2013 reitnouer big bubba dump vavle help

Call Reitnouer an discuss with them at 610-929-4856. I am on my 2nd Big Bubba with something of a similar set-up, but not that limited. R has always been very good to me in my past dealings!

I think why they would restrict dumping when empty is the risk of pulling the shocks apart when you hit the switch; my trailer has what they refer to as a shuttle valve that supposedly sends full line pressure (?) to the front bags which will always be somewhat tough on the bags but I would guess will give you more stability when turning. But when empty I will lift the rear axle off the ground when dumped; so, if there are no shock straps installed the only thing to contain the highly-pressurized bags are the shocks, and they probably aren't meant to function under that strain. Haven't pulled the shocks apart yet, partly because I only do this when I have to make a really tight turn and then only leave in the dumped position for several seconds. My trailer also has a fwd axle that lifts, so I deadhead on the rear only.

The 5mph thing I'm not sure about. I'm sure there have been idiots who have done stupid things and caused damage and/or lawsuits, so something related to moronic behavior may have caused this.

Good luck!

 

The 5mph thing is something you can thank the goverment for.

 

what ABS control unit of what maker is fitted under trailer.

Newer ABS and TEBS units got programmable load and speed outputs, that may be used for any reason

For example shmitz trailers with EBS switch manual level valve in auto position at 5-10 MPH) with dump trucks these outputs actuate inhibitor solenoid valve

 

Didn't think about it on my earlier post, but sure there have been many forgetful drivers hit the switch for to dump the axle and left it in that position; so, I suppose it would be a back-up feature to have a speed sensor tell the valve to re-inflate. Noticed in my driving today, though, just how slow of a turn that 5mph is! 10mph not be fast enough for me either, so maybe 15.

Maybe a timer instead of a speed sensor, so that when 10 seconds or so have passed that the valve returns to normal operation?

 

HALDEX, 338051121

There is small solenoid. Hits valve in auto position

 

Pablo - what does that valve do? Interesting to hear about what goes on/equipment differences across the pond - thanks!

 

Alaga the valve Pablo shows is very common here but it is not the newest technology.
Latest is EBS with ECAS.(we are talking trailers here,that technology is allready the norm on trucks for years)
With that system the choices are numerous.
For instance,you can program it so that when you take a turn below 20MPH,the rear axle on the trailer will dump till the front axle hits the maximum allowed payload.
Thus saving the tyres.
This is without driverinput.
You can program a second way,this one is driveractivated,but only for "offroad" use.

Another feature is seeing your axleweights

 

As I can see from the last post his trailer got no EBS with ECAS., just simple leveling valve and manual inflate/dump valve. Really Trailer maker use programmable outputs of unit (Bendix is trademark of KnorrBremse unit in USA).

To reprogram speed output is easy if you have Knorr/Bendix ECU Talk software with full access.