Meritor Automatic Brake Slack Adjuster Position (BSAP)
- Details
- Parent Category: Industry
- Category: Industry News
- Last Updated on Saturday, 21 July 2012 20:23
- Published on Monday, 16 July 2012 22:31
- Written by Editor
- Hits: 357
There are four (6) different Meritor ASA templates available and they are not interchangeable.
|
Template Color |
Part Number |
Use |
|
Green |
TP-4788 |
Air Disc Brake with offset clevis |
|
Yellow |
TP-4789 |
Air Disc Brake with straight clevis |
|
Dark Brown |
TP-4786 |
Truck or tractor drum brake with 1.38 clevis |
|
Tan |
TP-4787 |
Trailer drum brake |
|
White |
TP-4781 |
Coach drum brake with 7-inch or bolt-on slack adjuster |
|
Grey |
TP-10130 |
Truck or tractor drum brake with 1.30 clevis |
When adjusting a Meritor ASA you must use the template that correctly matches the clevis. If the template and clevis are not matched, the slack adjuster will not adjust the brake properly. 
NOTE: Meritor “Stroke Sensing” ASA’s must be set at a 101 degree angle on trucks and tractors, regardless of the “pin-to-pin” dimension.
Proper ASA set-up will allow a clearance of .030 between the lining and the brake drum. Mismatching of the template with the clevis may result in a slack adjuster that “under-adjusts” (110°, 115°, etc.) causing stopping distances to increase, or, if the slack adjuster “over-adjusts” (95°, 90° etc.), the clearance may tighten causing the linings to “drag” and damage the brake.
For more information regarding this matter, please refer to Meritor Maintenance Manual 4, Section 5, pages 31 thru 34, or contact your local Meritor Service Representative.
Submitted by:
Wayne Seaman, TruckSavvy.com and Meritor
