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MODIFICATIONS => Suspension/Wheels/Tires/Brakes => Topic started by: stargazer7467 on May 06, 2009, 08:11:57 PM

Title: Testing accumulator?
Post by: stargazer7467 on May 06, 2009, 08:11:57 PM
During an ebay search I came across a guy selling used accumulators and says he has a way of verifying them to be good. Anyone know how that is done?
Title: Re: Testing accumulator?
Post by: mfewtrail on May 07, 2009, 04:09:23 PM
He must have some sort of pressure testing rig to see if they're still holding close to their pre-charged pressure.
Title: Re: Testing accumulator?
Post by: jasonrush on May 07, 2009, 04:42:00 PM
From what I have been gathering these things only last a few years new so I wouldn't bother unless you're in a pinch. I just bought one from gmpartsdirect.com on tues and it should be here sat for $175 shipped.
Title: Re: Testing accumulator?
Post by: GPChief on May 07, 2009, 07:14:46 PM
I called 3 dealers in Colorado Springs, 4 in Denver, they all told me it was a discontinued part.  Am planning on switching to vacuum brakes this summer.
Title: Re: Testing accumulator?
Post by: Serge A. Storms on May 07, 2009, 10:28:32 PM
Quote from: GPChief on May 07, 2009, 07:14:46 PM
I called 3 dealers in Colorado Springs, 4 in Denver, they all told me it was a discontinued part.  Am planning on switching to vacuum brakes this summer.

Our plan too with the 5 speed swap.

A failing PMIII and Austin, Texas drivers make for an anxiety filled trip just going up the street. LOL
Title: Re: Testing accumulator?
Post by: White93z34 on May 08, 2009, 07:29:25 AM
Quote from: GPChief on May 07, 2009, 07:14:46 PM
I called 3 dealers in Colorado Springs, 4 in Denver, they all told me it was a discontinued part.  Am planning on switching to vacuum brakes this summer.

at this time It most certainly is not discontinued. most dealers cannot look it up due to the age/obscure nature of the car, there is a current part number posted around here somewhere, my local chevy dealer can still get it in for me.

Now that I have driven vacuum and PMIII cars I can say I would never swap PMIII for the vacuum stuff. PMIII has superior stopping power over the vacuum brakes. It just takes a learning curve and sometimes a bit more money to fix right, but it is worth it to me. I'd rather spend the money then go through all the work to swap in an inferior braking system.
Title: Re: Testing accumulator?
Post by: stargazer7467 on May 08, 2009, 10:13:18 AM
yeah my dealer wasa ble to pul it right up, had to get it from vintage parts however (VPI), $154 iirc.
Title: Re: Testing accumulator?
Post by: GPChief on May 09, 2009, 09:47:10 AM
So what is this mystery part number I need to be using?
Title: Re: Testing accumulator?
Post by: mfewtrail on May 10, 2009, 01:47:01 AM
Quote from: GPChief on May 09, 2009, 09:47:10 AM
So what is this mystery part number I need to be using?

Gm Part # 88927271.