Is the air brake too slow to operate or release?

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Go to Step 2

System OK

Check the air supply to the actuator.

Is the air supply to the actuator adequate?

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Go to Step 3

Go to Step 7

Is the actuator spring damaged?

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Go to Step 8

Go to Step 4

Is the actuator piston damaged?

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Go to Step 9

Go to Step 5

Is the ball joint damaged?

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Go to Step 10

Go to Step 6

Is there excessive carbon build-up?

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Go to Step 11

Go to Step 1

1. Check all the air connections related to the air brake for complete seals.
2. Repair any connections that are not sealing properly.
3. Check the output of the air compressor.
4. Repair or replace the air compressor as necessary.
5. Recheck the air supply at the air brake.

Is the air supply to the actuator adequate?

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Go to Step 3

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1. Check the actuator spring for damage.
2. Replace the actuator spring, if necessary.

Is the actuator spring in working order?

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Go to Step 4

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1. Check the actuator piston for damage.
2. Replace the actuator piston, if necessary.

Is the actuator piston in working order?

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Go to Step 5

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1. Check the ball joint for damage.
2. Replace the ball joint, if necessary.

Is the ball joint in working order?

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Go to Step 6

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1. Remove the brake assembly.
2. Clean the bore of the air brake assembly in order to remove excessive carbon build-up.
3. Clean the carbon from the butterfly valve.
4. Install the exhaust brake assembly.

Is the excessive carbon build-up removed?

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Go to Step 1

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