Belt Styles
Serpentine Belt Configuration
Engine belt replacement is considered to be part of scheduled maintenance included in a facilities Planned Maintenance Program. This includes inspection and replacement components that can fail under loaded conditions for extended amounts of time. Always replace belts when required by the manufacturer. The two common types of generator engine belts used are:
V Belt
This style belt is commonly with smaller or older applications. The V-belt has been created in the shape of a triangle to reduce belt slippage. Generally, one V-belt drives one component (such as a water pump or alternator).
Serpentine Belt
Also known as Multi-V, Poly-V, or Multi-Rib belt. One belt is used to drive multiple engine components. Newer engine applications use the serpentine belt system. These systems often use automatic belt tensioners to maintain correct belt tension.
Inspection
Belt Inspection
Belt inspection is performed in addition to belt replacement at scheduled intervals. Inspections should be performed in accordance with engine and belt manufacturer guidelines.
V-Belt
Discard belt if any horizontal or vertical cracks are visible.
Serpentine Belt
Horizontal cracks on belt ribs are acceptable as long as the crack does not extend into the belt backbone. If a crack extends into the backbone, it must be replaced. Replace the belt if any vertical cracks are visible between ribs.