Product Support Program For Replacing The Air Conditioner Compressor Mounting System On Certain 315, 317 And 317N Excavators Equipped With Air Conditioning Attachment Caterpillar

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 "PS4681" 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

Problem

The air conditioner compressor mounting system needs to be replaced on certain 315, 317 and 317N excavators equipped with air conditioning attachment. The new mounting ensures that belt tension retainer system remains tight. In some cases, loosening has occurred, which resulted in failure of the air conditioner support brackets and/or the condenser itself.

Affected Product
Model & Identification Number

315 (3ZM170, 3ZM184, 3ZM270, 3ZM272, 3ZM313, 3ZM351, 3ZM364, 3ZM369, 3ZM390 )

317 (4MM242, 4MM244, 4MM257, 4MM261, 4MM265, 4MM266, 4MM270, 4MM272, 4MM299, 4MM305, 4MM315, 4MM326, 4MM409, 4MM425, 4MM449, 4MM453, 4MM463, 4MM466, 4MM475-477, 4MM500, 4MM502, 4MM510, 4MM518, 4MM521, 4MM523-525, 4MM529, 4MM531, 4MM536, 4MM551, 4MM553, 4MM554, 4MM568, 4MM571, 4MM579, 4MM587, 4MM610, 4MM617, 4MM662, 4MM663, 4MM671, 4MM698, 4MM701, 4MM757, 4MM758, 4MM761, 4MM767, 4MM780, 4MM782, 4MM789, 4MM809, 4MM818, 4MM826, 4MM839, 4MM881, 4MM908, 4MM923 )

317N (9SR314, 9SR329, 9SR330, 9SR332, 9SR358, 9SR360, 9SR368)

Parts Needed

2 - 6B6684 Nut - Full

1 - 7C2164 Block

1 - 7C8434 Bracket

1 - 4I7573 Brace

1 - 9L5134 Rod - Alternator Adjustor

1 - 5P1076 Washer - Conical

6 - 8T4121 Washer - Plate

3 - 8T4133 Nut

1 - 8T4185 Bolt

2 - 8T4186 Bolt

1 - 8T4194 Bolt

1 - 8T4223 Washer - Plate

Action Required

In order to avoid interference of the new tensioning system, the 3A9099 Brace is replaced by 4I7573 Brace, which has another shape. 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.

Attach.

(1-Rework Procedure)

Rework Procedure

1. Remove bottom guards from under the engine and the radiator group to get access to air conditioner compressor.

2. Remove 3A9099 Brace shown on Illustration 1.

3. Remove 8T4908 Bolt and 8T4224 Washer from 1186748 Compressor Tensioning Plate shown on Illustration 2.

4. Remove 1186748 Plate, 8T4154 Bolt, 8T4224 Washer and 5C7261 Nut.

5. Prepare the new tensioning system sub-assembly, according to Illustration 3. Assemble 7C2164 Block with 7C8434 Bracket, using 8T4185 Bolt and 8T4121 Washer on one side, a 8T4133 Nut and another 8T4121 Washer on the other side. Then screw one 6B6684 Nut on 9L5134 Rod, insert 7C2164 Block and screw another 6B6684 Nut.

6. Install this sub-assembly on two ears of the air conditioner compressor, according to Illustration 4, using for each ear one 8T4186 Bolt, two 8T4121 Washers and one 8T4133 Nut.

7. If necessary, loosen alternator V-belts, according to Disassembly and Assembly Manual SENR6225.

8. Remove 1004830 Bolt and 5M2894 Washer which hold the 1013806 Alternator Tensioning Plate.

9. Replace them with 8T4194 Bolt which goes through the eye of the 9L5134 Rod, 5P1076 Washer 1013806 Alternator Plate, 8T4224 Washer and engine casting.

10. Adjust air conditioner compressor belt tension and if necessary alternator belts tension according to the maintenance section of the Operation and Maintenance Manual.

11. Install 4I7573 Brace in place of 3A9099 Brace formerly removed.

12. Reinstall bottom guards under the machines.

Illustration 1.

Illustration 2.

Illustration 3.

Illustration 4.