How do you remove a rear brake chamber?
With a standard ¾-inch wrench, take the chamber caging tool off the side of the brake chamber. Remove the plug from the backside of the chamber. Make sure to position the caging tool into the brake chamber’s back, pushing it in as far as it can go. Rotate the caging tool clockwise until it latches into a groove.
What does 30 30 mean on a brake chamber?
The most common actuator size is the 30/30 double diaphragm spring brake (DDSB), says Stocksdale. This indicates a Type 30 service chamber combined with a Type 30 parking brake, where the service chamber works during normal service braking and the spring brake is used for parking and emergency braking.
What is the maximum readjustment limit for a type 30 brake chamber?
The most common type of air brake chamber used on trucks and trailers is the Type 30. These chambers have a maximum available stroke of 2½ inches (65 mm). A long stroke Type 30 is designated Type 30LS, and has a maximum available stroke of three inches.
What kind of brakes does a MCI 12 have?
Emergency: Air operated Bendix-Westinghouse DD-3 emergency and parking brakes are used at rear driving axle. 24 volt negative ground. Two heavy duty 25 plate, 204 ampere hour capacity batteries Air ride type, which operates automatically and maintaines a constant ride height MCI 12 1990 – 2005 plus more……
When do you use the service brake chamber?
The service brake chamber is used when only the application of service brake air is required on an axle.
How tall are the brakes on a MCI bus?
Two heavy duty 25 plate, 204 ampere hour capacity batteries Air ride type, which operates automatically and maintaines a constant ride height MCI 12 1990 – 2005 plus more…… Service: Air operated two shoe service brakes are installed at each axle.
Can a spring brake piggyback replace an air brake chamber?
You will find service brake chambers on steer axles, some rear axles, and old trailers that use a relay emergency valve to apply parking air pressure to the service chamber. The spring brake Piggyback is a replacement part for repair of a spring brake chamber.