Perkins 904D-E28T Operation And Maintenance Manual page 45

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Improper jump start cable connections can cause
an explosion resulting in personal injury.
Prevent sparks near the batteries. Sparks could
cause vapors to explode. Do not allow jump start
cable ends to contact each other or the engine.
Note: If possible, first diagnose the reason for the
starting failure. Refer to Troubleshooting, "Engine
Will Not Crank and Engine Cranks But Will Not Start"
for further information. Make any necessary repairs.
If the engine will not start only due to the condition of
the battery, either charge the battery, or start the
engine by using another battery with jump-start
cables. The condition of the battery can be
rechecked after the engine has been switched OFF.
NOTICE
Never attempt to start an engine from an external
power source such as electric welding equipment,
which has a voltage that is unsuitable for engine
starting and will damage the electrical system.
For 904D-E28T industrial engines, use a 12 VDC bat-
tery source to start the engine.
For 904D-E36TA industrial engines, ensure that a 12
VDC or 24 VDC battery source is used to start the
engine.
NOTICE
Using a battery source with the same voltage as the
electric starting motor. Use ONLY equal voltage for
jump starting. The use of higher voltage will damage
the electrical system.
Do not reverse the battery cables. The alternator can
be damaged. Attach ground cable last and remove
first.
Turn all electrical accessories OFF before attaching
the jump start cables.
Ensure that the main power switch is in the OFF posi-
tion before attaching the jump start cables to the en-
gine being started.
1. Turn the start switch on the stalled engine to the
OFF position. Turn off all the engines accessories.
2. Connect one positive end of the jump-start cable to
the positive cable terminal of the discharged
battery. Connect the other positive end of the
jump-start cable to the positive cable terminal of
the electrical source.
3. Connect one negative end of the jump-start cable
to the negative cable terminal of the electrical
source. Connect the other negative end of the
jump-start cable to the engine block or to the
chassis ground. This procedure helps to prevent
potential sparks from igniting the combustible
gases that are produced by some batteries.
Note: The engine ECM must be powered before the
starting motor is operated or damage can occur.
4. Start the engine in the normal operating
procedure. Refer to this Operation and
Maintenance Manual, "Starting the Engine".
5. Immediately after the engine is started, disconnect
the jump-start cables in reverse order.
After jump starting, the alternator may not be able to
recharge fully batteries that are severely discharged.
The batteries must be replaced or charged to the
proper voltage with a battery charger after the engine
is stopped. Many batteries which are considered
unusable are still rechargeable. Refer to Operation
and Maintenance Manual, "Battery - Replace" and
Testing and Adjusting Manual, "Battery - Test".
After Starting Engine
After starting, the engine may be held at low speed
for a duration between 1 and 60 seconds to allow
engine systems to stabilize. Holding the engine
speed low is controlled by the Electronic Control
Module (ECM). The duration will depend on ambient
temperature, time since last run and other factors.
Note: In ambient temperatures from 15° to 20°C
(59° to 68°F), the warm-up time is approximately 20
to 30 minutes. In temperatures below 15°C (59°F),
additional warm-up time may be required. In
temperatures greater than 20° C (68° F), warm-up
time may be less.
When the engine idles during warm-up, observe the
following conditions:
Do not check the high-pressure fuel lines with the
engine or the starting motor in operation. If you
inspect the engine in operation, always use the
correct inspection procedure to avoid a fluid
penetration hazard. Refer to Operation and
Maintenance Manual, "General hazard Information".
• Check for any fluid or air leaks at idle rpm and at
one-half full rpm (no load on the engine), before
operating the engine under load. This check may
not be possible in some applications.
45
Operation Section
After Starting Engine
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