3806776 Injection Pump Core | Genuine Volvo Penta Part

🔧 Product Description

The refundable deposit line for an injection pump exchange, in the Fuel System group. The charge is raised when the exchange pump is bought and credited once the worn pump goes back. It is a bookkeeping line rather than a fittable part, and on its own it supplies nothing. Core numbers in this series run three thousand above the unit they belong to, so the pump this deposit stands against is part number 3803776. The line is listed at 29.5 kg. Nothing goes out against the deposit, so read that as the scale weight of the pump coming back for credit - a two-man lift, or one man and a hoist. Every line in this run carries the same injection pump core name with no fitment against it, so the part number is the only thing that ties a deposit to a particular pump - take it from the unit being exchanged.

⚙️ Key Features

• Core deposit line, not an injection pump you can fit
• Belongs with the exchange unit, part number 3803776
• Refunded when the old injection pump is returned
• 29.5 kg listed, the return weight to plan freight around
• No engine application published against the line, so order by part number
• Fuel System group

🔌 Function

It exists to carry the core charge on the exchange rather than to do anything mechanical; the injection pump itself pressurises the fuel and times its delivery to each injector, which is what governs the engine's power and its idle.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the injection pump being exchanged
• Stiff or binding drive as the engine is turned over, with the pump loading the timing gear
• A harsh knock or rattle from the engine that follows a change in injection timing
• Idle hunting or surging, with the revolutions never settling
• Fuel finding its way into the sump, with the oil level rising and smelling of diesel

🛠️ Service Notes

• The charge is refunded when the worn injection pump is returned, so keep the old pump and send it back rather than scrapping it
• Ordering this number on its own supplies no part - it goes on the order beside the exchange unit, part number 3803776
• The pump has to be timed to the engine's documented figure on refitting, and the system bled through before it will start cleanly

📦 Condition

• Refundable core deposit - not a physical part