge cycle, higher system

volts and reduced amps.

— 5-10 minutes into charge cycle, system volts

are at, or nearly at, regulator setpoint, and

amps are reduced to a minimum.

— Low maintenance battery has same charac-

teristics with slightly longer recharge times.

• Maintenance-free battery:

— Immediately after engine start, system volts are

lower than regulator setpoint with low amps.

— 15-30 minutes into charge cycle, still low volts

and low amps.

— 15-30 minutes into charge cycle, volts increase

several tenths. Amps increase gradually, then

quickly to medium to high amps.

— 20-35 minutes into charge cycle, volts increase

to setpoint and amps decrease.

• High-cycle maintenance-free battery:

— These batteries respond better than standard

maintenance-free. Charge acceptance of these

batteries may display characteristics similar to

maintenance batteries.

NOTICE

Hazard Definitions

These terms are used to bring attention to presence of hazards

of various risk levels or to important information concerning

product life.

Indicates presence of hazards

that will or can cause minor

personal injury or property damage if ignored.

Indicates special instructions

on installation, operation or

maintenance that are important but not related to

personal injury hazards.

CAUTION

NOTICE

600 Series Troubleshooting Guide

for C651 and C654 Alternators

Charge Volt and Amp Values

The volt and amp levels are a function of the battery-

state of charge. If batteries are in a state of discharge,

as after extended cranking time to start the engine,

the system volts, when measured after the engine is

started will be lower than the regulator set point and

the system amps will be high. This is a normal condi-

tion for the charging system. The measured values of

system volts and amps will depend on the level of

battery discharge, in other words, the greater the

battery discharge level the lower the system volts and

higher the system amps will be. The volt and amp

readings will change and system volts reading will

increase up to regulator set point and the system

amps will decrease to low level (depending on other

loads) as the batteries recover and become fully

charged.

• Low Amps: A minimum or lowest charging system

amp value required to maintain battery state of

charge, obtained when testing the charging system

with a fully charged battery and no other loads

applied. This value will vary with battery type.

• Medium Amps: A system amps value which can

cause the battery temperature to rise above the

adequate charging temperature within 4-8 hours of

charge time. To prevent battery damage the charge

amps should be reduced when battery temperature

rises. Check battery manufacturer’s recommenda-

tions for proper charge amps rates.

• High Amps: A system amps value which can cause

the battery temperature to rise above adequate

charging temperature within 2-3 hours. To prevent

battery damage the charge amps should be

reduced when the battery temperature rises.

Check battery manufacturer’s recommendations

for proper charge amp rates.

• Battery Voltage: Steady-state voltage value as

measured with battery in open circuit with no

battery load. This value relates to battery-state of

charge.

• Charge Voltage: A voltage value obtained when the

charging system is operating. This value will be

higher than battery voltage and must never exceed

the regulator voltage set point.

• B+ Voltage: A voltage value obtained when mea-

suring voltage at battery positive terminal or

alternator B+ terminal.

• Surface Charge: A higher than normal battery

voltage occurring when the battery is removed from

a battery charger. The surface charge must be

removed to determine true battery voltage and

state of charge.

• Significant Magnetism: A change in the strength

or intensity of a magnetic field present in the

alternator rotor shaft when the field coil is ener-

gized. The magnetic field strength when the field

coil is energized should feel stronger than when

the field is not energized.

• Voltage Droop or Sag: A normal condition which

occurs when the load demand on the alternator is

greater than rated alternator output at given rotor

shaft RPM.

1 2 3 4 5 6 7 8

Indice de contenidos

Pagina 1

Page 1TG0010CTable of ContentsSection 1: Wiring Diagram ... 2Section 2: Basic Troubleshooting ...

Pagina 2 - Section 1: Wiring Diagram

Page 2TG0010CSection 1: Wiring DiagramCEN C651 and C654 AlternatorsDescription and OperationC651 28 V (240 A)/14 V (100 A) and C654 28 V(260 A) /14 V

Pagina 3

Page 3TG0010CD. Basic Troubleshooting1. Inspect charging system componentsfor damageCheck connections at B– cable, B+ cables,and regulator harness. Re

Pagina 4 - A2-306 Regulator

Page 4TG0010CA2-306 RegulatorDESCRIPTION AND OPERATIONA2-306 Regulator with OVCO is attached directlyto the outside of alternator.Main diagnostic feat

Pagina 5 - ➀ in Figure 3 on page 4

Page 5TG0010CSection 3: Advanced Troubleshooting(CONT’D)YesNoSystem is overloaded. Check forexcessive draw fromaccessories.With engine running, measu

Pagina 6

Page 6TG0010C(CONT’D)Section 3: Advanced TroubleshootingYesNoWith engine off, is battery voltage present at alternator 14 V B+ terminal?Chart 3 – No

Pagina 7

Page 7TG0010CTest for battery voltage at both alternator 28 V and 14 V B+ terminals. Doesbattery voltage exist at both terminals?YesNoRepair vehicle w

Pagina 8

Page 8TG0010CIf you have questions about your alternator or any of these test procedures, or if you need to locate a Factory Authorized Service Distri

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