Ce-niehoff-co N1601/N1602/N1603/N1604 Troubleshooting Guides Bedienungsanleitung PDF herunterladen

Page 1

TG29D

Table of Contents

Section A: Wiring Diagrams ............................... 2 – 3

Section B: Basic Troubleshooting ............................4

Section C: Advanced Troubleshooting .............. 5 – 10

Hazard Definitions

These terms are used to bring attention to presence of hazard(s)

of various risk levels or to important information concerning

product life.

Indicates presence of hazard(s) that

will or can cause minor personal

injury or property damage.

Indicates special instructions on

installation, operation or mainte-

nance that are important but not

related to personal injury hazards.

CAUTION

NOTICE

N1601, N1602, N1603, and N1604

Alternator Troubleshooting Guide

C.E. Niehoff & Co.

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, amps are medium.

— 3–5 minutes into charge cycle, system volts

increase, amps decrease.

— 5–10 minutes into charge cycle, system volts

increase to, or near, regulator setpoint and amps

decrease to a minimum.

— Low maintenance battery has same characteristics

with slightly longer recharge times.

• Maintenance-free Battery

— Immediately after engine starts, system volts are

lower than regulator setpoint, low charging amps.

— Once charge cycle begins, low volts and low amps

are still present.

— After alternator energizes, voltage will increase

several tenths. Amps will increase gradually, then

quickly, to medium to high amps.

— F i n a l l y, v o l t s w i l l i n c r e a s e t o s e t p o i n t a n d a m p s w i l l

decrease.

The time it takes to reach optimum voltage and amper-

age will vary with engine speed, load, and ambient

temperature.

• High-cycle Maintenance-free Battery

These batteries respond better than standard mainte-

nance-free. Charge acceptance of these batteries may

display characteristics similar to maintenance batteries.

• AGM (Absorbed Glass Mat) Maintenance-free Battery

These dry-cell batteries respond better than standard

maintenance-free. If battery state of charge drops to

75% or less, batteries should be recharged to 95% or

higher separately from the engine’s charging system to

avoid damaging charging system components and to

provide best overall performance. Charge acceptance of

these batteries may display

characteristics similar to

maintenance batteries.

NOTICE

Battery Charge Volt and Amp Values

Volt and amp levels fluctuate depending on the battery

state of charge. If batteries are in a state of discharge—as

after extended cranking time to start the engine—system

volts will measure lower than the regulator setpoint after

the engine is restarted and system amps will measure

higher. This is a normal condition for the charging system;

the greater the battery discharge level, the lower the system

volts and the higher the system amps. The volt and amp

readings will change as batteries recover and become fully

charged: system volts will increase to regulator setpoint

and system amps will decrease to low level (depending on

other loads).

• Low Amps: 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: System amps value which can cause

the battery temperature to rise above adequate charg-

ing 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 recommendations for proper charge

amp rates.

• High Amps: System amps value which can cause

the battery temperature to rise above adequate charg-

ing temperature within 2-3 hours of charge time. To

prevent battery damage, the charge amps should be

reduced when battery temperature rises. Check battery

manufacturer’s recommendations for proper charge

amp rates.

• Battery Voltage: Steady-state voltage value as mea-

sured with battery in open circuit with no battery load.

This value relates to battery state of charge.

• Charge Voltage: Voltage value obtained when the

charging system is operating. This value will be higher

than battery voltage and must never exceed the regula-

tor voltage setpoint.

• B+ Voltage: Voltage value obtained when measuring

voltage at battery positive terminal or alternator B+

terminal.

• Surface Charge: Higher than normal battery voltage

occurring when the battery is disconnected from

battery charger. The surface charge must be removed

to determine true battery voltage and state of charge.

• Significant Magnetism: Change in strength or intensi-

ty of a magnetic field present in alternator rotor shaft

when the field coil is energized. The magnetic field

strength when the field coil is energized should feel

stronger than when the field is not energized.

• Voltage Droop or Sag: Normal condition occurring

when the load demand on alternator is greater than

rated alternator output at given rotor shaft RPM.

1 2 3 4 5 6 7 8 9 10

Inhaltsverzeichnis

Seite 1 - C.E. Niehoff & Co

Page 1TG29DTable of ContentsSection A: Wiring Diagrams ... 2 – 3Section B: Basic Troubleshooting ...

Seite 2 - Section A: Wiring Diagrams

Page 10TG29DIf you have questions about your alternator or any of these test procedures, or if you need to locate a Factory Authorized Service Dealer,

Seite 3 - J1939 connector

Page 2TG29DSection A: Wiring DiagramsCEN N1601, N1602, N1603, N1604Alternator and Regulator Description and OperationThe alternators listed below are

Seite 4

Page 3TG29DFigure 3 — N1601-1 thru -4, N1603-1/-2, and N1604-1/-2 Wiring DiagramFigure 2 — N1604Alternator and Regulator Terminals Section A: Wiring

Seite 5 - Advanced Troubleshooting

Page 4TG29DSection B: Basic TroubleshootingBasic Troubleshooting1. Inspect charging system components for damage Check connections at B– cables, B+

Seite 6

Page 5TG29DSection C: Advanced TroubleshootingN3223 RegulatorDESCRIPTION AND OPERATIONN3223 regulator with OVCO is attached directly to the outside of

Seite 7

Page 6TG29DSection C: Advanced Troubleshooting (CONT’D)Shut off engine. With key off, engine off: Test for battery voltage at alternator 28 V B+ termi

Seite 8

Page 7TG29DSection C: Advanced Troubleshooting (CONT’D)Chart 2 – N3118 and N3223 only – No 14 V Alternator Output – Test Charging CircuitFigure 7 – Ph

Seite 9

Page 8TG29DSection C: Advanced Troubleshooting (CONT’D)YesNoAlternator is defective.Unplug alternator-to-regulator 4-socket harness from regulator. Co

Seite 10

Page 9TG29DSection C: Advanced Troubleshooting (CONT’D)Test for battery voltage across and diagonally between both alternator B+ terminals and alterna

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