Detroit Diesel — Priming the Engine Lubrication System

Maintenance

From a Detroit Diesel service manual — check it applies to your exact model before use.

Procedure

1. Using a 17 mm Allen tool, remove the Allen head plug from the oil priming port on the oil coolant module.
2. If equipped with an oil sample valve, remove the valve and washer.
3. Install Oil System Priming Adaptor tool (J-49181) into the oil priming port.
4. Install Engine Preluber Kit (J-45299) to the fitting adaptor.
5. Fill the canister with eight quarts of oil.
6. Open the valve on the primer and start pumping until the container is empty.
7. Fill the container with an additional eight quarts of oil and pump until empty.
8. The oil system is now primed with sixteen quarts of oil; pour remaining oil into the oil filler to correct full level.
9. Close the valve and loosen the fitting (do not completely remove).
10. Remove the priming adaptor with the line attached.
11. Install the Allen head plug or oil sample valve and torque to 70-80 N·m.
12. Start the engine and monitor the oil pressure.

Source: Detroit Diesel service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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