Wabco Install

[Chris Richard]

At159 delivered the Wabco price is real close to what the Hydac sells for when the people selling have them in stock. You could have shopped some more and beat the EBay price, but I don't think you could beat the two day delivery at that price.

There is a height difference (as well as, volume... .25L vs .32L) and that wrench hex would account for that. My original had a recessed Allen wrench fitting to secure the ball. I'm sure it was OEM, in my case. While talking to the WABCO rep, it didn't occur to me to ask that. I don't enter my car in shows, so shimming the cross brace wasn't an issue for me. It was a simple mod to make things work. The design in your picture wasn't my first choice, for aesthetic reasons. I didn't like the look of the cap extending up like that.

One oversight on my part, now that I think about it, is that I didn't specify to them I installed it on a Reatta Teves system. My focus was to get some feedback on warranty in North America vs England, and to confirm my accumulator was new by supplying the SN. So, it is possible any warranty claim may hit a snag since it's not a Range Rover. Either way, I'm willing to take a chance on not needing the warranty. My OEM accumulator lasted 27 years, so the odds are in my favor it will last more than 2 yrs. Time will tell, though.

There is a fiat/alfa romeo part for the selespeed gearbox 71751195 which has the same thread but is stamped 92 bar but that maybe the precharge value as the part number also mentions 210 which maybe the max working pressure but i have been unable to verify that. Someone mentioned that they had 2 hydac ones where the diaphragm burst when the pump ran, so maybe they have different strength nbr diaphragms to cope with the different pressures as I imagine the steel ball itself is virtually indestructible?

In the late 80s every GM car with ABS used the Teves - except the Allante which used a Bosch - what happens when you have an Italian company build the car and Japanese high school kids design the wiring.

That brace is remarkably tough. When I installed my Hydac I tried doing a little dimple on the bottom with my 20 ton press and was only partially successful. I am sure it could be modified with the addition of heat, or cut and weld a notch in it, but the washers worked and I just ;eave the hood closed?

Well, I believe it is time for me to replace the accumulator in my 89 with 140k miles. Thanks to everyone who has contributed on this topic. I am about ready to purchase the Wabco STC 2784. However, I am wondering if anyone has any experience with the Uro or Dudsn brands, which have the same STC 2784 part number. The Uro is about 1/2 the price of the Wabco. Thanks in advance for your response.

To answer Barney: After reading this thread, I discovered the existence of the URO STC2784. I asked if anyone had tried this, as I would not want to repeat a failed attempt with this, nor pay more for the Wabco item if the less expensive URO item could be used.

I have collected some info on the URO brake accumulator and can provide some comparisons to the GM original and the Wabco versions. I purchased the URO item for just over $100 (Rockauto) and the Wabco for around $250 (Amazon/Autoplicity).

I ultimately installed the Wabco. When installed it touched the pipe that circles the front of the accumulator. I believe the URO, while it may have fit, would have put some pressure on the pipe. I employed the two washer solution when refitting the cross brace and it just cleared the top of the accumulator. I would suspect the extra 10mm of height on the URO would not allow the cross brace to be re-installed. I do not believe the stud on the strut housing is long enough to allow the cross brace to be mounted much higher.

I used a metal strap oil filter wrench to remove and install the accumulators. Due to the torque required (more than anticipated) for both the removal and installation, I blocked the pump/motor assembly. The service manual calls for 30 ft-lb.

Thanks for the update and information? It is interesting the dimensions are so different between the two aftermarket accumulators when the apparent part number is the same??? Is a country of origin listed on the URO?

I have torn down a few of the Teves pumps and explored the insides and the one thing I never had any luck doing, was removing that plastic elbow. I have heard it is possible, but I have failed to do so. I know the urge to drain and clean the reservoir as much as possible is strong, but the reality is, that same fluid in the bottom of the reservoir has been the active part of the system for all the years prior to the fluid change. I know, I have the same desire and Barney's point about the screen is a very good one but a couple of fluid changes in a shortened regular schedule will take care of the system as well as possible.

I don't know how accessible the MC fill port is, but I always try to suck out as much of the old fluid from the reservoir as possible before flushing the system with new fluid. I use one of these bulb-type syringes. You can add a length of hose to the end if an extension is needed. Just be sure to use a fender cover and put your finger over the end to prevent drips as you remove it.

The WABCO OptiFlow Tail provides identical fuel savings as OptiFlow AutoTail, according to WABCO, and features a lightweight design that is straightforward to install and retrofit.Both OptiFlow Tail and AutoTail are made from automotive grade thermoplastic, an extremely lightweight, durable and long-lasting material that WABCO says resists wear from weather, vibration and everyday hazards of the trucking industry.

TBC said the refreshed Navitrac portfolio is produced in a new production facility and includes six power lines with sizes ranging from 17.5-in. regional all-position to a 385/65R22.5 wide-based mixed service. In addition, every Navitrac tire is backed by a five-year, two-retread warranty package.

- Additional WABCO OnGuardACTIVE Collision Mitigation System (CMS) retrofit kits. Five new retrofit kits have been added to the OnGuardACTIVE retrofit portfolio, enabling fleets to install the advanced active safety technology on most Freightliner P3 Cascadia 2013-2020 model year vehicles. The radar-based system can assist drivers with recognizing and responding to potentially dangerous driving scenarios with moving or stationary vehicles ahead.

3a8082e126