PRODUCT IMPROVEMENT PROGRAM FOR REPLACING P-FRAME CIRCUIT BREAKER SUPPORTS ON CERTAIN C32 AND 3508 GENERATOR SETS Caterpillar


PRODUCT IMPROVEMENT PROGRAM FOR REPLACING P-FRAME CIRCUIT BREAKER SUPPORTS ON CERTAIN C32 AND 3508 GENERATOR SETS

Usage:

REBE1119-00

03Jan2007


U-6
A-6
D-6
O-6

 
Priority
  
  

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING P-FRAME CIRCUIT BREAKER SUPPORTS ON CERTAIN C32 AND 3508 GENERATOR SETS

4461
PI31209
NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31209" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI31209" as the Part Number, "7751" as the Group Number, "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.


COMPLETION DATE

TERMINATION DATE

31Jul2007 31Jan2008

PROBLEM

Supports 252-7451 and 252-7486 are too thick and prevent proper thread engagement on the nuts.

AFFECTED PRODUCT

Model Identification Number
3508  ZAB00117
3508B  ZAD00121
C32  SXC00318-00325, 358-359

PARTS NEEDED

Qty

Part Number Description
1 2965556 SUPPORT
1 2965557 SUPPORT
4 9X8256 WASHER

ACTION REQUIRED

If the package is equipped with a 252-7495 breaker panel gp, replace 252-7451 support with a 296-5556 support. Replace 252-7486 support with a 296-5557 support. The new supports have counter bored holes to allow for correct thread engagement.

OWNER NOTIFICATION

U.S. and Canadian owners will receive the attached Owner Notification.

SERVICE CLAIM ALLOWANCES

Caterpillar
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
100%
100%
0%
0%
0%
0%

 NOTE: This is a 1.0-hour job


PARTS DISPOSITION

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
 
 
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
 
 
 
COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REPLACING P-FRAME CIRCUIT BREAKER SUPPORTS

MODELS INVOLVED - Certain C32 and 3500 Generator Sets

Dear Caterpillar Product Owner:


Existing supports for the P-frame circuit breaker are too thick and prevent proper thread engagement on the nuts. New supports with counter bored holes need to be installed on the products listed below. You will not be charged for the service performed.

Contact your local Caterpillar dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.

Please refer the dealer to their Service Letter dated 03Jan2007 when scheduling this service.

We regret the inconvenience this may cause you, but urge you to have this service performed as soon as possible to prevent unscheduled downtime.



Caterpillar Inc.

Identification #(s)



Attached to 03Jan2007 Service Letter


Rework Procedure


 
Refer to SEBU8088 Operation and Maintenance Manual and the following instructions:

1. On packages with rear extension boxes use a lift cart or some other means to support the circuit breaker from the bottom before replacing supports.
Image1.1.1
 
2. Remove mounting bolts from bottom support (252-7486) and bottom mounting screws on circuit breaker.
 
3. Install new bottom support (296-5557) and connect with original mounting bolts and washers.
 
4. Re-install bottom circuit breaker mounting screws with original hardware.
 
5. Remove ladder clip and mounting bolt from top support (252-7451).
Image1.5.1
 
6. Remove mounting bolts from top support (252-7451) and top mounting screws on circuit breaker
 
7. Install new top support (296-5556) and connect with original top mounting bolts and washers.
 
8. Install ladder clip in new modified top support (296-5556) with original hardware
 
9. Re-install top circuit breaker mounting screws with original hardware.
 
10. Tighten all bolts to correct torque.
Image1.10.1
 
If you are having difficulty removing or installing any of the ?glass sticks? try on of the following tips.

A. Remove the first bolt on top angle bracket to allow more clearance when installing the support.
Image1.11.1
 
B. Disconnect the circuit breaker bus bar leads to allow more clearance when removing or installing the support.
Image1.12.1
 
 

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