THE BLOWER RESISTER MAY BE WIRED INCORRECTLY Caterpillar

THE BLOWER RESISTER MAY BE WIRED INCORRECTLY

Usage:

THE BLOWER RESISTER MAY BE WIRED INCORRECTLY

CONFIDENTIAL TIBU2689-00

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TECHNICAL INFORMATION BULLETIN	DECEMBER 10, 2003
WHEEL TRACTOR ARTICULATED TRUCK EJECTOR ARTICULATED TRUCK	621G (CEN1-UP), 623G (CES1-UP), 627G (CEX1-UP), 631G (CLR1-UP), 637G (CEH1-UP); 725 (AFX1-UP), 730 (AGF1-UP), 735 (AWR1-UP), 740 (AXM1-UP); 740 (AZZ1-UP)
Component Code(s)	7320

SUBJECT: THE BLOWER RESISTER MAY BE WIRED INCORRECTLY

PROBLEM:

Blower resistor may be wired incorrectly causing blower speeds to be out of sequence.

SOLUTION:

Test for this condition by turning on blower and progressing through the speeds from low speed to high speed. If incorrectly wired, the MEDIUM LOW speed will be above the Medium speed.

Rewire the resistor as per the following illustration.

COPYRIGHT 2003 CATERPILLAR
ALL RIGHTS RESERVED

Caterpillar Information System:

2ND REDUCTION FINAL DRIVE BEARINGS MAY FAIL PREMATURELY 2ND REDUCTION FINAL DRIVE BEARINGS MAY FAIL PREMATURELY

030-7965 ELBOW MAY BE MISSING FROM RADIATOR GROUP 030-7965 ELBOW MAY BE MISSING FROM RADIATOR GROUP

THE HOSE THAT CONNECTS THE CASE TO THE TRANSMISSION MAY NOT SEAL PROPERLY THE HOSE THAT CONNECTS THE CASE TO THE TRANSMISSION MAY NOT SEAL PROPERLY

THE ALTERNATOR PULLEY MAY BE ASSEMBLED INCORRECTLY THE ALTERNATOR PULLEY MAY BE ASSEMBLED INCORRECTLY

Logged Codes Must Be Cleared During Pre-delivery Inspections Logged Codes Must Be Cleared During Pre-delivery Inspections

Some 2P-4472, 7G-0825, and 8P-1656 Clutch Plates May Have Been Shipped Into the Parts System Before Finish Grinding Some 2P-4472, 7G-0825, and 8P-1656 Clutch Plates May Have Been Shipped Into the Parts System Before Finish Grinding

Two Lubrication Holes Have Been Omitted In the 7S-8580 Rotation Clutch Carrier Two Lubrication Holes Have Been Omitted In the 7S-8580 Rotation Clutch Carrier

192-9969 BEARING AND 192-9970 BEARING MAY HAVE BEEN MANUFACTURED INCORRECTLY 192-9969 BEARING AND 192-9970 BEARING MAY HAVE BEEN MANUFACTURED INCORRECTLY

THE MAGNETS ON THE 178-5062 MAGNETIC SCREEN MAY LOOSEN IN OPERATION THE MAGNETS ON THE 178-5062 MAGNETIC SCREEN MAY LOOSEN IN OPERATION

Spark Arrestor Muffler Failure Spark Arrestor Muffler Failure

Support Bracket for the Rotary Beacon Interferes With the Cab Support Bracket for the Rotary Beacon Interferes With the Cab

HYDRAULIC TANK FILLER TUBE STRAINER MAY RUST HYDRAULIC TANK FILLER TUBE STRAINER MAY RUST

2ND REDUCTION FINAL DRIVE BEARING MAY FAIL PREMATURELY 2ND REDUCTION FINAL DRIVE BEARING MAY FAIL PREMATURELY

NEW SHIPPING CONFIGURATION FOR 769D/771D OFF-HIGHWAY TRUCKS NEW SHIPPING CONFIGURATION FOR 769D/771D OFF-HIGHWAY TRUCKS

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THE BUSHING IN THE PIVOT BORE MAY MOVE AND PREVENT LUBRICATION OF THE BORE THE BUSHING IN THE PIVOT BORE MAY MOVE AND PREVENT LUBRICATION OF THE BORE

THE 154-8237 BEARING, WHICH IS USED IN THE INPUT PLANETARY, MAY NOT ASSEMBLE CORRECTLY THE 154-8237 BEARING, WHICH IS USED IN THE INPUT PLANETARY, MAY NOT ASSEMBLE CORRECTLY

3V-0197 BOLTS MAY NOT HAVE THE PROPER HEAT TREATMENT 3V-0197 BOLTS MAY NOT HAVE THE PROPER HEAT TREATMENT

110-2445 HOSE CLAMP MAY HAVE BEEN OMMITTED AT ASSEMBLY OF THE FUEL TANK 110-2445 HOSE CLAMP MAY HAVE BEEN OMMITTED AT ASSEMBLY OF THE FUEL TANK

STRIKER ASSEMBLY ADJUSTMENT STRIKER ASSEMBLY ADJUSTMENT

Certain D5N and D6N Track-Type Tractors Were Shipped Without the Knee Pad Certain D5N and D6N Track-Type Tractors Were Shipped Without the Knee Pad

THE BOLTED JOINTS OF THE TRANSMISSION MAY LOOSEN THE BOLTED JOINTS OF THE TRANSMISSION MAY LOOSEN

THE ORIFICE MAY BE MISSING FROM THE BRAKE LINES GROUP THE ORIFICE MAY BE MISSING FROM THE BRAKE LINES GROUP