TUBE 2106279 - Caterpillar

Follow your Disassembly and Assembly Manual to remove and replace the existing pump coupling with a new one. Correct installation of the pump coupling is with bolt head toward the flywheel side to leave more gap.
OWNER NOTIFICATION
U.S. and Canadian owners will receive the attached Owner Notification.
SERVICE CLAIM ALLOWANCES
****Parts Stock****
Submit one claim for all parts removed from dealer parts stock.
****Affected Product****
Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
100% 100% 0% 0% 0% 0%
This is a 20.0-hour job
PARTS DISPOSITION
****Parts Stock****
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
****Affected Product****
Java Code "affectDisposition" Chints October 12 2006 w.r.t CM000343756 -->
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999
PRIORITY - 385C pump coupling change
MODELS INVOLVED - 385C - 385CL - 385CL MH - 385C FS
Dear Caterpillar Product Owner:
New pump coupling 1968133/">196-8133 need to be installed on the products listed below. Previous pump coupling 266-6305 and 222-8374 experience spring tip failure that migth damage the engine rear gear train, putting machine down. 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 17Nov2006 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 17Nov2006 Service Letter
Rework Procedure
Refer to the 385B Service Manual (RENR5407) "Remove and Install Main Hydraulic Pumps" in order to access the coupling group.
Remove the flywheel and check the rear gear train. If the gears are damaged, replace all damaged parts, before installing the new coupling.
Reinstall the flywheel according to the disassembly and assembly procedure.
1. Clean and dry all parts of the new coupling.
2. Apply sealant on the 8T-4835 Mounting Bolt for the coupling. Recommended sealant for mounting bolt is Loctite Product 270 or 271.
Image1.3.1
3. Install the 1968133/">196-8133 Coupling Group to the flywheel. Bolt tightening torque is 135 +/- 20Nm. Please take care the direction of coupling installation, and make sure to assemble the coupling so that the bolt head of coupling faces to flywheel side.
4. Reuse the 233-1155 Tube Assembly and pump mounting bolts. Do not reuse the existing main hydraulic pump housing seals, install one each of a 6V-5043, 3P-0658, 6V-5049 O-Ring Seals.
5. Install the hydraulic pump, and tighten the pump flange mounting bolt to 70 +/- 15Nm.
6. Fill hydraulic tank and engine with oil.
7. Before starting the engine to avoid cavitation that could cause serious damage to the pumps, refer to RENR5405, Test & Adjust "Main Hydraulic Pump Air - Purge" procedure to eliminate any air that may be trapped.
8. Start the engine and check oil level of hydraulic tank and engine again. Check any leakage and abnormal noise.
Addendum: At Engine overhaul, replace Pump Coupling Springs as a normal overhaul procedure.