Vacuumpomp

Leybold Trivac D8B

We need a roughing pump for our turbos. I bought this unit a while ago, and it works, but it also makes funny noises.

It needs to be opened up. I may have to fabricate and/or purchase some new parts to get it back to a more usable state.

Fully disassembled pump module
First and second stage vanes
First stage vane in pump module segment
Original busted gasket and temporary laser cut silicone replacement
Freshly polished gasket surfaces of pump main mount and housing
Shaft seal driver. This tool makes it harder to screw up when installing new shaft seals.
Old gas ballast seal next to its replacement

Lessons learned so far:

For those who wish to replace the shaft seals without being extorted by Leybold, they are regular FKM GR 15x24x6.5 SS 304 spring oil seals. Available as a general commodity item.
Do not try to replace the gas ballast seal unless absolutely necessary. It is very hard to remove from the deep, blind hole. It also incorporates an internal metal ring, making cutting the seal out impossible. See gallery photo above. It took me three hours to remove it without damaging the seat, with a combination of solvents, a scalpel and a hemostat. Don't be me, leave it be.
Use a special driver to install the new shaft seal. I designed one, you can find the STL here.
If the vanes seem a bit loose when dry, like they have too much play in the rotor slots and wobble around a bit, don't worry. Once there is an oil film in-between the vanes and the rotor surface, they'll be just fine.