Detroit Diesel — Oil System Priming Procedure for DD15 Engine

A Detroit Diesel service procedure — check it applies to your exact model before use.

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Procedure

1. Make sure the engine is OFF.
2. Using a 17 mm (0.6693 in.) allen tool remove the allen head plug from the oil priming port on the module.
3. Install adaptor J-49181 into the oil priming port in the oil module.
4. Install tool J-45299 engine pre-lubrication kit 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 the canister is empty.
8. The oil system is now primed with sixteen quarts of oil. Fill the oil pan with an additional thirty quarts of oil.
9. Close the valve and loosen the fitting; do not completely remove it from the adaptor.
10. Remove the priming adaptor from the oil module with the line attached to keep the oil from flowing out of the module.
11. Install the allen head plug to the module and torque to 70-80 N·m (51-59 ft·lb).
12. Start the engine and monitor the oil pressure.
13. After the engine oil pressure stabilizes, shut the engine down and check the oil per the oil check guidelines.

Source: manual:08DD157 - Lube System Priming.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.