ABS pump rebuild

Force13b · 10-27-2011, 12:17 PM

I have an extra ABS unit that has a slight leak and i know mazda says they can't be rebuilt. I also know that a new unit from Ray Crow is 1700$ has anyone ever taken 1 apart and rebuilt it? It can't be more then a bunch of O rings.

Just trying to get some information before i dig into this thing.

Pete_89T2 · 10-27-2011, 06:32 PM

FWIW, rebuilt 2nd gen ABS pumps can be found, but they ain't cheap, at like $600 a pop. My guess is rebuilt 3rd gen pumps can be found too. I ended up doing the ABS bypass job on my FC, but for fun I decided to take apart my old ABS pump to see how it works. The 2nd gen pump has 2 horizontally opposed pump pistons that were the only parts that needed to be sealed. Each piston had two of these rubber seals on them. These seals are similar to O-rings, but have a different cross section - looks sort of like a cloverleaf, and they are called quad rings. I had no luck finding these oddball seals anywhere at the time, and since the piston bores were showing signs of surface corrosion, I figured it wasn't worth rebuilding anyway.

Force13b · 10-28-2011, 11:10 AM

Quote:

Originally Posted by Pete_89T2

FWIW, rebuilt 2nd gen ABS pumps can be found, but they ain't cheap, at like $600 a pop. My guess is rebuilt 3rd gen pumps can be found too. I ended up doing the ABS bypass job on my FC, but for fun I decided to take apart my old ABS pump to see how it works. The 2nd gen pump has 2 horizontally opposed pump pistons that were the only parts that needed to be sealed. Each piston had two of these rubber seals on them. These seals are similar to O-rings, but have a different cross section - looks sort of like a cloverleaf, and they are called quad rings. I had no luck finding these oddball seals anywhere at the time, and since the piston bores were showing signs of surface corrosion, I figured it wasn't worth rebuilding anyway.

I found a used pump on ebay for 60$ and figured it was worth a try see if it leaks. My old one is now sitting in a box and figured if i could rebuild it i put in in my buddy FD his pump leaks really bad.

quick google search of abs quad rings brings up http://www.allsealsinc.com/abs_gaskets.html they say they can custom make any gasket. Time to take the abs unit apart and ship off some parts.

Garfinkles Motor Works · 11-26-2011, 05:29 AM

I have had most of mine apart when I polished it ,I found the new o-rings at some little supply shop in Nashville.This was several years ago and I do not remember the name or location of the place ,that is a lot of help.I do have some of the o-rings in storage .

cewrx7r1 · 12-09-2011, 03:50 PM

A friend is parting out his 95. What year is yours?

Force13b · 12-12-2011, 11:59 AM

I currently have 2, 93 abs pumps. Both of which leak 1 way worse then the other.

RX SE7EN · 12-12-2011, 01:26 PM

I have a good condition 94 that I just removed if you are looking for one.

Force13b · 12-12-2011, 01:38 PM

Thanks but i've already bought 2 working units on ebay. I'm not sure how lone they will stay working, in the mean time i'm hopping to rebuild the 2 leaky ones i have.

Fendamonky · 12-13-2011, 10:45 AM

I feel a write-up in the making....

10-27-2011, 12:17 PM	#1
Force13b cxxxx\|::::::::::::> Join Date: Nov 2009 Posts: 315 Rep Power: 16	ABS pump rebuild I have an extra ABS unit that has a slight leak and i know mazda says they can't be rebuilt. I also know that a new unit from Ray Crow is 1700$ has anyone ever taken 1 apart and rebuilt it? It can't be more then a bunch of O rings. Just trying to get some information before i dig into this thing.

10-27-2011, 06:32 PM	#2
Pete_89T2 Lifetime Rotorhead Join Date: Apr 2010 Location: Elkton, MD Posts: 874 Rep Power: 15	FWIW, rebuilt 2nd gen ABS pumps can be found, but they ain't cheap, at like $600 a pop. My guess is rebuilt 3rd gen pumps can be found too. I ended up doing the ABS bypass job on my FC, but for fun I decided to take apart my old ABS pump to see how it works. The 2nd gen pump has 2 horizontally opposed pump pistons that were the only parts that needed to be sealed. Each piston had two of these rubber seals on them. These seals are similar to O-rings, but have a different cross section - looks sort of like a cloverleaf, and they are called quad rings. I had no luck finding these oddball seals anywhere at the time, and since the piston bores were showing signs of surface corrosion, I figured it wasn't worth rebuilding anyway.

11-26-2011, 05:29 AM	#4
Garfinkles Motor Works RCC Contributor Join Date: Mar 2008 Posts: 535 Rep Power: 18	I have had most of mine apart when I polished it ,I found the new o-rings at some little supply shop in Nashville.This was several years ago and I do not remember the name or location of the place ,that is a lot of help.I do have some of the o-rings in storage .

12-09-2011, 03:50 PM	#5
cewrx7r1 The Judge Join Date: Feb 2008 Posts: 196 Rep Power: 18	A friend is parting out his 95. What year is yours?

12-12-2011, 11:59 AM	#6
Force13b cxxxx\|::::::::::::> Join Date: Nov 2009 Posts: 315 Rep Power: 16	I currently have 2, 93 abs pumps. Both of which leak 1 way worse then the other.

12-12-2011, 01:26 PM	#7
RX SE7EN Rotary Fanatic Join Date: Feb 2010 Posts: 183 Rep Power: 16	I have a good condition 94 that I just removed if you are looking for one.

12-12-2011, 01:38 PM	#8
Force13b cxxxx\|::::::::::::> Join Date: Nov 2009 Posts: 315 Rep Power: 16	Thanks but i've already bought 2 working units on ebay. I'm not sure how lone they will stay working, in the mean time i'm hopping to rebuild the 2 leaky ones i have.