Komatsu 930E-2 Shop Manual page 71

4. Circulate the coolant by operating the engine until
normal operating temperature is reached 160° -
185° F ( 71° - 85° C).
5. Stop the engine.
6. Drain the engine crankcase, then reinstall and
tighten the drain plug. Install new lubricating oil
filter elements and gaskets.
7. Fill the crankcase to the proper level with a 30-
weight preservative lubricating oil MIL-L-21260C,
Grade 2.
8. Drain the fuel tank. Refill with enough clean No. 1
diesel fuel or pure kerosene to permit the engine
to operate for about ten (10) minutes. If it isn't
convenient to drain the fuel tank use a separate
portable supply of the recommended fuel.
If engines in vehicle are stored where condensa-
tion of water in the fuel tank may be a problem, add
pure, waterless isopropyl alcohol (isopropanol) to
the fuel at a ratio of one pint to 125 gallons(473 L)
of fuel, or 0.010% by volume. Where biological
contamination of fuel may be a problem, add a
biocide such as Biobor JF, or equivalent to the fuel.
When using a biocide, follow the manufacturer's
concentration recommendations, and observe all
cautions and warnings.
9. Drain and disassemble the fuel filter and strainer.
Discard the used elements and gaskets. Fill the
cavity between the element and shell with No. 1
diesel fuel or pure kerosene, and reinstall on the
engine. If spin-on fuel filters and strainers are
used, discard the used cartridges, fill the new
ones with No. 1 diesel fuel or pure kerosene, and
reinstall on the engine.
10. Operate the engine for five (5) minutes to circulate
the clean fuel oil throughout the fuel system.
11. Service the air cleaner.
12. Turbocharger bearings are pressure lubricated
through the external oil line leading from the en-
gine cylinder block while the engine is operating.
However, the turbocharger air inlet and turbine
outlet connections should be sealed off with mois-
ture resistant tape.
13. Apply a rust preventive compound to all exposed
non-painted surfaces.
A07003
14. Drain the engine cooling system.
15. Drain the preservative oil from the engine crank-
case. Reinstall and tighten the drain plug.
16. Remove and clean the batteries and battery cables
with baking soda-water solution and rinse them
with fresh water. Do not allow the soda solution to
enter the battery. Add distilled water to the electro-
lyte, if necessary, and fully charge the battery.
Store the battery in a cool (never below 32° F or 0°
C) dry place. Keep the battery fully charged and
check the level and the specific gravity of the
electrolyte regularly. Never set batteries on con-
crete floor. Place on wooded blocks.
17. Insert heavy paper strips between the pulleys and
belts to prevent sticking.
18. Seal all engine openings, including the exhaust
outlet, with moisture resistant tape. Use card-
board, plywood or metal covers where practical.
19. Clean and dry the exterior painted surfaces of the
engine and spray with a suitable liquid automotive
body wax, a synthetic resin varnish or a rust pre-
ventive compound.
20. Protect the engine with a good weather-resistant
tarpaulin and store it under cover, preferably in a
dry building with temperatures above freezing.
Outdoor storage of engines is not recommended.
However, in some cases outdoor storage may be un-
avoidable. If units must be kept out-off-doors, follow
the preparation and storage instructions already given.
Protect units with quality, weather-resistant tarpaulins
(or other suitable covers) arranged to provide air cir-
culation.
Do not use plastic sheeting for outdoor storage.
Plastic may be used for indoor storage. However,
when used outdoors, moisture can condense on
the inside of the plastic and cause ferrous metal
surfaces to rust and/or pit aluminum surfaces. If a
unit is stored outside for any extended period of
time, severe corrosion damage can result.
The stored engine should be inspected periodically. If
there are any indication of rust or corrosion, corrective
steps must be taken to prevent damage to the engine
parts. Perform a complete inspection at the end of one
year and apply additional treatment, as required.
Storage Procedures A7-11