Westerbeke WPDS-20 Technical Manual page 21

20
CAUTION: The use of different brands of
lubricating oils during oil changes has
been known to cause extensive oil sludg-
ing and may in many instances cause com-
plete oil starvation.
6. Start engine and run for 3 or 4
minutes. Stop engine and check oil
filter gasket for leaks. Check oil
sump level. This is important as it
may be necessary to add oil to com-
pensate for the oil that is required
to fill the engine's internal oil
passages and oil filter. Add oil as
necessary. Change oil in transmission.
Use SAE 30, High Detergent Lubricating
Oil, Service DG, DM, or DS. Do not
overfill. See note below.
IMPORTANT NOTE:
IT IS MANDATORY THAT THE CHECKS 3, 4, 5
AND 6 BE ATTENDED TO WHEN TOTAL OPERATING
TIME REACHES 150 HOURS. IN SOME INSTANCES,
THIS TOTAL IS REACHED BEFORE END OF SEASON.
7. Clean Air Filter. The time period for
replacing the air filter depends on
operating conditions, therefore, under
extremely dirty conditions, the season-
al frequency should be increased. The
correct time periods for replacing the
filter will greatly assist in reducing
bore wear, thereby extending the life
of the engine.
8. Check engine for loose bolts, nuts,
etc.
9. Check sea water pump for leaks.
10. Wash primary filter bowl and screen.
If filter bowl contains water or sedi-
ment, filter bowl and secondary oil
fuel filter need to be cleaned more
frequently.
11. Replace secondary fuel filter element.
12. Replace air filter.
END OF SEASON SERVICE
1. Drain fresh water cooling system by re-
moving the surge tank pressure cap and
opening all water system petcocks.
2. Remove zinc rod (usually located in
heat exchanger) and see if it needs
replacing. The zinc rod will take
care of any electrolysis that may occur
between dissimilar metals. Insert new
zinc if necessary.
3. Fill fresh water cooling system with
antifreeze of a reputable make. (Refer
to Cold Weather Precautions.)
4. Start engine. When temperature gauge
indicates 175
0
F, shut engine down and
drain lubricating oil. Remove and re-
place filter. Fill sump with High De-
tergent Lubricating Oil.
5. Remove air filter. Carefully seal air
intake opening with waterproofed adhes-
ive tape or some other suitable medium.
6. Seal the exhaust outlet at the most ac-
cessible location as close to the en-
gine as possible.
7. Remove injectors and spray oil into
cylinders.
8. Replace injectors with new sealing
washer under each injector. Turn engine
slowly over compression.
9. Top off fuel tank completely so that no
air space remains, thereby preventing
water formation by condensation.
10. Leave fuel system full of fuel.
11. Change fuel filters before putting the
engine back in service.
12. Wipe engine with a coat of oil or
grease.
13. Change oil in transmission.
14. Disconnect battery and store in fully
charged condition. Before storing the
battery, the battery terminals and
cable connectors should be treated to
prevent corrosion. Recharge battery
every 30 days.
15. Check alignment.