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TM 55-1905-223-24-5
b.
Long Term Storage. When an engine is to be stored for 6 months or more, the following procedures
must be performed.
(1)
The engine must be started and the speed gradually increased to 1200 rpm with no
load. Operate the engine until the water temperature reaches 160 (71 ). Stop the
F
C
engine and drain the old oil.
(2)
Fill the crankcase to the full mark on the dipstick with preservative oil, U.S. Military
Specification MIL-L-21260, Type P-10, Grade 2, SAE 30.
(3)
Disconnect both fuel lines at the fuel supply tank. Fill two portable containers, one with
diesel fuel and the second with preservative oil U.S. Military Specification MIL-L-644,
Type P-9.
(4)
Start the engine with the fuel inlet line pulling fuel from the can with the diesel fuel.
The injector drain line can flow into the container with the diesel fuel. After the engine
is started and is running at idle, move the fuel inlet line to the container with the
preservative oil. Stop the engine and reconnect the fuel lines to the supply tank.
(5)
The fuel tank must be drained and the drain plug installed. Make a cover for the filler
vent with tape.
(6)
Drain all the pumps, compressors, coolers, filters and the crankcase. Replace all the
plugs after draining.
(7)
Remove the intake and exhaust manifolds. Apply the preservative oil in a spray into
the intake and exhaust parts of the engine. Install the intake and exhaust manifolds.
(8)
Inspect the coolant in the cooling system. If the coolant contains rust, drain and flush
the system. Then fill it with a rust preventing compound. Drain the system while it is
hot and then replace the plug. Use an oil which has rust inhibitors that will mix with the
water. Flush the cooling system before returning it to service.
(9)
Make sure all outside surfaces of the engine are painted. If painting is necessary, refer
to step c.
(10) Remove the valve covers and apply preservative oil to the rocker levers, valve stems,
springs, guides, crossheads and push tubes. Install the covers.
(11) All engine openings must have a cover of heavy paper and tape.
(12) Put a tag on the engine to show the following:
(a) The engine has been prepared for storage.
(b) The coolant has been removed.
(c) The crankshaft must not be rotated.
(d) The date of the engine was prepared for storage.
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