VP44: Seal & Disassemble - Repair Guide

Hello,


Can the VP44 be disassembled and resealed as 'easily' as the often-described VP37?
Do they offer any sealing kits compatible with biodiesel at Bosch, or are those only available for trucks now?
The logistics companies I know all use biodiesel, and they all have Bosch pumps in their vehicles, which is strange because it seems to work so well.

Thank you and best regards.

Toto.

dokatoto wrote:

The logistics companies I know all use biodiesel, and they all have Bosch pumps in their vehicles, which is strange because it seems to work so well.

And that's precisely the main reason why it works: they only use biodiesel.

Biodiesel only causes fuel pumps to leak when a mixture of biodiesel and regular diesel is used. It's not uncommon for a fuel pump to leak with regular diesel but seal properly with biodiesel. This is because biodiesel can cause brittle seals to swell again (after it has initially caused them to leak by washing out the plasticizers).