Onan DJA Series User Manual

OPERATION
CRANKCASE OIL
The oil capacity is 3 U.S. quarts (plus 1/2 quart for oil
filter). Be sure the engine is level when filling. Fill to
F (full) mark on indicator. Use a good,heavy duty deter-
gent oil classified by American Petroleum Institute for
service DS (Diesel Severe) also known as Series 3 oil.
Use the proper SAE number oil for the expected tem-
perature conditions. Do not mix brands nor grades. If
service DS oil is not available in 5W-20 viscosity, use
service DM and change oil more frequently. Alv/ays
reinstall oil indicator air tight.
IF TEMPERATURE IS
USE
Above 30
o
F
0
o
F to 30
o
F
Below 0
o
F
SAE 30
SAE 10W or 5W-20
SAE 5W-20
Do not mix brands or grades. Refer to Maintenance Section
for recommended 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.
DEUVERY
'WALVE SPRING
INJECTION
PUMP
TRANSFER PUMP
N PRIMING LEVER
FIG. 2-1
RECOMMENDED FUEL
The type of fuel depends on operating conditions. Use
No. 2 diesel fuel for best economy. Use No. 1 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 a 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. Keep the
tuel system clean. The long life built into the injection
system can be destroyed by one moment of carelessness.
BLEED FUEL SYSTEM (Initial Start)
Loosen the air bleed screw on top of the secondary filter
(early models) or remove the fuel return line (late models)
Fig. 2-1. Operate the priming lever on the fuel transfer
pump until bubbles cease to appear in the fuel. Tighten the
bleed screw (early models) or connect the fuel retum line
(late models). Important: If.the Iuel pump lobe on the cam-
shaft is up, crank the engine one revolution to permit hand
priming. When finished, retum the priming lever to the dis-
engaged position (inward) lor normal operation.
STARTING
Check the engine to make sure it has been filled with oil
and fuel. If necessary to prime a dry fuel system return
the transfer pump priming lever to the disengaged position
after priming.
Important: This unit has been run and tested fqr about 3 te
4-hours at the factory. Additional break-in time is required
and will vary depending upon load concfitions, oil used, etc.
Load during break-in should be between 1/2 load and rated
load, preferably near rated load for best results, This
procedure results in faster break-in and lower ail consump-
tion.
1. When starting a cold engine in ambients above 5S
0
F,
pre-heat for 20-seconds.
2. Continue to hold pre-heat switch:
a. Press the sfarf switch.
b. When engine reaches top cranking speed, push the
decompression solenoid switch to its' "ON" posi-
tion.
3. Release start switch after engine starts and teaches
speed.
4. Oil pressure should read at least 20-psi. Pressure
relief valve is not adjustable.

Onan DJA Series Specifications

General

Brand	Onan
Model	DJA Series
Category	Engine
Language	English