Glossary “bench bleeding” Definition:
A procedure used to bleed the air from a new or rebuilt master cylinder before it is installed in the vehicle.
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belt width
Glossary “belt width” Definition:
Distance across a belt measured at the widest point.
belt clamping action
Glossary “belt clamping action” Definition:
As related to a continuous variable transmission, the action taking place when the V-pulley sheaves clamp the drive belt.
belt cover
Glossary “belt cover” Definition:
1). Nylon cover positioned over the belts in a tire that helps to hold the tire together at high speed, and provides longer tire life. 2). A rayon, cotton, or nylon cover to protect the interior of a drive belt from the environment and absorb the wear that occurs at the belt-sheave interface. 3). Cover(s) used to protect the timing belt.
belt dressing
Glossary “belt dressing” Definition:
A prepared solution, generally in spray form, formulated for use on automotive V-belts to reduce or eliminate belt noise. It is not generally recommended for serpentine belts.
belt driven cooling fan
Glossary “belt driven cooling fan” Definition:
A rigid or flexible cooling fan is driven by a belt from the crankshaft in vehicles that have longitudinally mounted engines. Usually the belt-driven cooling fan is mounted to the front of the water pump pulley/hub.
belt pitch
Glossary “belt pitch” Definition:
The distance between two adjacent tooth centers as measured on the pitch line of a synchronous belt.
belt ride dimension
Glossary “belt ride dimension” Definition:
A measurement of the distance from the top of the belt to the top of the sheave groove to determine proper belt fit in the groove.
belt tension
Glossary “belt tension” Definition:
The tightness of a drive belt, generally measured in ft-lb (N.m).
belt tension gauge
Glossary “belt tension gauge” Definition:
Allows you to accurately adjust accessory drive belt tension. Drive belts which are improperly adjusted can cause conditions like overheating, noise complaints and charging system concerns. Overlt-tight belts place severe loads on accessory bearing, often causing premature component failure.
belly pan
Glossary “belly pan” Definition:
Body panel(s) covering the bottom of a vehicle to reduce the coefficient of drag, and or provide protection to under-vehicle components such as transfer cases, fuel tanks and differentials.
belt
Glossary “belt” Definition:
1. In a tire, the belt(s), generally steel, restrict ply movement and provide tread stability and resistance to deformation, providing longer tread wear and reducing heat buildup in the tire. 2). Device used to drive the water pump and/or other auxiliary devices, such as the alternator, power steering pump, off the engine crankshaft or pulley.
bell-mouthed drum
Glossary “bell-mouthed drum” Definition:
Well-worn brake drum that is deformed so that its open end has a larger diameter than its closed end.
bellcrank
Glossary “bellcrank” Definition:
Part that pivots to transfer motion at a right angle (90 degrees).
belleville spring
Glossary “belleville spring” Definition:
A diaphragm type spring used to help apply or release a mulitple-disc clutch.
belleville washer
Glossary “belleville washer” Definition:
A circular disk formed into a conical shape. When a load is applied, the disk tends to flatten, constituting a spring action.
bellows
Glossary “bellows” Definition:
A flexible chamber that can be expanded to draw a fluid or vapor in and compressed to pressurize the fluid or vapor.
bell housing
Glossary “bell housing” Definition:
1). Bell-shaped housing attached between the engine and the transmission used to house the torque converter or clutch assembly. 2). A term often used for clutch housing.
beehive spring
Glossary “beehive spring” Definition:
A spring that is wound in the shape of a beehive. A type of valve spring.
before bottom dead center (BBDC)
Glossary “before bottom dead center (BBDC)” Definition:
The position of a piston approaching the bottom of its intake or combustion stroke.