Ce-niehoff-co N1617/N3264/N2013 Troubleshooting Guides User Manual download pdf

Page 1

TG82A

Table of Contents

Section A: Component Description ..................... 2 – 3

Section B: On-vehicle Troubleshooting ............... 4 – 5

Indicates special instructions on

installation, operation or mainte-

nance that are important but not

related to personal injury hazards.

NOTICE

Troubleshooting Guide

for N1617 Alternator

Testing Guidelines

Professional service technicians rely on the following

guidelines when testing electrical components.

Voltage testing:

• Set meter to proper scale and type (AC or DC).

• Be sure to zero the meter scale or identify the meter

burden by touching meter leads together. Meter bur-

den must be subtracted from final reading obtained.

• Be sure the meter leads touch source area only.

Prevent short circuit damage to test leads or source

by not allowing meter leads to touch other pins or

exposed wires in test area.

Voltage drop testing:

• Measure voltage between B+ on alternator or source

and B- (ground) on alternator or source. Record

obtained reading. Move to batteries or other source

and measure again between B+ and B- terminals on

battery or other source. Difference between the two

readings represents voltage lost within the circuit

due to but not limited to inadequate cable gage or

faulty connections.

• Voltage drop measurements must be taken with

all electrical loads or source operating.

Before troubleshooting any CEN products, the service technician should:

• read, understand, and agree to follow all information contained in this troubleshooting guide.

• understand the operational characteristics of the electrical charging system components to be tested.

• be proﬁ cient at the use of tools and test equipment used in troubleshooting CEN products.

WARNING

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 hazard(s) that

can cause severe personal injury,

death, or substantial property

damage if ignored.

Indicates presence of hazards that

will or can cause minor personal

injury or property damage.

CAUTION

When testing field coil or stators,

most shorts to ground will measure

0-100 ohms. Test readings may also

show higher, other than OL, typi-

cally in the megaohm range, when

windings are dust-covered, wet,

or oily from environment. Be

sure to distinguish between

defective readings and surface

debris readings when determin-

ing the test results.

Resistance (ohm) testing:

• Set meter to proper scale.

• Be sure to zero the meter scale or identify the meter

burden by touching meter leads together. Meter bur-

den must be subtracted from final reading obtained.

• Be sure the meter leads touch source area only.

Prevent altering the reading by not allowing fingers

or body parts to touch meter leads or source during

reading.

• Be sure reading is taken when source is at 70ºF.

Readings taken at higher temperatures will increase

the reading. Conversely, readings taken at lower

temperatures will decrease the reading.

• Be sure to test directly at the source. Testing through

extended harnesses or cable extensions may increase

the reading.

Dynamic/Live testing:

Definition: Connecting power and ground to a

component to test operation/function out of circuit.

1. Be sure to connect jumper leads directly and securely

to source contacts of the component being tested.

2. Be sure to make any connection to power and ground

at the power supply or battery source terminals. Do

not make connection at component source terminals

as that may create an arc and damage component

source terminals.

1 2 3 4 5

Summary of Contents

Page 1 - Troubleshooting Guide

Page 1TG82ATable of ContentsSection A: Component Description ... 2 – 3 Section B: On-vehicle Troubleshooting ... 4 – 5

Page 2 - CEN N1617

Page 2TG82ASection A: Component DescriptionCEN N1617Alternator Description and OperationN1617 570 A 28 V alternator is internally rectified. All windi

Page 3 - (CONT’D)

Page 3TG82ASection A: Component Description (CONT’D)N2013 Battery Isolator Description and OperationN2013 battery isolator used with this charging sys

Page 4

Page 4TG82ASection B: On-vehicle TroubleshootingTools and Equipment for Testing• Digital Multimeter (DMM)• Ammeter (digital, inductive) Perform on-

Page 5

Page 5TG82ASection B: On-vehicle Troubleshooting (CONT’D)Chart 2: No Alternator Output – Test Charging Circuit• TEST MEASUREMENTS ARE TAKEN ON HARNES

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Ce-niehoff-co N1617/N3264/N2013 Troubleshooting Guides User Manual

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