Bendix Commercial Vehicle Systems BRAKE APPLICATION GUIDELINES - Manual (Page 31)

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Defi nitions
„ Transporting people in and around city or suburban areas
„ Operation on well-maintained highways and residential streets made of asphalt or concrete
„ Very frequent stops (nine per mile) are considered typical
Typical Vehicle Types
Airport Shuttle City Bus
Shuttle Bus Trolley
Vehicle Confi gurations
4 x 2 straight coach
General Requirements
• Anti-compounding air system
• Cam same operation for all steerable axle brakes
• Air chamber bracket assemblies with gusset for all transit coach applications, see page 45
• Air chamber bracket assembly gusset and additional camshaft bracket support see page 45, attached to the axle housing
when the:
a. Brake centerline to air chamber centerline distance (BCCC dimension) is greater than 343 mm [13.5”]
b. Application use a type 30/36 or 36/36 Spring brake chambers
c. Camshaft brackets with BCCC dimension of less than 8.12" does not require a gusset or additional support..
d. Super Single Tire (Wide Base)
Note: The above support can be supplied by BSFB or the vehicle manufacturer but
must be approved by BSFB Application Engineering Department.
• Applications for use in countries other than the USA and Canada must be reviewed by BSFB Application Engineering.
• Vehicle manufacturer is responsible for air system design, parking and stopping distance performance.
• For all brake models the camshaft input torque is limited to 2545 N•m [22,500 in-lbs].
• Extra heavy duty (severe service) Brake drum on steer, drive and auxiliary axles.
General Recommendations
• Cam same for all brake assemblies
• Dust shields for all applications
• Use Auxiliary retarders per TMC RP636
• Brake drum / Rotor material specifi cation per SAE J431. Drum / rotor surface fi nish 4.57 micrometer [180 max microinch]
and .38 mm [.015"] runout, when mounted on a hub rotated on bearings. See notes section for Minimum Drum Weight
requirements
• Brake air system balance per TMC RP632
Transit Coach