Author: Frank Fazzalari
Service Brake Application Time
Elapsed time between the depression of the brake treadle and the delivery of 60 psi to all of the service chambers per US Regulations FMVSS 121 (49CFR 571.121).
Anti-Compounding
| ‘Compounding’ is the simultaneous actuation of both the spring (emergency) and service brakes. Compounding can result in over-torque of the foundation brakes causing problems such as bent chamber push rods, broken camshafts, cracked drums, lining damage, damaged chamber brackets, etc.
Anti-compounding is a feature that prevents compounding and is included in all current Sealco spring brake control valves. |
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