The following drawing of an AutoPark parking brake actuator is lousy excellent, but for some people it maybe helpful due to the illustrated specifications.
be almost excellent. Any extra slack and the brake will never hold firmly, and too much stress will likely have the footwear dragging. Although this type of process can tolerate almost no have on or cable stretching without the need of want for adjustment, it should be remembered that this can be a static brake – – not a dynamic brake.
one. If you can’t really reach the swap, you could potentially just take a small paint brush and duct tape it to the adhere – – offering the necessary added attain. Get the comb liberally smeared up with a sticky grease like LubriPlate.
With the above mentioned part selection, It's also advisable to have the capacity to visit an honest car sections retail outlet like NAPA or CarQuest, and have them buy it on an overnight basis. They might ought to recognize that this is a GM part variety so they can do a cross-reference.
In the AutoPark configuration, a effectively altered procedure has a complete toss in the actuator, of about 1.
Condition A – – All lights are OFF. This is suitable ONLY if the ignition is OFF. Less than every other situation, parked or rolling, it means you have got misplaced voltage to the AutoPark Manage circuit. In case you are rolling, your parking brake has Now APPLIED. Be encouraged that at street speeds, your motor can overwhelm the parking brake, so you can also make it on the road shoulder.
We have found a much greater process for “tapping into†an present wire. As opposed to using the folding “matchbook†type of connectors which you squeeze on by using a pair of pliers, we now (enthusiastically) recommend the more recent “force-in†type of connector.
This details sheet is new, and is particularly penned to deal with an AutoPark parking brake problem that is becoming pretty widespread in just the previous couple of months.
Within the lessen picture, without hydraulic force from the cylinder, the piston/shaft will transfer the many way to the best. (For applications of the illustration, ignore the modest degree of fluid shown before the piston. In true follow, the piston would “bottom out†When the my company actuator wasn't mechanically connected to the brake technique).
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2. It really is remotely achievable that the big fusible link (60 amps or so) that guards the relay and motor, could possibly be blown. We’ve never noticed this materialize as but, but it really needs to be deemed. Just one could exam for this rather quickly, by pulling the connector off on the relay, and examining for that presence of twelve volts on on the list of two significant  wires in the female connector.
Below ordinary situations, in the event the stress is taken off and also the spring expands, the piston journey is limited with the cable drawing limited as the brake shoes tighten towards the drum. So When the sneakers are poorly worn, or even the cables way too free, the piston will journey farther than it will otherwise.
Furthermore, You will find a lever arm in collection With all the cable method for AutoPark, and due to the configuration of this lever arm, if the actuator moves 1.twenty five inches, the cable visiting the brake drum could only move about an inch.