The pump will continue to be off until finally the force has dropped to 1200 psi or lower, after which it will cycle as well as tension runs back again nearly 1600 psi. This Hello pressure is necessary to RELEASE the parking brake And so the coach can roll.
The earlier versions of AutoPark (from 94 as many as about mid 1001) possess the pump and almost all of the other goodies under the mentor, but the later on versions do not.
in set up with the RGS. The adapter, explained higher than as hunting rather like a pipe reducer, retains a very important spring and poppet valve. Should the adapter/reducer is taken out combined with the RGS, it can be very easy to shed the spring with no even realizing it.
AutoPark – – A parking brake system identified on some GM chassis which automatically applies a drum brake around the driveshaft. In the event the gear change lever is put into PARK, this brake is quickly applied.
Affliction E. – – Your AutoPark pump is managing consistently, or at the least seeking to operate consistently – It may be stalling. This is the common sign of to start with phase RGS failure. So long as the Pink lite hasn't absent ON, you continue to have method tension holding the parking brake in a very Produced ailment.
If for some explanation you are not snug with generating the above exams, Or maybe absence the appropriate tools, a good alternative may very well be to simply determine the relay, get rid of it, and go invest in An additional one.
This wire will guide you into the relay site – – Typically inside of a handful of inches in the pump/motor.
be pretty much fantastic. Any additional slack along with the brake will not keep firmly, and a lot of rigidity can have the shoes dragging. Although such a program can tolerate almost no wear or cable stretching without having want for adjustment, it has to be remembered that this is the static brake – – not a dynamic brake.
So – – Assuming the Try Here cables them selves are in fantastic issue, this leaves our remaining variable being the prolonged hex nut within the actuator shaft – – depicted as #one inside the illustration over. It is very important to note this actuator is proven within the BRAKE ON condition – – Consider To visualise IT WITH THE SPRING COMPRESSED inside the BRAKE OFF condition. With the brake OFF and the actuator shaft extended to its mechanical Restrict, we might want to adjust the lengthy hex nut just to the point wherever there was no slack within the cable system – – no extra, no fewer. If we then take away the hydraulic tension in the actuator, the spring will extend, and also the piston and shaft will transfer to the appropriate – – implementing the brake. Therefore the brake lever within the drum will transfer about an inch, the cable visiting the lever relay will go in regards to the identical inch, the cable heading With the relay into the actuator will shift about 1.
The AutoPark parking brake devices have included two various actuators over the years. From about 1989 to mid 1994, the actuator was a very good sized mechanism. Here’s a picture:
We also have (courtesy from the pump manufacturer), exploded views from the poppet assembly and corresponding section numbers, just in case a person must shed any of those parts. The plain way to stay away from these miseries is to get rid of Just the RGS and never the hex reducer which retains the poppet assembly.
THIS Is crucial: Using the actuator cylinder taken off, as well as the incoming line disconnected, your parking brake will be Utilized. It is going to maintain the coach from rolling – – so have it parked in which you want it BEFORE you do that do the job.
Spring across adjuster and two springs at the bottom are what retract the footwear when brake is unveiled. In addition they preserve some rigidity on the cable when the brake is released.
The above info pretty much coated what the RGS is, how it works, and exactly where to seek out it. Underneath, We have now inserted the writeup which describes the method utilized for determining failure with the RGS.