This image should help most coach entrepreneurs recognize a variety of factors of their AutoPark parking brake process.
Curiously, each of the AutoParks constructed from 1989 up thru about 1994, had been pushed by strain from the ability steering pump rather than the independent electric powered pump that characterizes each of the afterwards models.
The other thing is to make sure that you use ATF – – that is what exactly is used in the AutoPark system, NOT hydraulic fluid.
There is little that can be performed inside the tank sender unit in addition to ensuring the float arm is swinging freely and you'll Check out the continuity amongst the terminal within the sender unit and your body on the unit, lack of continuity will possibly signify which the swinging arm has misplaced connection with the coil within or the coil provides a broken wire.
If the RGS fails from the locked ON problem, the AutoPark lite within the sprint will keep ON as the pump proceeds to operate (or tries
This wire will guide you to the relay location – – Usually inside a few inches on the pump/motor.
If the thing is this reservoir, You then absolutely possess the afterwards Variation which runs off of its possess electric pump.
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Move change selector outside of PARK. If AutoPark lite goes on and STAYS on, chances are you'll incredibly probably Possess a bad RGS. A good RGS would normally operate the pump As well as the AutoPark lite to get a about three to five seconds and afterwards cease – – The lite would head out if the pump stops.
AutoPark – – A parking brake method uncovered on some GM chassis which mechanically applies a drum brake around the driveshaft. If the equipment change lever is put into PARK, this brake is mechanically used.
Refill the AutoPark reservoir with contemporary ATF and do it yet again. 1 flush need to clean most techniques, but when you see loads of residue within the reservoir, Read This you should repeat the process till anything appears to be cleanse.
In the next PDF produce-up, We'll do our greatest to clarify the whole AutoPark brake set up and its operation is just not a little something you can certainly recognize at a glance. They built this floating concept to keep the footwear type of self centering within the drum.
So exactly what is the Rotten Green Change, and what does it do? The RGS is An electrical stress change, which controls the hydraulic pressure provided for the actuator. It really is meant to turn on the pump at pressures underneath 1200 psi, and switch the pump off if the pressure reaches 1600 psi.
For people interested, the purpose from the poppet valve is to help keep the procedure stress from flowing backwards in the pump after the pump stops jogging. Lack of the poppet or spring enables the strain to fast escape back throughout the pump and ends in the oscillation outcome.