20405936 Valve | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta regulating valve used in the cylinder-block lubrication circuit on TAD530GE and TAD531GE engines. It operates with spring 20405896, sleeve 20405937, ring 20405904 and delivery valve 11700271.

🚤 Compatibility

• Engine Family: D, TD, TAD, MD

Full model list at the end of this description.

⚙️ Key Features

• Precision oil-pressure regulating valve
• Installed in the cylinder-block oil-control bore
• Works with calibrated spring 20405896
• Guided by sleeve 20405937 and retained by ring 20405904
• Valve and bore must remain clean and free of scoring
• Engine type: Volvo Penta 5-litre four-cylinder industrial diesel

🔌 Function

Opens against spring force to control excess oil pressure and maintain the engine lubrication circuit within specification.

⚠️ Common Signs of Failure

• Low or excessive engine-oil pressure
• Oil-pressure warning or fluctuation
• Valve sticking in the bore
• Scoring or erosion on the valve
• Bearing or turbocharger damage caused by incorrect oil pressure

🛠️ Service Notes

• Work clean — a valve is a precision component, and dirt or swarf carried in on the sealing faces is the commonest reason a new one fails early
• Fit new sealing rings, gaskets or washers wherever the original used them rather than reusing the old ones, and lubricate them lightly so they seat without rolling or nipping
• Check the seat, bore or housing the valve fits into for corrosion, scoring or distortion; a valve only seals as well as the face it beds on
• Tighten fixings and threaded connections to the figures and in the order given in the workshop manual for your engine — a valve body is easily distorted by overtightening
• After fitting, bleed or refill the system as required, then run the engine and check the valve for leaks and for correct operation before the boat is used

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 11700271 - delivery valve
• 20405904 - ring
• 20405896 - compression spring
• 20405937 - guide sleeve
• 20412745 - cap plug

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D7A-B TA, D7A-T, D7A-TA, D7C-B TA, D7C-TA
• Volvo Penta D5A-B TA, D5A-T, D5A-TA
• Volvo Penta MD2010, MD2010B
• Volvo Penta TAD520GE, TAD520VE
• Volvo Penta TAD530GE MECH, TAD530GE EDC4
• Volvo Penta TAD531GE MECH, TAD531GE EDC4
• Volvo Penta TAD720GE, TAD720VE
• Volvo Penta TAD721GE, TAD721VE
• Volvo Penta TAD722GE, TAD722VE
• Volvo Penta TAD730GE MECH, TAD730GE EDC4
• Volvo Penta TAD731GE MECH, TAD731GE EDC4
• Volvo Penta TAD750GE, TAD750VE
• Volvo Penta TD520GE, TD520VE
• Volvo Penta TD720GE, TD720VE PP
• Volvo Penta TAD532GE EDC4
• Volvo Penta TAD550GE
• Volvo Penta TAD551GE
• Volvo Penta TAD732GE EDC4
• Volvo Penta TAD733GE EDC4
• Volvo Penta TAD751GE
• Volvo Penta TAD760VE