21120693 Governor | Genuine Volvo Penta Part

🔧 Product Description

Genuine engine-speed governor calibrated for a documented 2300 rpm configuration on selected Volvo Penta industrial diesel engines. Governor selection requires the engine type, serial number, rated power and rated speed because externally similar units can have different calibrations.

🚤 Compatibility

Typically suits:

• Volvo Penta TD420VE
• Volvo Penta TAD620VE
• Volvo Penta TAD720VE
• Volvo Penta TAD721VE
• Volvo Penta TAD420VE
• Volvo Penta TAD520VE

• Engine Family: TD, TAD

⚙️ Key Features

• Documented 2300 rpm governor calibration
• Used on selected TAD and TD industrial engines
• Maintains stable engine speed as load changes
• Calibration-specific speed-control component
• Engine identity and rated output must be supplied when ordering
• Also supersedes Volvo part numbers 20460282 and 20740920

🔌 Function

The governor adjusts the engine fuel-control mechanism to maintain the specified speed as operating load changes.

⚠️ Common Signs of Failure

• Engine speed hunting or surging
• Failure to reach rated speed
• Overspeed or underspeed
• Poor response when load is applied
• Unstable generator frequency
• Governor linkage not moving correctly
• Speed-control fault or shutdown

🛠️ Service Notes

• Record the position and setting of every linkage, stop and adjuster before the old governor comes off, so the new one can be set up the same way
• Work clean and keep the fuel system covered while the governor is off — dirt entering here does expensive damage downstream
• Fit new gaskets, O-rings and seals on all joint faces, and use new locking devices on any linkage fasteners
• Set linkage travel, stops and speed settings only to the values in the workshop manual for your engine; a governor set outside those limits can let the engine overspeed
• Have the engine run up and the idle, maximum speed and shutdown behaviour checked by someone equipped to do it before the boat goes back into service

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21120693 → Supersedes 20735228

OEM / Related Numbers

• 21052340 earlier number superseded by this part
• 20590588 earlier number superseded by this part
• 20735228 earlier number superseded by this part
• 923976.0542 - Related governor reference
• 02111327 - Related governor reference
• 02111435 - Related governor reference

📦 Condition

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