maintained within 1/4”. This dimension can be
checked with the vehicle loaded or empty.
• The leveling valves (or height control valves) play a
large part in ensuring that the total air spring system
works as required. Clean, inspect and replace if nec-
essary.
• Make sure to check shock absorbers for leaking
hydraulic oil and worn or broken end connectors. If a
broken shock is found, replace it immediately. The
shock absorber will normally limit the rebound of an
air spring and keep it from overextending.
• Check the tightness of all mounting hardware (nuts
and bolts). If loose, tighten. Do not over-tighten.
Cleaning
The approved cleaning method is to use soap and water, methyl alcohol,
ethyl alcohol and isopropyl alcohol. Unapproved cleaning methods include
all organic solvents, open flames, abrasives and direct pressurized steam
cleaning.
The motorhome is equipped with air brakes using much the same system
as over the road trucks. This type of braking system is very efficient. Proper
maintenance and lubrication is the key to keeping your brake system in prop-
er working order. The brake system on the motorhome is designed to accom-
modate the weight of the vehicle and towing loads. This system differs from
conventional automotive hydraulic braking system and should be treated dif-
ferently.
When operating a vehicle equipped with air brakes considerations need to
be given to stopping distances and air system pressures. The heavier the
vehicle the greater the kinetic energy. The motorhome requires longer stop-
ping distances. Each brake application uses air from the air system. Give
attention to the air gauge as well as the surroundings. Engine speed is direct-
ly proportional to how fast the air system is replenished. Prepare for downhill
grades. Grades are generally posted in percentages. It may be necessary to
select a lower gear. Make use of the engine or exhaust brake. When making
brake applications use individual short applications down long hills rather
than “riding” the brakes. This will extend the life of the brake linings. Avoid
overheating the brakes. Hot brakes have less stopping power. When maneu-
vering the motorhome around in small areas, or backing into spaces, several
individual brake applications might be made. Watch the air gauge. Plan
ahead when parking to make it easier on yourself. When preparing to back
into a space, swing the motorhome so it is aligned with the parking slot
before backing up.
Chassis Information
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WINDSOR
10•265
BRAKE SYSTEMS
- AIR BRAKES
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