User's Manual

Replacing Spring Brake Chamber

1. Check that the new spring brake chamber is of the correct

type.

Note: There must be an inner boot at the push rod.

Replacing Spring Brake Chamber

3. Install the pipe ﬁ ttings to the new spring brake chamber.

4. Check that the mounting faces of the spring brake chamber

and the caliper are clean.

5. Lubricate the end of the push rod with grease.

6. Fit the new spring brake chamber with nuts and washers.

Torque to specs on page 5.

7. Fit the air hoses to the spring brake chamber.

IMPORTANT: Do not swap the air hoses.

8. Apply air pressure (min. 6 bar [87 psig]) to the parking brake.

Uncage the parking spring.

9. With the service brake applied and the parking brake

released, check the air hoses and connectors of the spring

brake chamber for tightness and damage.

10. Install the wheels in accordance with the vehicle

manufacturer's instructions.

IMPORTANT: Make sure that the contact

surfaces between the wheels and hub are

clean and free of distortion. Follow the vehicle

manufacturer's instructions on tightening torques.

11. Check that the brake hoses do not pinch during full wheel

articulation.

12. Remove the axle support and the wheel chocks and lower

the axle in accordance with the vehicle manufacturer's

instructions.

1 – New spring brake chamber

2. Check that the parking spring is caged in accordance with

the manufacturer's instructions.

Replacing Spring Brake Chamber