332.02.0001 MAN Compatible Fan Tension Roller

What does a fan tension roller do?

A fan tension roller is a drive component that keeps constant tension on the fan belt in a heavy commercial vehicle's cooling system and keeps the belt running on the pulleys without slipping. It sits at the front of the engine between the crankshaft pulley and the fan pulley; a spring mechanism or adjustable bearing compensates for belt elongation over time, dampens vibration, and preserves the wrap angle.

Vehicle and engine compatibility

This component is compatible with several MAN vehicle series, including LION'S COACH (L 440, C 480, C 320), LION'S REGIO, TGA, TGS I, TGX I, and HOCL models. It is specifically suitable for engines such as the D2676 and D2066 to ensure reliable cooling performance across various heavy-duty applications.

Installation and maintenance

For proper maintenance, technicians should inspect the roller for any signs of uneven wear or unusual noise during engine operation. Ensuring correct pulley profile and mounting alignment is essential to prevent belt slippage or premature bearing failure. If belt squealing or rising engine temperatures are detected, checking the tensioner assembly is a priority.

Troubleshooting and selection

Selecting the correct roller based on the engine code and pulley profile ensures optimal fitment and longevity in demanding service environments.

OE cross-reference

332.02.0001 (Fan Tension Roller Fan) is the equivalent of the Dayco and MAN OE numbers. This part directly replaces Dayco OE number APV2403. It also replaces MAN OE numbers 51958006076, 51958006079, 51958006092, 51958006099.