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Determining correct push rod length, Caging and determining correct push rod length – SAF-HOLLAND XL-AM20006BM Brake and Service Chamber User Manual

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XL-AM20006BM-en-US · 2014-04-22 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, SAF,

and logos are trademarks of SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.

4.3 Inspection of the alignment

of Pressure Plate

Visual Inspection:

This inspection procedure helps to ensure the pressure plate
can be caged manually (without air) with the universal release
bolt. By removing the dust plug and using a flashlight, look
through the spring housing access hole to determine if the
pressure plate tool access hole is able to accept the release
bolt. If there is doubt that the pressure plate is able to accept
the release tool bolt, physical inspection could be necessary.

Physical Inspection:

Remove the dust plug from the release tool access hole in
the center of the spring housing and remove the release
tool assembly from its holder on the adapter base or spring
housing. Insert the release tool bolt through the spring
housing's access hole and into the pressure plate. Attempt
to engage the release tool bolt on the pressure plate by
turning the bolt 1/4 turn clockwise and pulling outward.
If the release tool bolt is engaged properly on the pressure
plate, it will NOT turn more than 1/4 turn clockwise and will
NOT pull outward more than .75" (19 mm).

5. Determining Correct Push

Rod Length

1. With the vehicle on a level surface, set parking brakes

and chock drive tires to prevent the vehicle from rolling
forward or backward.

Failure to properly secure the vehicle prior
to commencing work could create a crush
hazard which, if not avoided, could result
in death or serious injury.

2. Ensure that the brake is fully caged.

Failure to cage the spring brake
before installation could prevent the
main spring from fully engaging the
foundation brake components which,
if not avoided could cause insufficient
braking force resulting in death, serious
injury or property damage.

3. If replacing only one spring brake, it is necessary to

verify that the other spring brake(s) is properly adjusted
as specified in Section 3.

Caging and Determining Correct Push Rod Length