EXTENDED STORAGE (30 DAYS OR MORE)
When An Engine Is To Be Removed From Operation For An Extended Period Of
Time,prepare It as follows:
1. Drain and thoroughly flush the cooling system with clean, soft water
2. Refill the cooling system with clean, soft water.
3. Add a rust inhibitor to the cooling system (refer to Corrsion Inhibitor).
4. Diesel Exhaust Fluid (DEF) or Urea has a limited shelf life. Long term storage in
vehicle in excess of 6 months is not recommended. Replace fluid if exceeding
this time frame. Refer to Cummins 018-026 Diesel Exhaust Fluid
Recommendations and Specifications document.
5. Remove, check and reconditon the injectors, if necessary, to make sure they
will be ready to operate when the engine is restored to service.
6. Reinstall the injectors in the engine, time them, and adjust the valve clearance.
7. Circulate the coolant through the entire system by operating the engine until
normal operating temperature is reached (160°F. to 185°F).
8. Stop the engine.
9. Remove the drain plug and completely drain the engine crankcase. Reinstall
and tighten the drain plug. Install new lubricating oil filter elements and gaskets.
10. Fill the crankcase to the proper level with a 30-weight preservative lubricating
oil MIL-L- 21260, Grade 2 (P10), or equivalent.
11. Drain the engine fuel tank.
12. Refill the fuel tank with enough rust preventive fuel oil such as Americal Oil
Diesel Run-In Fuel (LH 4089), Mobil 4Y17, or equivalent, to enable the engine
to operate 10 minutes.
13. Drain the fuel filter and strainer. Remove the retaining bolts, shells and
elements. Discard the used elements and gaskets. Wash the shells in clean fuel
oil and insert new elements. Fill the cavity between the element and shell about
two thirds full of the same rust preventive compound as used in the fuel tank
and reinstall the shell.
14. Operate the engine for 5 minutes to circulate the rust preventive throughout the
engine.
15. Refer to page 4-6 and service the air cleaner.
T300-1_T500-1_T780
Maintenance
372 P/N 12261-683
REVISED: January 2015
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