Usually, if the gear change lever is moved from PARK to Various other place (reverse, travel, neutral), the RGS will swap the pump on till the procedure force reaches 1600 psi and then the RGS will Visit the open Make contact with condition, and shut the pump off.
It is important to recognize that the parking brake drum method on an AutoPark parking brake Geared up chassis is created like a STATIC Technique.
four. Take a look at the procedure to make certain that the sneakers are NOT dragging within the “brake unveiled†issue, and which the AutoPark (PARK placement over the gear shift lever) will adequately keep the mentor on an incline.
I’ve usually created the idea that GM designed the AutoPark system to create you believe you ended up within the family vehicle. Most motorhome motorists are certainly not truck drivers – – Most have never driven heavy cars until finally they obtained a motorhome.
As it seems, the lubrication system may be accomplished with no lot of preparation get the job done. Even though a tiny bit awkward, the swap may be attained by laying in front of the still left entrance wheel, and reaching up on the change.
This second diagram demonstrates the Edition III program. It doesn't have the manual foot pedal, but rather provides a yellow drive-pull knob to the dashboard plus the PARK situation around the gear selector.
On all variations of AutoPark, there is a drum brake over the driveline – – ideal behind the tranny. Altering it can be very like accomplishing the brakes on an more mature passenger car.
That is a minor button valve. It is actually captured in placement but can “float†within the up and down route. It really definitely can avoid circulation backwards up into the valve bodies, but precisely what that accomplishes, I've still to figure out. It opens straight to the exit line visiting the reservoir, which isn't under pressure other than atmospheric.
The following webpage illustrates The essential Procedure with the actuator, which is actually the “coronary heart†More Bonuses in the AutoPark system.
The pump will remain off until eventually the tension has dropped to 1200 psi or reduce, and afterwards it can cycle and also the tension runs back up to 1600 psi. This Hello strain is needed to Launch the parking brake so the mentor can roll.
have a foot pedal for your park brake, just checking the AutoPark will be The one thing needed. When the AutoPark is working properly, though the foot pedal is not, you might require to adjust the cable around the foot pedal.
The next stage will likely be to remove all 4 nuts from their studs. This allows the cylinder to simply be pulled off in the actuator studs. An additional image – –
It should be emphasized that typically an actuator cylinder seal leak is something that starts little and grows. At some time, it HAS to be handled, but It's not ordinarily a thing that comes about speedily and causes speedy street failure or lockup of the parking brake.
This can be the needle valve rod. When latest is applied to the coil, this valve is forced downward, compressing the spring and closing both of those the smaller port at The underside of the needle rod As well as the greater valve formed by the #four inner casing along with the #three outer casing.