PRODUCT SUPPORT PROGRAM FOR POSSIBLY REPLACING THE NOX SENSOR HARNESS BRACKET ON CERTAIN G3512 AND G3516 NSPS ENGINES Caterpillar


PRODUCT SUPPORT PROGRAM FOR POSSIBLY REPLACING THE NOX SENSOR HARNESS BRACKET ON CERTAIN G3512 AND G3516 NSPS ENGINES

Usage:

REBE5854-00

16Aug2010


U-325
A-255
D-279
O-283

 
Before/After
  
  

PRODUCT SUPPORT PROGRAM FOR POSSIBLY REPLACING THE NOX SENSOR HARNESS BRACKET ON CERTAIN G3512 AND G3516 NSPS ENGINES

1408 1900
PS43143
NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS43143" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.


TERMINATION DATE

31Aug2011

PROBLEM

The existing NOx Sensor Harness Bracket does not provide sufficient support, which may result in NOx sensor failure due to vibration on certain G3512 and G3516 NSPS engines.

AFFECTED PRODUCT

Model Identification Number
G3512 WPP01500-01532

WPR01500-01524
G3516 WPT01500-01529

WPW01500-01977

PARTS NEEDED

Qty

Part Number Description
1 0S1594 BOLT
2 5M2894 WASHER-HARD
1 9S8752 NUT-FULL
3 9X6772 STRAP-CABLE
1 3044209 SENSOR GP-NOX (After Failure Only)
1 3179109 SHIELD
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

Inspect the NOx sensor bracket to confirm it has not been updated to the integrated bracket and harness support.

- If the bracket has already been updated, no further action is necessary.

- If the original bracket has not been updated, replace the bracket with the updated bracket. The original bracket design needs to be replaced with the new and improved integrated bracket.

NOTE: This program does not cover multiple bracket replacements on the same unit, or the replacement of the NOx sensor for bracket updates performed before sensor failure.

SERVICE CLAIM ALLOWANCES

Product smu/age whichever comes first
Caterpillar
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
0-40000 hrs,
0-60 mo 
100.0%
100.0%
0.0%
0.0%
0.0%
0.0%
 NOTE: This is a 1.0-hour job
Cost of the NOx sensor will not be reimbursed if this program is performed before sensor failure.



PARTS DISPOSITION

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
 
 
 


Rework Procedure


 
1. Shut the engine down and allow to cool. Remove all power to the engine following local lock out tag out procedures. Remove the cable straps holding the NOx sensor harness to the existing bracket (2). Refer to Image1.1.1. Remove the 307-7362 Shield(1) and the 308-3825 Bracket (2). Retain the mounting hardware and ladder clip for later use, the shield and bracket will not be reused.
Image1.1.1
 
2. Refer to Image1.2.1. Install the integrated 317-9109 Shield (1) with the mounting hardware removed in the previous step. Tighten the mounting hardware to a torque of 47 +/- 9 Nm (34 +/- 6 lb ft).

3. Install the ladder clip (2) removed in Step 1 to the shield as shown in Image1.2.1 with 0S-1594 Bolt, 5M-2894 Washers, and 9S-8752 Nut. Tighten to a torque of 25 +/- 6 Nm (18 +/- 4 lb ft). Route and secure the NOx sensor harness with 9X-6772 Cable straps as shown. Refer to REHS3411 for recommended NOx sensor harness slack or NOx sensor replacement.
Image1.2.1
 
3. Remove all lock out tag out procedures where used.
 
 

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