Delco Remy Alternator Wiring Diagram
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Delco Remy Alternator Wiring Diagram

28si installsion instructions 10524210.aspx
GROUND SCREW (-) (Two Locations) 5.6-6.8 N-m (50-60 lb in)
28SI ALTERNATOR INSTALLATION INSTRUCTIONS WARNING!!!!ALWAYS USE PROPER EYE PROTECTION WHEN PERFORMING ANY MECHANICAL REPAIRS TO A VEHICLE

- INCLUDING, BUT NOT LIMITED TO, ANY INSTALLATION AND OR REPAIRS TO THE DELCO REMY ALTERNATORS.

FAILURE TO USE PROPER EYE PROTECTION CAN LEAD TO SERIOUS AND PERMANENT EYE DAMAGE.Only perform the mechanical functions that you are properly qualified to perform.

Mechanical repairs that are beyond your technical capabilities should be handled by a professional installation specialist.

DANGER!!! To avoid injury or damage, always disconnect the negative cable at the battery before removing or replacing the alternator.

The alternator output terminal is always live (hot).

If the battery is not disconnected, a tool accidentally touching this terminal and ground can quickly get hot enough to burn skin or damage tools and surrounding parts.FOLLOW ENGINE OR VEHICLE MANUFACTURERS INSTRUCTIONS FOR REMOVING THE OLD ALTERNATOR FROM THE ENGINE AND INSTALLING THE NEW ALTERNATOR.NOTICE!

This is an extremely high output Alternator

Always ensure your application is equipped with the appropriate size and gauge of cable.

CHARGING LINE CABLE VOLTAGE DROP SHOULD NOT EXCEED 0.5 VOLTS (12V system), 1.0 Volts (24V system) (ALTERNATOR OUTPUT [B+] TERMINAL TO BATTERY POSITIVE TERMINAL AT FULL OUTPUT).

FOR OBTAINING ADDITIONAL WIRING INSTALLATION INFORMATION, SEE HEAVY DUTY APPLICATION MANUALS OR CONTACT A REMY INC.

REPRESENTATIVE.REMOVAL & INSTALLATION INSTRUCTIONS
Disconnect the negative (-) cable at the batteries.Identify and tag all leads when removing the old alternator and install them on the same terminals of the new alternator.Insure all leads are reconnected or contained where they cannot ground.

Torque all fasteners to values labeled in Figure 1 below.This alternator may have more terminals than the one being replaced had or used.

It will charge properly with only the battery and ground leads connected.

Use of the other terminals is optional based on need.

See TERMINAL DESCRIPTIONS, Pages 2 and 3.
FIGURE 1 - 28SI Alternator Torque Values

PULLEY INSTRUCTIONS:

Use pulley from old alternator if this alternator does not have a pulley or pulley supplied is different from the one on alternator being changing the pulley, keep the alternator shaft in the horizontal position and do not apply any pressure to end of the shaft.

Internal damage may occur if the shaft is pushed back and turned.

If there were spacers when the fan and pulley were removed, make sure all spacers are replaced when installing the pulley on this alternator.Hold the shaft by placing a hex wrench in the hexagonal hole in the shaft while removing or installing the pulley.

Tighten the pulley nut to 95-108 N-m (70-80 lb ft).

NOTICE - Only licensed Remy Inc.product and component parts should be used, and the use of other parts or modifications not approved by Remy Inc.will void all applicable warranties.

The failure to carefully follow these Installation Instructions, set forth above, will void all applicable warranties.
Delco Remyis a registered trademark of General Motors Corporation, licensed to Remy Inc., Pendleton, IN 46064.
2008 Remy Inc.
INSTRUCTION SHEET1052421026SE08 REV 1Battery (+) 9.0-11.3 N-m

(80 - 100 lb in)

USE PULLEY FROM OLD ALTERNATOR (SEE PULLEY INSTRUCTIONS BELOW)

REMOTE terminals)

1.72.8 N-m (15-25 lb in) 198 mm (7.8)

or

216 mm (8.5) AVAILABLE IN DELCO REMY STANDARD HINGE & LONG HINGE MOUNTING SIZES A PRODUCT OF REMY INC.

NOTICE!

DO NOT INSTALL

AN EXTERNAL FAN ON A

28SI ALTERNATOR

Ground point 28SI FEATURES HIGH OUTPUT: 100 (24V) 160 - 180 - 200 (12V) Ampere Ratings
REMOTE SENSE TECHNOLOGY THREE MOUNTING OPTIONS:

Pad, Delco Remy Standard Hinge 198mm (7.8 inch) & Long Hinge 216mm (8.5 inch)

BELT TENSIONING INSTRUCTIONS:

Improper belt tension can cause premature alternator failure.

If the belt must be tightened manually, place a wood block between the alternator and pry bar, as illustrated at right.

Pry as close to the center of the unit as possible.

Use a torque wrench to tighten mounting bolts to the proper torque as specified in vehicle or engine manufacturers specifications for belt tension and mounting bolts torque.

DO NOT OVER TIGHTEN BELT!FIGURE 2

TYPICAL WIRING DIAGRAM

3 Studs
TERMINAL DESCRIPTIONS (Alternator will function without connecting the S, I or

terminals)B+ Terminal Output terminal connects to the positive (+) battery terminal.S Remote Sense Terminal

Connect to system voltage at the battery or a common distribution point.R Terminal

Relay / Phase terminal carries half system voltage and may be used for certain types of control relays, charge indicators, tachometers or similar devices.

The current draw should not exceed four (4) amperes.

Frequency = Alternator RPM/10.

Notice!

The R Terminal is not the Remote Sense terminal

do not connect to B+!I Terminal - The Indicator lamp/ignition terminal can serve as a current source, sink or both, depending on how it is connected.

The diagram above shows one configuration.

Current capability is 1.0 Amp in either direction.Ground Screw

Ground lead ensures alternator is grounded and is strongly recommended for optimum performance.

If installing this alternator with Remote Sense terminal in a vehicle that does not have a sense line, connect a fused

(5 Amp) insulated wire from the Alternator Voltage Sense terminal to the positive (+) battery terminal or the common distribution point at the starter solenoid battery (+) terminal
delco remy alternator wiring diagram
Remy Brand Auto Parts - Huge Remy Selection In Stock.
1776 Howell Mill Rd Nw, Atlanta (delcoremy.com)
Alternators At Autozone | Autozone.com
Save 10% on your first order. (delcoremy.com)
28si Alternator Wiring Instructions
Find the Right Alternator for Your Vehicle. Locate a Store Near You. (autoelectricservice.net)
.

Connection of this terminal is best for optimu
40si installation instructions 10523421.aspx
GROUND SCREW (-) (Three Locations) 6.810.2 N-m (6090 lb in) Grd
40SI ALTERNATOR INSTALLATION INSTRUCTIONSWARNING!!!!ALWAYS USE PROPER EYE PROTECTION WHEN PERFORMING ANY MECHANICAL REPAIRS TO A VEHICLE

INCLUDING, BUT NOT LIMITED TO, ANY INSTALLATION AND OR REPAIRS TO THE DELCO REMYALTERNATORS.

FAILURE TO USE PROPER EYE PROTECTION CAN LEAD TO SERIOUS AND PERMANENT EYE DAMAGE.Only perform the mechanical functions that you are properly qualified to perform.

Mechanical repairs that are beyond your technical capabilities should be handled by a professional installation specialist.

DANGER!!! To avoid injury or damage, always disconnect the negative cable at the battery before removing or replacing the alternator.

The alternator output terminal is always live (hot).

If the battery is not disconnected, a tool accidentally touching this terminal and ground can quickly get hot enough to burn skin or damage tools and surrounding parts.FOLLOW ENGINE OR VEHICLE MANUFACTURERS INSTRUCTIONS FOR REMOVING THE OLD ALTERNATOR FROM THE ENGINE AND INSTALLING THE NEW ALTERNATOR.NOTICE!

This is an extremely high amperage output Alternator

Always ensure your application is equipped with the appropriate size and gauge of cable.

See Recommendation for Determining Appropriate Cable Size with the wiring diagram in Figure 2 to determine if installation is acceptable.

REMOVAL & INSTALLATION INSTRUCTIONS
Disconnect the negative (-) cable at the batteries.Identify and tag all leads when removing the old alternator and install them on the same terminals of the new alternator.Insure all leads are reconnected or contained where they cannot ground.

Torque all fasteners to values labeled in Figure 1 below.This alternator may have more terminals than the one being replaced had or used.

It will charge properly with only the battery and ground leads connected.

Use of the other terminals is optional based on need.

See TERMINAL DESCRIPTIONS, Page 2.
FIGURE 1 - 40SI Alternator Torque ValuesPULLEY INSTRUCTIONS:

Use pulley from old alternator if this alternator does not have a pulley or pulley supplied is different from the one on alternator being changing the pulley, keep the alternator shaft in a horizontal position and do not apply any pressure to end of the shaft.

Internal damage may occur if the shaft is pushed back and turned.

If there were spacers when the fan and pulley were removed, make sure all spacers are replaced when installing the fan and pulley on this alternator.

Hold the shaft by placing a hex wrench in the hexagonal hole in the shaft while removing or installing the pulley.

Tighten the pulley nut to 95-108 N-m (70-80 lb ft).

NOTICE - Only licensed Remy Inc.product and component parts should be used, and the use of other parts or modifications not approved by Remy Inc.will void all applicable warranties.

The failure to carefully follow these Installation Instructions, set forth above, will void all applicable warranties.
Delco Remyis a registered trademark of General Motors Corporation, licensed to Remy Inc., Pendleton, IN 46064.
2008 Remy Inc.
1

INSTRUCTION SHEET
10523421
30SE08 REV 040SI FEATURES HIGH OUTPUT:

240 - 275

300 Ampere Ratings
REMOTE SENSE TECHNOLOGY THREE MOUNTING OPTIONS:

Pad, Delco Remy Standard Hinge 198mm (7.8 inch) & Long Hinge 216mm (8.5 inch) BATTERY (+) 9.013.5 N-m

(80120 lb in)

USE PULLEY FROM OLD ALTERNATOR (SEE PULLEY INSTRUCTIONS BELOW)

REMOTE Terminals)

1.72.8 N-m (1525 lb in)

198 mm (7.8)

or

216 mm (8.5) AVAILABLE IN DELCO REMY STANDARD HINGE & LONG HINGE MOUNTING SIZES A PRODUCT OF REMY INC.

Grd BELT TENSIONING INSTRUCTIONS:

Improper belt tension can cause premature alternator failure.

If the belt must be tightened manually, place a wood block between the alternator and pry bar, as illustrated below.

Pry as close to the center of the unit as possible.

Use a torque wrench to tighten mounting bolts to the proper torque as specified in vehicle or engine manufacturers specifications for belt tension and mounting bolts torque.

DO NOT OVER TIGHTEN BELT!FIGURE 2

TYPICAL WIRING will function without
connecting the S, I

R terminals
RECOMMENDATION FOR DETERMINING APPROPRIATE CABLE SIZECHARGING LINE CABLE DROP SHOULD NOT EXCEED 0.5 VOLTS (ALTERNATOR OUTPUT [B+] TERMINAL TO BATTERY POSITIVE TERMINAL AT FULL OUTPUT).

FOR OBTAINING ADDITIONAL WIRING INSTALLATION INFORMATION, SEE HEAVY DUTY APPLICATION MANUALS OR CONTACT A REMY INC.REPRESENTATIVE.

REMOTE SENSE TECHNOLOGY senses the voltage level at the batteries or similar location where battery system voltage can be read and adjusts alternator output.A direct connection from the alternators Remote Sense terminal to the battery provides improved system voltage readings and optimizes state of charge.(Go to www.delcoremy.com

for a more descriptive explanation of Remote Sense technology)

TERMINAL DESCRIPTIONS (Alternator will function without connecting the S, I or

terminals)POS Terminal Output terminal connects to the positive (+) battery terminal.R Terminal - Relay terminal carries half system voltage and may be used for certain types of control relays, charge indicators, tachometers or similar devices.

The current draw should not exceed four (4) amperes.

Frequency = RPM/6.67.Notice!Do not install the Remote Sense terminal lead to this terminal.

I Terminal - The Indicator lamp/ignition terminal carries full system voltage.

Current draw should not exceed one (1) ampere.

It is recommended that current is not drawn from this terminal.

Ground Screw

Ground lead ensures alternator is grounded and is strongly recommended for optimum performance.

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