21087705 V-Belt | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta V-belt for the TAD732GE/TAD733GE radiator fan-drive system using pulley 21087704. The belt has the correct section, effective length and construction for the original fan bracket, circulation pump and tensioner layout. Belt selection must be made by part number because changes to the fan bracket and tensioner occur across engine serial ranges.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD732GE EDC4
• Volvo Penta TAD733GE EDC4

• Engine Family: TAD

⚙️ Key Features

• Correct V-section and effective length for the D7 generator fan drive
• Matched to pulley 21087704 and the original fan-bracket geometry
• Heat- and fatigue-resistant construction for continuous generator operation
• Maintains positive fan and coolant-pump drive under changing load
• tensioner and bracket configuration must be checked before fitting
• Engine type: D7-series generator diesel radiator fan drive

🔌 Function

Transmits crankshaft or accessory-drive power to the radiator fan and associated cooling components, maintaining the airflow required for stable engine temperature under generator load.

⚠️ Common Signs of Failure

• Cracks, glazing or sidewall wear
• Belt squeal during starting or load changes
• Excessive belt dust around the fan bracket
• Fan speed reduction or engine overheating
• Repeated belt throw caused by pulley or tensioner misalignment

🛠️ Service Notes

• Slack the tensioner or adjuster right off and roll the belt onto the pulleys by hand; levering a belt over a pulley flange with a screwdriver breaks the cords in the belt side walls
• Check the pulley grooves are clean and unworn before fitting — a groove with a polished, glazed bottom or a worn shoulder will not grip a new belt and will chew it up
• Check pulley alignment and the condition of the tensioner, idler and their bearings while the belt is off
• Tension the belt by the method and to the deflection given in the workshop manual for your engine, then run the engine, stop it and re-check; a new belt beds in and loses tension quickly
• Where two or more belts drive together, renew them as a matched set so the load stays shared

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21087704 - matching drive pulley
• 20450758 - serial-controlled belt tensioners
• 21142055 - serial-controlled belt tensioners
• 20450764 - additional tensioner in the drive arrangement
• 20450755 - fan hub
• 21034351 - pusher-type cooling fan

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging