OPERATING THE APU (continued)
4. Shut down vehicle main engine (p. 2-
99). Turn MASTER switch to OFF in
Attach slave cable (5) to slave receptacle
(4) on both vehicles.
Turn your vehicles MASTER switch to
ON and start the APU (p. 2-118).
7. Allow the APU to warm up for three
minutes, then turn APU GENerator
switch (6) to ON.
8. Turn on MASTER switch in supported
vehicle, to charge batteries.
Starting your own vehicle or slave-starting
another vehicle with APU GENerator
switch set to ON while the APU is running
can cause damage to APU STARTER/
GENERATOR. When starting your vehicle
or slave-starting another vehicle, make
sure APU GENerator switch is set to OFF.
Slave-starting another vehicle with the
functioning vehicles main engine on and
being revved can cause damage to its
charging system. To prevent this, have
the main engine at idle (600 rpm) or turned
You may start your vehicles main engine to increase power
generation. Make sure that APU GENerator switch is set to
OFF before you start main engine. Once the main engine
is started, reset GENerator switch to ON.