two. The RGS has long gone poor and has turned on the pump As well as AutoPark light-weight. Force will go thru the roof and shortly rupture the RGS or A few other element. Then, the brake will quickly utilize.
The above mentioned roughly describes a typical RGS failure. BUT, at times (it's possible in ten p.c from the failures) the procedure will show a really various list of failure signs and symptoms. We connect with this “the stalled pump syndrome.” In these conditions, the AutoPark lite within the dash goes ON and stays on, however the pump is usually heard being biking – – Probably operating for 30 seconds, then stopping for two or three minutes, then functioning for 30 seconds and so on.
On earlier models, look over the passenger facet from the transmission close to the body rail, but a little bit aft of your tranny by itself. You need to begin to see the reservoir simply, but will probably have to remove a sheet metallic plate to begin to see the AutoPark mechanism and also the RGS. It seems like this:
When this occurs, the parking brake will NOT release Despite the fact that the shift lever has actually been pulled into the REVERSE position. On top of that, the vast majority of reports express that the challenge is even worse with a incredibly hot engine and/or warm weather. The experiences even more propose that waiting for factors to chill off, and wiggling the shift lever all around will often enable the process to launch so the coach WILL transfer when placed in REVERSE.
Pull the female connector off The sunshine Change and check for voltage in between the terminals and floor – – Just one terminal need to be hot, and a person chilly – – You wish to faucet to the chilly a single.
5 Each individual press-in style connectors to aid tapping into the prevailing wiring over the motorhome.
This wire will direct you for the relay site – – Typically in just a handful of inches with the pump/motor.
Even though there are numerous versions during the wiring schema for units built throughout this period, all of the AutoPark lights are fed by two unique signals:
SUMMARY: For this parking brake method to function properly, you should begin with superior brake footwear that happen to be properly modified. This establishes the attractive one inch of travel which the lever must make while in the brake drum assembly.
Take away the relay from your socket/connector. Identify The 2 terminals inside the connector which can be fed by The 2 Huge wires.
Here is an on-line resource for the RGS – – aka the pump motor switch. This resource is claimed to generally be a helpful place for other GM components too. The GM part amount is 15961566. It truly is stamped on the situation. You could get it on the internet at: , I’m told that Amazon has the greater pricing
When these troubles to start with started off displaying up listed here on the AutoPark Library (perhaps 5 yrs ago), we'd have a tendency to generally blame them on poor adjustment of your situation change, and we hooked up much less relevance to your switch/cam assembly lubrication. With the passing of time however, We have now come to feel that nearly all of the issues tend to be more probably linked to the lubrication rather then the adjustment.
two. You might go to a Chevy/Workhorse/GM outlet but ensure that beforehand what they're going to demand you. The majority of these “Licensed” areas won't be ready to merely repair a leaking actuator. They may want to interchange your complete device.
Let’s study the photo A part of the “How It really works” produce up. This backing plate and brake shoe assembly is purposely developed this kind of the top rated conclude in the lever have to go about 1 inch to the remaining so as to properly set the brake. This 1 inch of travel is predicated on the shoe lining being in very good shape, and obtaining the star wheel adjuster established to the point wherever the footwear wouldn't rather You can try here touch the drum – – within the BRAKE Launched issue.