TOPIC:

looks like there has been a problem for a longer time.
So boys always check your water pumps

The case of the pump is made from some kind of aluminium.
So warming it up may loosen the bearing ring.
Soak it up for a few days in WD40 or stuff like that.
warm it up, let it cool down, warm it up, let it cool down, warm.......
Keep calm, don't destroy it

good luck, Joachim

Joachim wrote:

looks like there has been a problem for a longer time.
So boys always check your water pumps

The case of the pump is made from some kind of aluminium.
So warming it up may loosen the bearing ring.
Soak it up for a few days in WD40 or stuff like that.
warm it up, let it cool down, warm it up, let it cool down, warm.......
Keep calm, don't destroy it

good luck, Joachim

Heat and differential contraction by rapidly cooling the bearing race with Shock & Unlock" freezing/penetrating spray may help. Plusgas is the best release agent for 'soaking' in my experience.

The heat/chill cycle method and a very well fitting drift (a suitable size socket) have worked for me getting needle roller races out of alloy suspension linkages - but they are probably not as fragile a pump housing.

Hi Mike

You have probably noticed that there are a couple of holes on the side of the housing, which lead into two slots, visible from the seal side of the housing.
I tapped the inner most bearing out using a small drift/piece of 3mm thick bar ground down, carefully tapping each side. Be careful though, the "web" which separates each half of the pump is quite thin.
Going to pursue making a new shaft and costing to make more via cnc

Hello Folks,
Here's the reply to my inquiry from South Coast Seals

I think what you have is a 12mm Burgmann AR seal with a 26 mm stationery 5.5mm thick

Our code will be SBS/012LSS/CAN11 £15.98+vat
Carriage £9.95+vat

Available ex stock

Regards

Ben

Now of course, I have no idea whether or not Ben is correct because I haven't dismantled my pump yet!. Going by the price, it doesn't sound like the correct one?.
Alan.

you can find the measurements of the Burgmann sealing

www.eagleburgmann.de/en/products/mechani...t-ar?set_language=en

On the right side you can download a data sheet in english
I would add mine, but it's in german

My sealing is Type BT-AR 12C
with the small rubber ring PF C (l4=5,5mm)

ciao Joachim

As long as the critical dimensions are the same.....ie 12mm internal for the main seal, and 26mm for the stationary part, I think there is room for a little variation in length, because the spring has quite a lot of travel.
As Joachim has noted, the sealing surface diameter on his new seals is a little thinner than the original, much like the one I bought.
Maybe South Coast Seals have a more friendly pricimg system Alan! I might order a couple through them to compare.