Pull the chamber push rod out to its limit by pulling on the slack adjuster arm by prying with a short bar. If push rod travel is more than 1 in. (12.7 mm), brakes must be adjusted.
| Brake stroke limits for clamp-type brake chambers | |||
|---|---|---|---|
| Chamber Type (size) | Stoke Limit (mm) | Stoke Limit (in.) +/- 1/32 in. | |
| 6 | 32 | 1 1/4 | |
| 9 | 35 | 1 3/8 | |
| 12 | 35 | 1 3/8 | |
| 12 LS | 44 | 1 3/4 | |
| 16 | 44 | 1 3/4 | |
| 16 LS | 51 | 2 | |
| 20 | 44 | 1 3/4 | |
| 20 LS | 51 | 2 | |
| 24 | 44 | 1 3/4 | |
| 24 LS | 51 | 2 | |
| 30 | 51 | 2 | |
| 30 LS | 64 | 2 1/2 | |
| 30 DD3 | 57 | 2 1/4 | |
| 36 | 57 | 2 1/4 | |
Note: measurement tolerance is =/- 1 mm