PRODUCT IMPROVEMENT PROGRAM FOR REPAIRING THE FUEL CONTROL ASSEMBLY ON SOME 3161 GOVERNORS Caterpillar


PRODUCT IMPROVEMENT PROGRAM FOR REPAIRING THE FUEL CONTROL ASSEMBLY ON SOME 3161 GOVERNORS

Usage:

SEBE8889-01

August 29, 2004
(Revised September 2004)
U-249
D-190


 
Safety

Parts stock action needed

PRODUCT IMPROVEMENT PROGRAM FOR REPAIRING THE FUEL CONTROL ASSEMBLY ON SOME 3161 GOVERNORS

1264
PI10335
NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI10335" 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 "PI10335" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

NOTE: This Revised Service Letter replaces the August 29, 2004 Service Letter. Changes have been made to the Title of the program.

PROBLEM

The carbide tip on the stem assembly in the smoke control limiter used on some 3161 governors may separate and cause the smoke limiter to not perform correctly and the governor to operate the engine at an uncontrolled speed.

AFFECTED PRODUCT

Model Identification Number
3508
4ZL1006
3512
49Y1047
50Y1824-1827
3516
54Z1207

PARTS NEEDED

Qty

Part Number Description
1 1339309 STEM ASSEMBLY

ACTION REQUIRED

***** Parts Stock *****

Rework all 101-8238 and 6I3843 CONTROL GROUPS in parts stock. The 133-9309 STEM ASSEMBLY needs to be replaced. Refer to the attached Rework Procedure.

Rework all Governor Groups in the following list that are in parts stock. If you know that one of these governors have been installed on an engine please rework that governor.
 

Affected Serial Numbers
Cat Part No.
Woodward S/N
0R-8306
12079148
0R-8308
2624120
0R-8309
2371956
2266480
2317087
2302773
2618924
2226600
2498684
2371909
2316836
2316957
2316905
2194060
2551674

 
0R-8311
12109608
2499781
10000426
2512414
2260982
12247636
12195807
13209672
124-3169
13745820
130-2600
13752123

***** Affected Product *****

Refer to TIBU4281 for additional information.
 

Engine S/N Governor S/N Old Part New Part
4ZL1006 12143451 0R8306 0R8306
50Y1824 13736300 1243173 1243173
50Y1825 13739664 1243173 1243173
50Y1826 13736301 1243173 1243173
50Y1827 13738811 1243173 1243173
54Z1207 13742241 1243175 1243175
49Y1047 13739665 1243173 1243173
NOTE: Check the governor serial number before you replace the Stem Assembly. This program only applies to the serial numbers in the above chart.See the attached Rework Procedure.

OWNER NOTIFICATION

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

SERVICE CLAIM ALLOWANCES

***** Parts Stock *****

Submit one claim for all 101-8238 and 6I3843 CONTROL GROUPS that have been reworked in parts stock.

***** Affected Product *****


Caterpillar
Dealer Suggested
Customer Suggested
Parts
Labor Hrs.
Parts
Labor Hrs.
Parts
Labor Hrs.
100%
2.0
0
0
0
0
NOTE: This is a 2.0- hour job.

NOTE: U.S. and Canadian Dealers Only - Eligible dealers may enter a Type 2 SIMS Report

PARTS DISPOSITION

***** Parts Stock *****

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

***** Affected Product *****

Return the governor if the carbide tip has fallen out to:

CATERPILLAR INC.
ATTN: CLAIMSROOM, RANDY WHERLEY
STATE ROAD 26 E.
LAFAYETTE, IN 47905

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

MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach. (1-Owner Notification)
        (2-Rework Procedure)

COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

SAFETY - PRODUCT IMPROVEMENT PROGRAM FOR REPAIRING THE FUEL CONTROL ASSEMBLY ON SOME 3161 GOVERNORS

MODELS INVOLVED ? Certain 3500 Engines

Dear Caterpillar Product Owner:

A new stem assembly needs to be installed in the governor on the products listed below. Some stem assemblies may separate and cause the smoke limiter to not perform correctly and cause the engine to operate at an uncontrolled speed. If the stem assembly has separated a new governor will be installed on your engine. 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 August 29, 2004 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 August 29, 2004 Service Letter

Rework Procedure

3161 Stem Assembly Replacement Procedure

  1. Loosen and remove the three bolts on the fuel limiter cover and remove the cover from the governor.

  2. Illustration 1


  3. Remove spring seat and spring.

  4. Illustration 2

  5. Remove the stem assembly by lifting straight up. Inspect the carbide insert.

  6.  

     

    NOTE: If the insert is cracked or missing, it is likely that the part has fallen into the governor creating a potential failure mode. Reassemble the unit and return the entire governor to Caterpillar.

    Illustration 3


  7. Visually inspect the new stem assembly before installation. There should be a ring around the carbide tip indicating a strong copper braze.


  8.  
Illustration 4                  Illustration 5
  1. Insert the new stem assembly until the rubber seats on the housing.

  2.  

     

    Illustration 6

  3. Place the spring in the center of the stem assembly.

    1. Illustration 7
  4. Set the spring seat in the center of the spring.

  5. NOTE: The orientation of the spring seat should have the concave portion facing downward within the spring center.

    Illustration 8


     
  6. Align the cover and install the three cover bolts. Torque the bolts to 90 (+/-5) in-lbs.

Illustration 9

Caterpillar Information System:

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