G3406 Engine Caterpillar

Engine Auxiliary Sump Oil - Change

Usage:

Note: An auxiliary sump enables the oil capacity of the engine to be increased.

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Illustration 1	g00787079
Auxiliary oil filter housing (1) Vent plug (2) Drain plug

If the engine is equipped with an auxiliary sump, remove vent plug (1). Remove drain plug (2). Allow the oil to drain. After the oil has drained, clean the drain plug.

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Illustration 2	g00787105
(1) Vent plug (2) Drain plug (3) Nut (4) Washer (5) Plug (6) Bolt (7) Cover (8) Cover gasket (9) Nut (10) Spring retainer (11) Spring (12) Bolt (13) Washer (14) Spider (15) Plate

Remove 12 nuts (3), washers (4), and bolts (6).

Remove cover (7) and gasket (8). Do not damage the gasket.

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Possible injury can occur during the removal of the nut, the spring retainer, and the spring. Spring force will be released when the nut and the spring retainer are removed. Be prepared to hold the spring retainer as the nut is loosened.

Remove nut (9), spring retainer (10), and spring (11). Hold spring retainer (10) as nut (9) is loosened.
Remove bolt (12). Remove washer (13) and spider (14). Remove plate (15).
Remove the oil filter elements if the oil filters have been installed. Clean the inside of the oil filter housing.
Inspect the oil filter elements if the oil filters have been installed. For instructions on inspecting the oil filter elements, refer to the Operation and Maintenance Manual, "Engine Oil and Filter - Change" topic (Maintenance Section).
Ensure that plug (5) is tight.
Install drain plug (2). Tighten the drain plug to 70 ± 14 N·m (50 ± 10 lb ft).
Note: Use of the auxiliary oil filter elements is not required.
If the use of auxiliary oil filter elements is desired, install new elements.
Install plate (15), spider (14), washer (13), and bolt (12).
Install spring (11) on spider (14). Install spring retainer (10) and nut (9) on bolt (12).
Tighten nut (9) in order to compress spring (11) until the spring retainer bottoms out on bolt (12). Do not overtighten the nut.
Fill the sump with oil. For the correct amount of oil, refer to the Operation and Maintenance Manual, "Refill Capacities and Recommendations" topic (Maintenance Section).
Inspect cover gasket (8) for tears, breaks, or other damage. If the cover gasket is damaged, replace the old cover gasket with a new cover gasket. Install cover gasket (8). Install cover (7).
Install twelve bolts (6), washers (4), and nuts (3). Tighten nuts sequentially around the cover until the nuts are snug. Tighten the nuts to 100 ± 15 N·m (75 ± 11 lb ft).
Install vent plug (1).