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2-4
SECTION 2
DRIVING YOUR MOTOR HOME
PARKING BRAKES
The parking brakes are applied by pulling out-
ward on the large yellow knob on the dash to the
left of the steering column. Push the knob in to
release the brakes.
Use the parking brakes whenever the vehicle
is parked. Never try to drive the vehicle with the
park brake applied. This can cause excessive
wear on the brakes and may damage the transmis-
sion.
NOTE: It is normal to hear an occasional burst
of air pressure from the rear of the vehi-
cle. This is an automatic moisture purg-
ing feature of the air brake system. See
the Brakes section of your Spartan chas-
sis manual for instructions on periodic
draining of brake air tank.
JACOBS
®
EXTARDER™ ENGINE
EXHAUST BRAKING SYSTEM
To Use the Exhaust Brake:
The exhaust brake
activation switch is located on the lower left side
of the dash. Press and release the ON side of the
switch to activate the exhaust brake system. The
exhaust brake will operate whenever you let up
on the throttle pedal while the switch is ON.
Press and release the OFF side of the switch to
deactivate the exhaust brake system and return to
chassis brakes alone.
How It Works:
The Jacobs
®
Extarder
TM
is a
device that generates “braking” power by con-
trolled restriction of the engine’s exhaust gas
flow.
When the exhaust brake is activated, a valve
closes off the engine’s exhaust causing the ex-
haust back pressure to increase, which causes the
vehicle to slow down.
The increased back pressure would normally
stop the engine except the forward momentum of
the vehicle keeps the drivetrain and the engine
turning.
This controlled back pressure helps to regulate
a vehicle’s downhill speed, such as on mountain-
ous or hilly roads. It also provides “braking” on
level or near-level roads.
HAZARD WARNING
LIGHTS
The hazard warning flasher switch is located
on the underside of the steering column near the
Parking Brake Knob
Do not activate the engine exhaust
braking system while on icy or
extremely wet roads or in any other
situation where abrupt deceleration
could cause skidding or loss of vehi-
cle control.
Exhaust Brake Switch
WARNING