129
4.16 Preservative treatment
Maintenance
Inspect the engine closely, and cover
all openings with tape to prevent dirt
and moisture from entering. Install a
warning tag which alerts others of no
oil in the engine and that it must
not be started.
Store the engine /vehicle in a dry
area of even temperature.
Rotate crankshaft two or three
revolutions every 3 to 4 weeks using
engine barring tool.
Preparing the engine after short
term storage.
Remove tapes from all openings, and
remove warning tag. Refill oil filter
with clean W-40 oil, and fill oil pan
to high-mark on dipstick. Prime
lubrication system.
Use starter to crank engine for a
maximum of 30 seconds with 2
minute intervals until oil pressure
builds up.
Use clean diesel to flush
preservative oil from fuel system, and
fill fuel filters again. Prime and vent
the fuel system.
Engine storage (Long term)
This procedure describes the
method of preparing an engine for
long term (6 to 24 months) storage.
Note : If the engine has been stored
for 24 months, cooling system must
be flushed with a solvent. Repeat the
flushing procedure a second time.
Run engine at high idle until coolant
temperature reaches 70
O
C.
Stop the engine.
Drain oil from sump. Install drain plug
and fill sump to high level mark on
dipstick with preservative oil.
Note : Lubricating system
preservative oil must meet Military
Specification MIL-L-21260 Type PE
30-I SAE 30.
Disconnect fuel supply tube at fuel
filter and keep injector return tube at
a convenient place.
Note : Fuel system preservative oil
must meet Federal Specification VV-
L-800C.
Fill two containers, one with diesel
and the other with preservative oil.
Put both fuel tubes into the container
of diesel.
Start the engine. When it is operating
smoothly, put fuel supply tube into
the container of preservative oil.
Remove injector return tube from
diesel container. When preservative
oil flows from the tube, stop the engine.
Connect fuel supply tube to fuel filter,
and put a cap at ends of all other fuel
tubes.
Drain and flush the cooling system,
using a water-soluble rust inhibitor.
Spray preservative oil into intake and
the exhaust ports of cylinder head
and exhaust manifold.
Install exhaust manifold.
Remove rocker housing covers, and
spray rocker levers, valve springs,
valve stems, valve guides, and push
rods with preservative oil. Install
rocker housing covers.
