Onan DJA Series User Manual

OPERATION
CRANKCASE OIL
Use an oil with the API designation CD/SE or CD/SD.
However, to reduce oil consumption to a normal level
in the shortest time possible on a new or rebuilt engine,
use CC oil for the first fill only (SOhours). Then use
the recommended oil only. Select the correct SAE grade
oil by referring to the following.
TEMPERATURE
Above 30
0
F
0
o
F to 30
o
F
Below 0
o
F
GRADE
SAE 30
SAE 10W or 5W-30
SAE 5W-30
Multigrade oils are recommended for temperature of
30
0
F and below, but they are not recommended for
temperatures above 30
0
F. When adding oil between oil
changes, it is preferable to use the same brand as in
the crankcase. Various brands of oil may not be com-
patible when mixed together.
NOTE: // the oil supply in your local area still has
the API designations ML, MM, MS, DC, DM and DS,
use an oil with the DS designation which has passed
the Series 3 Test and at least Sequence I of the Auto-
motive Manufacturer's MS Sequence Tests. To reduce
oil consumption to a normal level in the shortest time
on a new or rebuilt engine, use DG or DM oil (passing
the MS Sequence Tests) for the first fill only (SOhours).
Then use the recommended oil. See SERVICE AND
MAINTENANCE Section for suggested oil changes.
OIL BATH AIR CLEANER (Optional)
Use the same grade of oil in the air cleaner as is used
in the crankcase. The proper level is marked on the air
cleaner.
RECOMMENDED FUEL
The type of fuel depends on operating conditions. Use
No. two diesel fuel for best economy. Use No. one
diesel fuel:
1. When ambient temperature is below 32
0
F.
2. During long periods of light engine load.
3. If preferred by user.
Use low sulfur content fuel having a pour point (ability
to filter) of at least 10° below the lowest expected
temperature. Keep fuel clean and protected from adverse
weather. Leave some room for expansion when filling
the tank.
""^^J^^JJ^ Keep the fuel system clean. The long
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INITIAL START
Check the engine to make sure it has been filled with
oil and fuel. If necessary to prime a dry fuel system,
return the priming level to the disengaged position after
priming.
IMPORTANT: This unit has been run and tested for
approximately four hours at the factory. Additional
break'in time is required and will vary depending upon
load conditions, oil used, etc.
Run as follows:
1. No load 15-20 minutes
2. One-third load 30 minutes
3. Two-thirds load 2to3 hours
Then regular operation can be resumed. Avoid light load
operation during the following several hours for best
ring seating to control oil.
STARTING
in ambients above
1. When starting a cold engine
55
0
F, preheat for 20seconds.
2. Continue to hold preheat switch:
a. Push the fuel solenoid to its ON position.
b. Press the START switch.
3. Release start switch after engine starts and reach-
es speed.
4. Oil pressure should read at least 20psi. Pressure
relief valve-is not adjustable.
When starting at temperatures below 55
0
F, or under
high humidity conditions, refer to suggested starting
aids in Low Temperatures paragraph.
When restarting engine after short periods of shutdown,
preheating is usually not necessary.
STOPPING
Disconnect as much load as practical from the engine
before shutdown. Push the fuel solenoid switch to its
OFF position (this de-energizes the solenoid, closing
the throttle).
CAUTION
life built into the injection system
can be destroyed by one moment of carelessness.
' Carbon in the exhaust system will
, occur in diesel engines operated
consistently at light loads. Operate the engine at full
load occasionally (or for about five minutes just before
stopping) to clean out the exhaust system.
10

Onan DJA Series Specifications

General

Brand	Onan
Model	DJA Series
Category	Engine
Language	English