Holiday Navigator 2003 Owner's Manual page 453

1. With a tape measure, record the distance between the flat surface
of one brake chamber and the slack adjuster clevis pin.
2. With wheel chocks in place, start and run the engine until the air
system is fully pressurized. If necessary, charge the spring brakes
by releasing the emergency brake. Stop the engine.
3. Have an assistant make a brake application. With a tape measure,
record the distance between the flat surface of that same brake
chamber and the clevis pin on the slack adjuster.
4. Repeat this procedure for all the brake chambers. Start the engine
if the air system pressure drops to 80 psi.
5. Subtract the distance measured in line 1 from the distance
measured in line 3. Record the measurement. Stamped on each
brake chamber is the numerical Type/Size rating. Record the brake
chamber type with the distance measured for that brake chamber.
Use the brake chamber chart to compare the measured distance
against the correct rod extension length. If the distance does not
meet or exceeds the specification, adjust the slack adjuster to
obtain the correct extension length.
Tag axle only.
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N A V I G A T O R 2 0 0 3
090350
Chassis Information
1 0 • 4 5 3