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the
Acterra
®
Workshop Manual
for inspection,
troubleshooting, and repair procedures.
4. Measure the applied chamber stroke. See
Table 3 for the proper stroke for the type of
chamber being used. If the stroke is too short,
the brakes may drag or will not fully apply. Check
for improper operation or adjustment of the auto-
matic slack adjuster. See Group 42 of the
Acterra
®
Workshop Manual
for inspection and
troubleshooting procedures.
5. Start the engine and build air pressure to at least
100 psi (689 kPa). Shut down the engine.
6. Check all of the foundation brake components for
damage, wear, and loose or missing parts. Re-
pair as needed. See Group 42 of the
Acterra
®
Workshop Manual
for repair procedures.
Brake Chamber Stroke Specifications
Chamber
Max Applied Stroke: inch (mm)
Manufacturer Type
*
Size
†
Gunite
Standard Stroke
9
1-3/8 (35)
12
16
1-3/4 (44)20
24
30 2 (51)
36
‡
2-1/4 (57)
Long Stroke
16
2 (51)
20
24 (2-1/2 inch rated
stroke)
24 (3 inch rated
stroke)
2-1/2 (64)
30
Haldex
Standard Stroke
12 1-3/8 (35)
16
1-3/4 (44)20
24
2-1/2-Inch Extended Stroke 24 2 (51)
3-Inch Extended Stroke 24 2-1/2 (64)
Standard Stroke 30 2 (51)
Long Stroke 30 2-1/2 (64)
Brakes42
Acterra Maintenance Manual, October 200742/12