3804401 Servo Unit Core | Genuine Volvo Penta Part

🔧 Product Description

Core deposit for a Volvo Penta servo unit, from the Ignition and Control Systems group. It is an accounting line rather than a fittable part: the refundable charge raised against the old servo unit when a replacement is supplied on exchange, credited back once that worn unit is returned. Ordering it supplies nothing in itself. It is raised against unit 3801401. Core numbers in this series run three thousand above the unit they belong to, so the deposit and the unit are read as a pair.

⚙️ Key Features

• Refundable core deposit on a servo unit, not a fittable part
• Credited back on return of the old servo unit
• Pairs with unit 3801401, three thousand below this core number

🔌 Function

Holds the refundable deposit raised against the old servo unit when a replacement is bought on exchange, and releases it as a credit when that unit is returned. It does no mechanical work. The servo unit itself provides the powered assistance behind the control it serves, doing the work the operator would otherwise have to put in by hand.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the servo unit being exchanged
• Assistance weak, dropping out under load, or gone altogether
• The control heavy, sticky or uneven through its travel
• Fluid weeping from the unit's seals or joints
• Groaning, whining or knocking as the unit works

🛠️ Service Notes

• The deposit is refunded when the old servo unit is sent back, so return it complete and as it came off - the credit depends on the core being fit to rebuild, and a stripped or broken-up unit can lose it
• Ordering this line on its own supplies no part. It has to go on the order alongside unit 3801401, which is the item that actually ships
• 3804401 and 3804461 are both servo unit cores with nothing on either line to separate them - order by part number

📦 Condition

• Refundable core deposit - not a physical part