WTB 928GTS PSD pump

[forrestc]

I need a replacement PSD pump for the differential. Any ideas where I can find one?

Thanks,
Forrest

[ammonman]

Call Roger @ 928sR Us. He can have your pump unit reconditioned. Hold on to you heart though as it is not cheap.

Mike

[bwmac]

Forgive the new guy. What's a PSD pump

[ROG100]

The PSD pump is about $1200 last time I looked.
We can offer a complete unit rebuilt and tested for about $1350 plus shipping.
Roger

[ROG100]

I am sure someone will correct me but it stands for Porsche Stability Dynamics and is basically an electronic LSD. Fitted to 1990 to 1995 928's.

If you have a 928 fitted with the PSD it is very important to have the system flushed every two years otherwise the system seizes up and is very expensive to repair.

The reservoir is a consumable with an internal filter. About $35 and worth changing every two to four years to be safe.

[bwmac]

Originally Posted by ROG100

I am sure someone will correct me but it stands for Porsche Stability Dynamics and is basically an electronic LSD. Fitted to 1990 to 1995 928's.

If you have a 928 fitted with the PSD it is very important to have the system flushed every two years otherwise the system seizes up and is very expensive to repair.

The reservoir is a consumable with an internal filter. About $35 and worth changing every two to four years to be safe.

So i don't need to inspect my diff then? thank God

ILL drop the fluid when i replace a CD boot. I assume hypoid diff oil will work

[ammonman]

Brad,

The PSD (Porsche Speer Differential) is an electronically controlled hydraulically actuated limited slip system that can vary the locking of the diff from 0-100% based on input from the controller. You still need to replace the lube in the differential as it is separate from the fluid for the PSD system. Check your owners manual for the correct diff. lube specs.

Mike

[forrestc]

Roger

What is included in the complete unit for $1350?

Forrest

[Maleficio]

I'm really starting to appreciate my early 928.

[bwmac]

Originally Posted by ammonman

Brad,

The PSD (Porsche Speer Differential) is an electronically controlled hydraulically actuated limited slip system that can vary the locking of the diff from 0-100% based on input from the controller. You still need to replace the lube in the differential as it is separate from the fluid for the PSD system. Check your owners manual for the correct diff. lube specs.

Mike

And I really need to get an Owners Manual

[ROG100]

Mike,
Thanks and I knew somebody would know exactly what it stands for.
The PSD (Porsche Speer Differential).
Roger

[ROG100]

We take an existing PSD and check/change/replace all faulty components and then test it for a period of time in a bench mounted test rig to simulate use. Fit new hoses and reservoir.

I usually have an exchange unit on hand to ship to a customer with a suitable core charge.
Once the faulty unit comes back we repeat the process.