Drive Belt: Description and Operation

Accessory Drive








GENERAL
A single six-ribbed belt drives all the primary engine mounted accessories and a secondary double-sided single eight ribbed belt drives the engine driven cooling fan.

Both the primary and secondary belts are crankshaft driven via the torsional vibration damper. An automatic tensioner, located on the LH accessory-mounting bracket, keeps the belt at the correct tension. A deflection pulley on the RH accessory-mounting bracket increases the wrap angle around the generator pulley.

The torsional vibration damper incorporates compressed rubber between its inner and outer diameters to absorb vibration and shock loads.

The automatic tensioner consists of a deflection pulley on the end of a spring loaded pivot arm. The pivot arm can be turned counter-clockwise (viewed from the front of the engine) for removal and installation of the belt.

Accessory Drive

Overview
There are 2 accessory drive belts on the supercharged engine and this section covers basic checks for both.

For ease of identification, the 2 belts are referred to as primary and secondary drive belts.