Monaco 2008 Knight Owner's Manual download pdf (Page 196)

CHASSIS INFORMATION — 10

192

2008 KNIGHT

RPM.

Test conrms that the park brake is engaged

and holding.

Air Governor Cut-in Test:

The air governor controls action of the air

system pump. This will conrm the air governor

cut-in pressure setting.

1. Start engine.

2. Run engine until a chuff (air release) is

heard from the air dryer.

3. Fan (apply/release in quick succession)

service brake pedal until system

pressure is between 110 and 115 psi.

Air governor cut-in pressure is approximately

115 psi.

Brake Grab Test:

This test will verify brake friction torque between

the front wheels. This test requires a rapid and full

pressure application of service brake pedal. Use

proper precautions to prevent movement of cargo

or other items that are not secured. This is a single

vehicle test. Select deserted and level road surface

(preferably a large and empty parking lot). Road

crown, depending on severity, may affect test

results.

1. Start engine.

2. Run engine until a chuff (air release) is

heard from the air dryer.

3. Release park brake.

4. Accelerate to approximately 5 mph.

5. Rapidly and rmly apply service

brake pedal to bring vehicle to an

abrupt stop.

The steering wheel will not pull to the

left or right if front wheel braking torque is

symmetrical.

Air Coupler

Provided for convenience is a remote

air supply coupler located in the generator

compartment. This female tting will accept

type C automotive connectors. This auxiliary

air tting may be used to inate tires, air

mattresses or other pneumatic items. This tting

is not designed to charge the air system on the

motorhome. The air supply for the auxiliary air

tting is charged from the front air tank through

a pressure protection valve.

To use this feature:

Slide the locking collar back. Using a

rm grip, fully insert the air tting into

the auxiliary air supply. Release the

locking collar to retain the air tting after

the tting is properly inserted.

To remove tting:

Firmly grip the air hose near the tting to

prevent recoil.



Slide the locking collar back to release

tting.

NOTE

Due to air pressure restrictions in the

pressure protection valve and tire stem

valve, the maximum amount of tire

pressure achieved when the system is

used to fill a tire is approximately 115 psi

with the air system on the motorhome

charged to 130 psi. Maximum outlet air

pressure is achieved when the air system

completes the fill cycle indicated by the

purge cycle of the air dryer. Use a short

hose to reduce tire fill time.

AIR DRYER

The air dryer, located between the frame rails

next to the transmission, removes moisture from

the compressed air system to prevent freezing

of brakes or other pneumatically operated

items. The three functions of the air dryer are

cooling, ltering and drying the system air. This

prevents valve and seal damage or wash away of

lubricants as well as freeze damage to the system

components.

Air Dryer Cycle:

The governor turns the compressor on when

the supply tank pressure drops below cut-in

pressure. Compressed air then passes into the

air dryer at the inlet port. Moisture-laden air

and contaminants pass through the desiccant.

Moisture is retained by the desiccant and collects

in the base of the dryer. When the compressor

reaches cut-out pressure (approximately 130

psi) the purge valve opens and the dryer purges

and expels water collected in the dryer base.



090435b

Located in generator compartment

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Monaco 2008 Knight Owner's Manual Page 196

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