Specifications

FRONT BRAKE CHAMBERS
The front brakes shall be provided with MGM type 30 brake chambers.
REAR BRAKE CHAMBERS
The rear axle shall include TSE 30/36 brake chambers which shall convert the energy of compressed air
into mechanical force and motion. This shall actuate the brake camshaft, which in turn shall operate the
foundational brake mechanism forcing the brake shoes against the brake drum. The TSE Type 36 brake
chamber has a 36.00 square inch effective area.
AIR COMPRESSOR
The air compressor provided for the engine shall be a Wabco
®
SS318 single cylinder pass-through drive
type compressor which shall be capable of producing 18.7 CFM at 1200 engine RPMs. The air
compressor shall feature a higher delivery efficiency translating to more air delivery per horsepower
absorbed. The compressor shall include an aluminum cylinder head which shall improve cooling,
reduce weight and decrease carbon formation. Superior piston and bore finishing technology shall
reduce oil consumption and significantly increasing the system component life.
AIR GOVERNOR
An air governor shall be provided to control the cut-in and cut-out pressures of the engine mounted air
compressor. The governor shall be calibrated to meet FMVSS requirements. The air governor shall be
located on the air dryer bracket on the left frame rail behind the battery box.
MOISTURE EJECTORS
Manual pet-cock type drain valves shall be installed on all reservoirs of the air supply system.
AIR SUPPLY LINES
The air system on the chassis shall be plumbed with color coded reinforced nylon tubing air lines. The
primary (rear) brake line shall be green, the secondary (front) brake line red, the parking brake line
orange and the auxiliary (outlet) will be blue.
Brass compression type fittings shall be used on the nylon tubing. All drop hoses shall include fiber
reinforced neoprene covered hoses.
AIR TANK SPACERS