Thread: P38 Brake Accumulator Recharge?

Originally Posted by Hoges

Very interesting post in RR.net re. a bloke who has been recharging accumulators for the Audi (USA/Canada-based) enthusiasts for the past 10 yrs... recently did one for a RR... pics included.

Recharged ABS Brake Accumulator

wondering if there's anyone with requisite tools, pneumatic fittings and access to high pressure nitrogen supply (1000+psi) who might be able to provide a similar service locally... SWMBO has already banned me from experimenting with this on the front verandah

Interesting prospect, I reckon these would go off with a bigger bang than a clandestine meth lab

Originally Posted by Hoges

Very interesting post in RR.net re. a bloke who has been recharging accumulators for the Audi (USA/Canada-based) enthusiasts for the past 10 yrs... recently did one for a RR... pics included.

Recharged ABS Brake Accumulator

wondering if there's anyone with requisite tools, pneumatic fittings and access to high pressure nitrogen supply (1000+psi) who might be able to provide a similar service locally... SWMBO has already banned me from experimenting with this on the front verandah

fair enough too, that's what your shed is for.............

you'd have to be sure that little plastic washer on the piston ? was replaced or in good order i suspect

...........tasi

Hmmmm.....

See http://www.aulro.com/afvb/showthread...32#post1907532

Very interesting.

It'd be great if they could be re-gassed in Oz. I think mine is getting on there, three pumps of the brake and the motor comes on.

If someone in the ballarat area has an accumulator in there spare parts they can get to me I'll try to see if I can modify my gear to recharge one. I'll be taking the nitrogen bottle back soon though. So you may need to wait until next time I need to regass some spheres. ( BOC charges you a ****load of rental if you keep the nitrogen bottle each month .... my wife tends to get "slightly annoyed" when she see's two lots of bottle rental coming in for something we don't really need ).

seeya,
Shane L.

Was talking to a guy from an air and hydraulics place. He said recharging accumulator balls is quite easy and they'd do at least a few per month.

He rekons about $100 and was suprised it was only 80bar.

I dont think he knows that these ones dont have a valve, going in to see tomorrow.

I dont think they'd want to put one in.

It does seem to be a waste throwing out this unit and getting a new one every few years.
Do they slow leak or does the bladder rupture?
I believe the gas enters the brake system when it leaks out, resulting in a spongy pedal.
Its a pretty expensive thing to change.

As its a diaphram type accumulator the nitrogen simply weeps through it over time. Same as a helium baloon.

Think im going to have to bite the bullet and order one, the pump cycles every two brake applications now.