PRODUCT SUPPORT PROGRAM FOR REPLACING THE 341-7668 FINAL DRIVE GROUP ON CERTAIN 306 EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE 341-7668 FINAL DRIVE GROUP ON CERTAIN 306 EXCAVATORS

Usage:

REBE7729-00

Show/hide table

17Feb2012

D-76

Show/hide table

*Before/After*	PRODUCT SUPPORT PROGRAM FOR REPLACING THE 3417668/">341-7668 FINAL DRIVE GROUP ON CERTAIN 306 EXCAVATORS
4050		PS43513

Show/hide table

NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS43513" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

Show/hide table

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.

Show/hide table

TERMINATION DATE

28Feb2014

PROBLEM

Show/hide table

The hydraulic motor shaft is undersized for the bearing. Eventually the shaft seal will fail and the gearbox will fill with hydraulic oil.

AFFECTED PRODUCT

Show/hide table

Model	Identification Number
306	MXH01152-01169

PARTS NEEDED

Show/hide table

Qty	Part Number	Description
4	3J1907	SEAL-O-RING
4	3K0360	SEAL-O-RING
4	4J5477	SEAL-O-RING-ORFS
4	6V8398	SEAL-O-RING-ORFS
2	3417668	DRIVE GP-FINAL-H
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% 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

Show/hide table

Replace with new 3417668/">341-7668 Final Drive Group containing the correct shaft/bearing components.

Show/hide table

SERVICE CLAIM ALLOWANCES

Show/hide table

Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-1200 hrs, 0-12 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

Show/hide table

NOTE: This is a 4.0-hour job

Show/hide table

PARTS DISPOSITION

Show/hide table

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

Rework Procedure

Show/hide table

Removal Procedure

1. There is a drive motor on either side of the machine. To remove a motor raise one side of the machine. Place Tooling (A) (5P-6215 Jack Stand) under the frame. Refer to Image1.1.1.?

Image1.1.1

2. Rotate the final drive until drain plug (1) is at the bottom. Drain the oil into a suitable container for storage or disposal. Refer to Image1.2.1.

3. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "System Pressure - Release".

Image1.2.1

4. Remove bolts (2) and cover (3) from the rear of the undercarriage frame.

Image1.3.1

5. Disconnect hose assemblies (4).

6. Remove adapters (5) from the motor. Retain adapters (5) for later use in install.

Image1.4.1

7. Attach a suitable lifting device to final drive and travel motor (6). Remove bolts (7). Remove final drive and travel motor (6). The combined weight of final drive and the travel motor (6) is approximately 73 kg (159 lb).

Image1.5.1

Installation Procedure

1. Thoroughly clean all mating surfaces prior to installation.

Note: Adjust the height of Tooling (A) (5P-6215 Jack Stand) so that there is enough clearance between the sprocket and track links for installation of the final drive and travel motor.

2. Raise the side of the machine and install Tooling (A) (5P-6215 Jack Stand) under the frame.

Image1.6.1

3. Attach a suitable lifting device to final drive and travel motor (1). Install final drive and the travel motor into the undercarriage frame. The weight of final drive and travel motor is approximately 73 kg (159 lb). Weight of the sprocket is included.

Image1.7.1

4. Apply Loctite 242 on the threads of bolts (2). Install bolts. Tighten bolts to a torque of 160 +/- 30 N.m.

5. Replace the O-Ring seals at the end of hose assemblies with new O-Ring seals (3).

6. Connect the adapters, retained from removal, and replace O-Ring seals (4).

7. Connect hose assemblies.

Image1.8.1

8. Install cover (5) and bolts (6).

Image1.9.1

9. Fill the final drive with oil. Refer to SEBU8577, Operation and Maintenance Manual, "Final Drive Oil - Change", for the proper procedure.

10. Fill the hydraulic tank with oil. Refer to SEBU8577, Operation and Maintenance Manual, "Hydraulic Oil Level - Check".