PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE CAM PLATE FOR THE TRAVEL MOTOR ON CERTAIN 325C AND 330C EXCAVATORS Caterpillar


PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE CAM PLATE FOR THE TRAVEL MOTOR ON CERTAIN 325C AND 330C EXCAVATORS

Usage:

SEBE9446

January 8, 2006
U-12
D-12
O-12


 
Priority

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE CAM PLATE FOR THE TRAVEL MOTOR ON CERTAIN 325C AND 330C EXCAVATORS

4351 5058
PI30849
NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI30849" 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 "PI30849" 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

July 31, 2006 January 31, 2007

PROBLEM

The cam plate of the travel motor may interfere with the snap ring due to inadequate clearance on certain 325C and 330C Excavators. Replace the cam plate with the correct cam plate.

AFFECTED PRODUCT

Model Identification Number
325C
BKW321
330C JAB781, 789, 790, 792
 
KDD1241-1243, 1256, 1257, 1278-1282, 1285-1287, 1289, 1291, 1294-1298, 1305, 1307-1309, 1315, 1327, 1335, 1317-1321, 1343

PARTS NEEDED

Qty

Part Number Description
2 3F1547 SEAL-O RING
2 4K4284 RING-RETAINI
2 6V3382 SEAL-LIP TYP
4 7Y5219 SEAL-O-RING
2 951585 SEAL-O-RING
4 951700 SEAL-O-RING
2 1673859 PLATE-CAM

ACTION REQUIRED

See the attached Rework Procedure.

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%
16.0
0
0
0
0
NOTE: This is a 16.0-hour job.

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

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.

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

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE CAM PLATE FOR THE TRAVEL MOTOR

MODELS INVOLVED - 330C EXCAVATORS

Dear Caterpillar Product Owner:

A new cam plate for the travel motor needs to be installed on the products listed below. The incorrect cam plate may have been installed during manufacturing. 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 January 8, 2006 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 January 8, 2006 Service Letter

Rework Procedure

Illustration 1

  1. Disassemble the head by loosening the 8 bolts.

  2. Illustration 2


     
  3. Move the 2 seal-o-rings from the end face of the body.

  4. Illustration 3


     
  5. Remove 20 124-1561 Springs for the spring brake.

  6. Illustration 4

    Illustration 5

  7. Move the piston brake.

  8. NOTE: Insert the bolt into the hole on the piston brake. Then pull out the piston brake from the body.

    Illustration 6


     
  9. Remove the 167-3859 cam plate and 167-3855 shaft from the body at same time.

  10. NOTE: Check the contact point on the cam plate and ring retaining.

    Illustration 7


     
  11. Check for contamination inside the body.

  12. Illustration 8


     
  13. Replace the 4K-4284 Retaining Ring on the shaft.

  14. Illustration 9


     
  15. Check the position of the 167-3857 and 167-3858 Keys when you install the cam plate. Apply new hydraulic oil on the face of the cam plate.

  16. Illustration 10


     
  17. Verify the piston moves smoothly in the barrel.

Illustration 11

10) Install the 173-4063 Barrel Assembly to the shaft.

11) Check the end face of the barrel which should be lower than the shoulder of the shaft. Check the rotation of the barrel.

Illustration 12

12) Insert the piston brake to the regular position.

NOTE: A plastic hammer may be needed in order to insert the piston brake.

Illustration 13

13) Set 20 124-1561 Springs on the piston brake.

NOTE: Do not set the spring to the position of the hole on the spring guide.

Illustration 14

14) Put the 180-6769 Bearing on the shaft.

Illustration 15

15) Check the position of the 2 175-7887 Dowels.

Illustration 16

16) Apply grease to the reverse side of the port for the 167-3867 Plate before installing to the head.

Illustration 17

Illustration 18

17) Put the head on the body then tighten the 8 8T-2393 Bolts.

18) Tighten the bolts to a torque of 240 +/- 40 Nm.

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