ABS assembly repair

So you're saying your pump motor was out The thing next to the accumulator yeah I have several of those apart here but none of them had motor problems they all ran fine ran all the time actually because of? Internal leak through a valve accumulator leakage? Who knows I can't open up the block to get inside of it to see the valves or what all goes on in there I have several here laying about in different stages of disassembly here the customers just opt for a new unit around $1,480 if ordered online and picked up. There was a fell on eBay that claimed he could rebuild these and had a pretty nice shop pictured online I bought two units from him and he vanished but two units works very well I was looking to buy more of course no such luck takeoffs from the Asian market used to be available through the JDM importers seems they've stopped doing that too kind of leaves one holding the bag.

 

Good luck with that.

Worn pump motor can certainly cause those codes. However the motor usually gets worn because a leak in the actuator causes the pump to run too often for too long.

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Well many actuators in the generation 2 throughout the world and been replaced usually because the motor is running excessively because it is believed there is a pressure system problem so the pump runs to maintain the pressure it needs to see it it sensors or computers It doesn't maintain that so the pump keeps running to try and manufacture that pressure that keeps escaping so there's always that I guess in some rare form what you have here could happen but certainly is not anywhere near the norm it doesn't seem like so if you're motor just burn up because of no brushes and everything else is okay then you should be good to go till you develop the leak that makes the motor run all the time brushes or not of course the motor won't run with no brushes obviously.

 

Brush-commutated motors can wear out. Even if it isn't the most common failure mode, that doesn't mean it can't be what happened to somebody.

If the motor just doesn't draw power or turn, but will if banged on, that does sound like a brush issue.

 

Happens fairly often on blowers, starters, door lock actuators, etc.

Not surprised that it's happened here. I am just doubtful that it is the only problem. If I am wrong, then so be it.

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I have personally rebuilt 1000+ convertible top electric motor/pump assemblies. Some have very, very similar motors/brush assemblies as what you show in your hand. If you have a salvage yard with any convertibles, it may be a source for you. It's pretty rare that you can find an off the shelf brush that is an exact match. I've been able to remove the accumulator from the actuator, but never tried pulling the motor off. I've never seen a motor fail, but have experienced hundreds failing on convertible motors, so everything you've posted makes total sense for your symptoms. These motors should be pretty darn cheap to acquire, since most failed actuators still have good motors. I even keep all the bad actuators I've removed, just to have spare parts if needed.

 

If the magnets were broken loose, you need to clean all the old adhesive off the back of the magnet and the metal case. Use a very thin layer of epoxy on the magnet. Make sure you have spacers to correctly position the magnets. I also use a 'tailpipe expander' tool to maintain pressure on the magnets while the epoxy is curing. There is typically a pretty tight gap between the rotor and the magnets, so any abnormal layer of adhesive may cause the rotor to rub on the magnets.

 

Looks pretty good. Hope you kept the magnets in the same positions as they were before. If they were flipped then the north and south magnetic poles would be reversed (and that causes problems as I have found out).

Hope it works out!

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My point is why hasn't the aftermarket picked up these things they do it for almost every other one on the market even the expensive BMWs and Lamborghinis and what have you they rebuild those Bosch and other branded actuators and all that stuff I do business with remanufacturers of some of that stuff they just don't do these they do them for like 16 Corollas and up the ones that mount on the fender well that are only like 180 bucks rebuilt ready to go Don't have to take any of the car apart to change it hardly.? It's just kind of strange how that is I was just over at the place the other day and saw a BMW or some European car unit ABS actuator out of the car it looked almost identical to the generation too same kind of accumulator same round pump different large plug almost orientated the same way and everything not uncanny but close to it and I'm thinking to myself this is just like pure retarded I mean I guess the $1,400 price isn't enough to make a lot of people balk I guess.