2-38. CAGE AND UNCAGE BRAKES.
Cage Brakes. In the event of an air pressure loss, spring brakes on
the tandem rear axles will apply the brakes. If the vehicle must be towed and there is
not enough air system pressure to compress the power spring in the spring brake
chambers to release the brakes, compress them manually. Each vehicle has four
Brake chamber contains spring under great pres-
sure. To prevent personnel injury, never work
directly behind chamber. If caging bolt will not
engage properly, spring may be broken.
Do not remove clamp ring around spring brake
chamber. It is under tension and can cause person-
nel injury if released.
When spring brakes are applied, vehicle will stop
quickly which could result in injury to personnel.
Also, vehicle cannot be driven again until malfunc-
tion is repaired and enough air supply is present for
operation of service brakes.
When caging brakes, block wheels to keep truck
from moving when brakes are released. Failure to
follow this warning may result in death or injury to
personnel or damage to equipment.