User's Manual

Date of Origin – 02/01/08

BRAKE CONTROLS

Proper operation of the brake system requires a good, clean seal between the glad hands. In-

spect the rubber washer on the glad hands for damage. Inspect the glad hands for cracks in the

metal parts. The glad hands have a screen filter and must be cleaned. Check air hoses for cracks

and leaks. Check the operation of the brakes and slack adjusters. Drain the water from the air

brake system each day by opening the drain cocks on the bottom of the air tank(s). Periodically

check and clean the filter element on the air line filter, mounted directly behind the Control side

glad hand. Observe the ABS status indicator light for proper operation as found under the ABS

heading in the SAFETY section.

IN-LINE AIR FILTER

This trailer is equipped with an in-line air filter, Control side, which is located on the nose of the

trailer, to assist in protecting the air system brake valves. The number one cause of ABS valve failure

is contamination in the air supply from the tractor. This filter will help in minimizing those problems. To

operate properly and provide the most protection possible, the filter should be inspected and

cleaned every 3 to 4 months. Proper use and maintenance of the filter will help extend the life of the

ABS ECU and will extend the warranty on the ABS ECU.

AIR SYSTEM COLD WEATHER OPERATION

Reservoir Draining – Daily reservoir draining is the most basic step in reducing the possibility of

freeze up.

Thawing Frozen Air Lines

1. Maintain freeze prevention devices to prevent frozen air lines. Daily check evaporators or

injectors. Check the air dryer for proper operation and change the desiccant when needed.

2. Thaw out frozen air lines and valves by placing vehicle in a warmed building. This is the

only method for thawing that will not cause damage to the air system or its components.

3. Do not apply an open flame to air lines and valves. Beyond causing damage to the internal

non-metallic parts of valves and melting or burning non-metallic air lines, THIS PRACTICE

IS UNSAFE AND CAN RESULT IN VEHICLE FIRE.

CAUTION! Do not pour any alcohol into gladhands. Doing this will result in valve

failure and will void the warranty. Fluid in air lines can also cause a fluid lock and keep

Trailer is equipped with an in-line filter to

assist in protecting the air system brake valves.

The in-line filter is serviceable and should be

inspected and cleaned every 3 to 4 months.

See TP-03100 for maintenance instructions.

www.meritorwabco.com

899 201 842 4

NOTICE:

Rev 9/08