3804921 Servo Unit Core | Genuine Volvo Penta Part

🔧 Product Description

Booked as a deposit and not as a part, this line carries the refundable charge made against the old servo unit at the moment an exchange servo unit is bought. It supplies no hardware of its own. Volvo Penta numbers a core deposit 3000 above the unit it belongs to, which puts this one against 3801921. We do not list 3801921 ourselves, so order it through the supplier of the exchange servo unit. It is the only servo unit deposit in this block, so the unit it is raised against decides the order. Until the old servo unit is returned the deposit stays on the account.

⚙️ Key Features

• Refundable core charge, not a part that ships
• Sits against unit 3801921, which we do not list
• Raised against the old servo unit on an exchange purchase
• Only servo unit deposit in this block
• Credited when the old servo unit is returned

🔌 Function

Carries the refundable core charge on a servo unit exchange. It ships nothing itself; the servo it stands against converts a control signal into the physical movement that positions the linkage it drives.

⚠️ 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
• Heavy, slow or unresponsive movement at the control it operates
• The unit failing to reach or hold the commanded position
• Fluid or grease escaping from the unit's seals
• Noise or judder from the servo, or a fault code raised against it

🛠️ Service Notes

• Ordering this line on its own supplies no servo unit. It is the deposit that rides alongside the exchange unit, so the servo unit itself has to be ordered as a separate line.
• The charge is refunded when the old servo unit comes back to us complete and rebuildable; a unit that has been stripped for parts, broken up or damaged in transit is normally refused for credit.
• Check the linkage, its end stops and the wiring to the unit before condemning it, as a stiff or seized linkage will stall a healthy servo.

📦 Condition

• Refundable core deposit - not a physical part