Crankcase and Oil System.

TM 43-0156

Step

Function

Mech

Insp

(c)

Disconnect the injector fuel return line at the

cont

disconnect coupling and connect a transparent line

to allow for draining into a recovery container.

(d)

Start the engine using the container of diesel fuel

as the fuel supply. Operate at fast idle until

thoroughly warm.

(e)

Accelerate the engine to three-fourths speed.

Switch the fuel supply to the container containing

VV-L-800 preservative oil. Operate the engine at

this speed until undiluted preservative oil is

flowing into the recovery container. Stop the engine.

(f)

Disconnect the temporary fuel return line and re-

connect the permanent fuel return line.

(g)

Disconnect the line from the fuel intake and re-

connect the engine fuel intake line.

NOTE

The recovered fuel oil mixture shall not be used to preserve other

fuel systems.

(4) Crankcase and Oil System.

NOTE

Allow sufficient time for engine to cool before processing oli system.

(a)

Completely drain the crankcase.

(b)

Turn compression release to decompression (away

from engine) on each side of engine.

(c)

Remove valve covers.

(d)

Disconnect the intake hose of the electric prelube

pump from the oil line and connect to a supply of

MIL-L-21260, type I, grade 30 preservative oil.

(e)

Switch on the prelube pump.

B-2-3