20460503 Washer | Genuine Volvo Penta Part

🔧 Product Description

Washer used at the semi-rotary pump mounting screws to distribute clamp load.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD720VE
• Volvo Penta TAD721VE
• Volvo Penta TAD722VE
• Volvo Penta TAD520VE

• Engine Family: TAD
• HP Range: Approximately 237-280 HP
• Year Range: Approximately 1998 - 2006

⚙️ Key Features

• Genuine Volvo Penta semi-rotary pump mounting washer
• Designed for the pto-a semi-rotary hydraulic/power-steering pump
• Direct service replacement for Volvo Penta part number 20460503
• Washer used at the semi-rotary pump mounting screws to distribute clamp load
• Engine type: 7.2-litre six-cylinder turbocharged industrial diesel
• 2 used per assembly

🔌 Function

Sits under the semi-rotary pump mounting screw head and spreads the clamp load over the mounting flange, so the flange is pulled down evenly and the screw head cannot bite into or dish the surface.

⚠️ Common Signs of Failure

• Pump mounting screws found slack at service
• Fretting marks or a witness ring worn into the mounting flange
• Washer visibly dished, bent or no longer flat on the bench
• Corrosion under the washer lifting it off its seat and relaxing the joint
• Cracking or splitting from the bore after repeated tightening

🛠️ Service Notes

• Confirm thread, length, grade and any single-use restriction against the exact application
• Clean the threads and use the specified torque, angle and locking method

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20460501 - semi-rotary pump
• 20460502 - pump sealing O-ring
• 20460504 - mounting washer and hexagon screw
• 20460472 - application air-compressor assemblies
• 20460489 - application air-compressor assemblies
• 20460223 - compressor / pump oil-return line

Other-Brand OEM Numbers

• VOE20460503 - Volvo Construction Equipment prefixed number format

📦 Condition

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