Product Support Program For Replacing The 6V9200 Elbows For The Hydrostatic Drive Circuit That May Leak On Certain 914G And IT14G (Speeder Version) Wheel Loaders Caterpillar

Product Support Program For Replacing The 6V9200 Elbows For The Hydrostatic Drive Circuit That May Leak On Certain 914G And IT14G (Speeder Version) Wheel Loaders

Usage:

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Caterpillar: Confidential Yellow

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 Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS8999" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

Termination Date

April 30, 1998

Problem

The 6V9200 Elbows for the hydrostatic drive circuit may leak on certain 914G and IT14G (speeder versions) Wheel Loaders. This may lead to loss of oil and result in possible damage to the hydrostatic-drive pump. Failure to follow the correct towing procedure, following such a failure, can also lead to damage to the hydrostatic-drive motor.

Affected Product
Model & Identification Number

914G (9WM87-172, 9WM173-216, 9WM218-290, 9WM292-307, 9WM309-328, 9WM330-356, 9WM358-485)

IT14G (1WN94-338)

Parts Needed

2 - 3J7354 Seal-O-Ring

2 - 4K8302 Clip

6 - 6V8397 Seal-O-Ring

2 - 6V8730 Union - Face

2 - 6V9872 Connector

1 - 1099776 Hose Assembly

1 - 1129441 Hose Assembly

Action Required

The 6V9200 Elbow should be replaced by the 6V9872 Connector-0-Ring Port to O-Ring Face Seal when possible. See the attached Rework Procedure.

Service Claim Allowances

NOTE: This is a 2-hour job.

Parts Disposition

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

Atach.

(1-Rework Procedure)

Rework Procedure

1. Required components to complete field rework of the IT14G or 914G High Speed Machine with 80 cc hydrostatic motor:

2. Slide under right side of machine.

3. Remove 1123357 Plate Assembly (bottom guard).

4. Remove 8T4137 Bolt, 8T4121 Washer, and two SP9297 Clips. Remove 0950670 Bolt and 5P8245 Washer. Remove and discard 1206081 Bracket Assembly.

5. Locate signal line (Item 8) where it joins 1206082 Tube Assembly on 80cc hydrostatic motor. Loosen nut where tube and hose join, loosen tube assembly nut on ninety degree swivel elbow. Remove tube assembly and discard (Item A on Illustration 1).

6. Remove 6V9200 Elbow and discard (Item B on Illustration 1). Install new Seal (Item 5) on connector (Item 4) and install in the signal port of hydrostatic motor. Tighten to torque specifications.

7. Install seal (Item 2) into connector (Item 4) and hand tighten the ninety degree end of hose assembly (Item 7) to connector (Item 4). Adjust elbow to orientation on Illustration 2 and tighten to specification.

8. Route hose assembly (Item 7) through clip (Item 3). Assemble 5P8245 Washer and 09S0670 Bolt to clip (Item 3). Locate the clips (Item 3), bolt, washer, and hose assembly as oriented in Illustration 1 and hand tighten. Tighten bolt to 120 ± 20 N·m (90 ± 15 lb ft).

9. Install two seals (Item 2) to connector (Item 6) (one on each end). Assemble one end of connector (Item 6) to hose assembly (Item 8) and tighten to specification. Assemble opposite end of connector (Item 6) to hose assembly (Item 7) and tighten to specifications.

10. Locate signal line (Item 9) where it joins 1206083 Tube Assembly on 80 cc hydrostatic motor. Loosen nut where tube and hose join. Loosen tube assembly nut on ninety degree swivel elbow. Remove tube assembly and discard (Item A on Illustration 1).

11. Remove 6V9200 Elbow and discard (Item B on Illustration 1). Install new seal (Item 5) on connector (Item 4) and install in signal port of hydrostatic motor. Tighten to specification.

12. Install seal (Item 2) into connector (Item 4) and hand tighten the ninety degree end of hose assembly (Item 1) to connector (Item 4). Adjust elbow to orientation on Illustration 1 and tighten to specification.

13. Route hose assembly (Item 1) through clip (Item 3). Assemble 5P8245 Washer and 0950670 Bolt to clip (Item 3). Locate clip, bolt, washer, and hose assembly as oriented in Illustration 1 and hand tighten. Tighten the bolt to 120 ± 20 N·m (90 ± 15 lb ft).

14. Check that all bolts, fittings and nuts have been tightened to specifications.

15. Replace bottom guard.

16. Check hydraulic fluid level in tank and refill as required.

NOTE: It is recommended that all ORFS and STOR Seals be discarded and replaced with new parts.

Illustration 1