Breaking In; Operation Of A New Engine; Check Points For Break-In - Doosan DE08TS Manual

Breaking in

Preparations for breaking-in
1. Fill of new engine oil through the oil filler cap.
2. When measuring the oil level with the oil level
gauge with the engine mounted, the oil level must
indicate about 10mm above the max. line.
3. Connect water hoses and fill up cooling water.
4. Connect the fuel hoses to the fuel tank and to
top(radiator or surge tank).
Check the air bleeding of the fuel system.
5. Connect the electrical systems such as starter, air
heater, etc. with power source.

Operation of a new engine

(Break-In)
Because the sliding surfaces of a new engine are not
lapped enough, the oil film can be destroyed easily
by overload or overspeed and the engine life-time
may be shortened.
Therefore the following things must be obeyed by all
means.
Up to the first 50 hours
1. Engine should be run at fast idling until the tem-
perature of the engine becomes normal operating
condition.
2. Overload or continuous high speed operation
should be avoided.
3. High speed operation with no load should be pre-
vented.
4. Abrupt start and stop of the engine should be
avoided.
5. Engine speed must be under 70% of its maximum
speed.
6. Maintenance and inspection must be accom-
plished thoroughly.
DE08TS Diesel Engines

Check points for break-in

During the break-in (the initial running of the engine)
period, be particularly observant as follows :
a. Check engine oil level frequently. Maintain oil level
in the safe range, between the "min." and "max."
marks on dipstick.
NOTE : If you have a problem getting a good oil
level reading on dipstick, rotate the level gauge 180°
and re-insert for check.
b. Watch the oil pressure warning lamp. If the lamp
blinks, it may be oil pick-up scrreen is not covered
with oil. Check oil level gauge. Add oil to the oil
pan, if required. Do not overfill. If level is correct
and the status still exists, see your DEALER for
possible switch or oil pump and line malfunction.
NOTE :Oil pressure will rise as RPM increases, and
fall as RPM decreases. In addition, cold oil will gen-
erally show higher oil pressure for any specific RPM
than hot oil. Both of these conditions reflect normal
engine operation.
c. Watch the engine water temperature gauge and
be sure there is proper water circulation. The
water temperature gauge needle will fluctuate if
water level in expansion tank is too low.
At the end of the break-in period, remove break-in
oil and replace the oil filter. Fill oil pan with recom-
mended engine oil. Refer to following table.
<Recommended Engine oil and capacity>
Engine oil capacity
Model Max.line (lit) Min line (lit) Total (lit)
DE08TS 16
68
Recommend oil
API No.
13 18.5 API CH-4 above
Maintenance