Wastegate Air Line Filter Now Available For Certain 793, 793B And 793C Off-Highway Trucks Caterpillar

Problem:

Moisture and oil may occur in the air line to the wastegate on certain 793, 793B, and 793C Off-Highway Trucks. This may cause the wastegate solenoid to stick during operation.

Solution:

A new filter is now available which may prevent the wastegate solenoid from sticking. The filter removes moisture and oil from the air supply.

Illustration 1.

1. Install two 3D-8913 Elbows (1) onto 185-4368 Filter (2).

2. Install 5M-6214 Plug (10) into 185-4368 Filter (2).

Illustration 2.

3. Refer to Illustration 2. Remove the paint from the area to be welded.

4. Weld two 8D-3508 Bosses (3) as shown in Illustration 2. Use 3 mm fillet welds all around.

Illustration 3.

5. Use two 5M-3062 Bolts (4) and two 8T-4896 Washers (5) to install 102-8639 Bracket (6) onto 8D-3508 Bosses (3).

6. Use two 1W-4724 Clamps (7) to secure 185-4386 Filter (2) to 102-8639 Bracket (6).

7. Disconnect the hose that runs from the wastegate to cab port 2.

8. Connect the hose to the inlet side of the filter.

9. Install 003-2143 Elbow (8) into the disconnected port 2.

10. Use 7D-6294 Hose (9) to connect 003-2143 Elbow (8) to 3D-8913 Elbow (1) on the outlet side of the filter.

NOTE: Drain the water from the filter every 250 service hours.

NOTE: Replace the filter element every 1000 service hours.

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