9.4. Breaking-In
9.4.1. 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
Engine should be run at fast idling until the temperature of the engine becomes normal
operating condition.
Overload or continuous high speed operation should be avoided.
High speed operation with no load should be prevented.
Abrupt start and stop of the engine should be avoided.
Engine speed must be under 70% of its maximum speed.
Maintenance and inspection must be accomplished thoroughly.
9.4.2. 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 dipstick
180
˚
and re-insert for check.
b) Watch the oil pressure warning lamp. If the lamp blinks, it may be the oil pick-up screen is
not covered with oil. Check oil dipstick. 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 generally 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 recommended engine oil. Refer to following table.
<Engine Oil capacity>
- 111 -
Oil pan (only)
P158LE
28 liter
P180LE
35 liter
P222LE
40 liter
