PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SWING DRIVE GROUP BOLTS ON CERTAIN 374D EXCAVATORS Caterpillar


PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SWING DRIVE GROUP BOLTS ON CERTAIN 374D EXCAVATORS

Usage:

TEBE0671-02

12Mar2014
(Revised 11Jun2014)


U-138
A-102
D-132
O-122

 

Priority

  
  

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SWING DRIVE GROUP BOLTS ON CERTAIN 374D EXCAVATORS

5459 79PA
PI32317
NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI32317" 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 "PI32317" 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.

 
NOTE:

This Revised Service Letter replaces the 12Mar2014 (Revised 21Apr2014) Service Letter. Changes have been made to the SMCS codes.


COMPLETION DATE

TERMINATION DATE

30Sep2014 31Mar2015

PROBLEM

The bolts holding the swing drives on the upper frame need to be replaced on certain 374D Excavators. The bolts may be loosened and may cause damage to the swing drive, swing bearing, and upper frame.

AFFECTED PRODUCT

Model Identification Number
374D L PAP00263-00269, 271-283, 285-299, 301-315, 317-322, 324-325, 327, 329-330, 333-334

PAS00774-00806, 812, 818, 820-821, 823, 826, 836-847, 849-850, 857, 865, 867-873, 875-879, 882, 884-885, 887-888, 890, 894-899, 901-902, 904-905, 908, 911, 918, 920

PAX00428-00441, 443, 445-446, 449-450, 452

PJA00146-00149, 151
374D OEM  JNZ00137-00147

PARTS NEEDED

Qty

Part Number Description
30 2676787 SPACER
30 4471725 BOLT-HEX HEAD
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 36% 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

Remove the 8T-5878 Bolt and 267-6787 Spacer and replace with new 447-1725 Bolts and new 267-6787 Spacers. Refer to the attached Rework Procedure.

If thread/dowel hole is damaged, please work with your dealer technical communicator for further rework assistance.

OWNER NOTIFICATION

Owners in the following countries will receive the attached Owner Notification:
US
Canada

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 8.0-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.
 
 
 
EXAMPLE COPY OF OWNER NOTIFICATION

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SWING DRIVE GROUP BOLTS

MODELS INVOLVED - CERTAIN 374D EXCAVATORS

Dear Cat Product Owner:

The swing drive group mounting bolts need to be replaced on the products listed below. The existing 8T-5878 Bolt may be loosened and may cause damage to the swing drive, swing bearing, and upper frame. You will not be charged for the service performed.

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

If you are no longer the owner of this product(s), please contact your local Cat dealer so that our records can be updated. Please refer the dealer to their Service Letter dated 12Mar2014 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 12Mar2014 Service Letter


Rework Procedure


 
1. Remove the bottom guard below the main valve. Move the drain hoses from swing bay area in order to avoid interference with the tooling.

2. Remove and replace the 8T-5878 Bolts one at a time in an alternating sequence. Refer to Image1.1.1 for the sequence.

Refer to Image1.1.2 for the required tooling. For the bolt removal a 3/4" impact with swivel and 36mm socket is required.

3. When replacing the bolts, apply a general-purpose adhesive/sealant for locking and sealing the screws and nuts in place (Loctite 242 or 243) to the bolts, before installing. Do NOT clean out the threads before installing.

4. Tighten each bolt to a specified torque of 900 +/- 100 N.m (665 +/- 75 lb ft).

Refer to Image 1.1.3 for the required tooling.

For installation, a 132-8112 Hydraulic Wrench, if available, or the updated serviceable 384-8910 Hydraulic Wrench. An equivalent hydraulic wrench with a 3/4" Sq Drive, with a torque range of 140 - 1400 ft/lbs and similar size and dimensions for access.
Image1.1.1
Image1.1.2
Image1.1.3
 
 

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