Parking Brake

92_SquareEye

92_SquareEye

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Oct 18, 2015
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I recently did a junkyard drum to disc swap on my d35 using 96 Grand Cherokee parts. The brakes work great, but I didn't get the pieces for the parking brake. NC state inspection requires a parking brake so I need to get something in fast. Am I limited to finding internal drum brake parts for the rotors, or is there another option? I don't think I'd want to do a pinion brake on a d35, but the reality is that it will rarely be used as I always leave it in gear. Thanks for any input...

-dave
 
Do you have any of the hardware? You'll need the shoes and the parking brake cables from a disc-equipped vehicle (assuming you have a TJ, but XJ, etc would be similar). Those are easy to get from the parts store. The hardware kit is (probably?) readily available, but other hard parts like the actuator arms might be more difficult to track down.

Fixing what you have is probably the easiest route, though.
 
Thanks. It's in a YJ with a super 35. I was afraid of that. I think my best option would be to go get the hardware from another 96 era GC axle from a u-pull-it or such. Any chance you know if I'm limited to a d35 or would the d44 work also? I'm pretty sure that the rotors and calipers are the same...not sure on backing plates...
 
I have been thinking on this topic again lately. I converted my slip-yoke to a fixed yoke and built a drive line parking brake on mine (which was an expensive pain in the tail) but just had a rental Subaru with an electronic parking brake that worked off the hydraulics. You put it in park, hold the pedal and push/hold a button on the console. The brake pedal drops a tad and the light comes on for the brake. I want to look into how those systems work and see if it can be retrofitted to the kind of thing we do. It's not the same as a line lock, that's for sure.
 
Only OneDR, their called "line locks", & you can get them electric or manual. You "T" it into the rear brake supply line. It's possible to do a front line, but most choose the rear. I went with the old fashion, " Micro Lever Lock". It's manual, & you set it with a lever. None of these are approved by DOT [that I know of], for a Parking Brake, as they work off hydraulic pressure, & could possibly leak down. That being said, I've Never had a problem with mine. As for Inspection, it's up to Who you know or Where you go. Many stations don't bother to check the parking brake. I have All the factory equipment in place, & working, but My factory parking brake, wouldn't hold a good breeze!
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I have a '15 Cherokee that has the electric brake also and tried to think of a CHEAP way to make that happen. I think I'm best going with what I have so I pulled another set of backing plates from LKQ last weekend, but the cables from the GC won't work. I gave away my old shafts and backing plates and am trying to get the two e-brake cables back. Hope to tackle it after the Thanksgiving holiday. In other news, I got the dimmer switch wired in yesterday!
 
rodney eppes said:
Only OneDR, their called "line locks", & you can get them electric or manual. You "T" it into the rear brake supply line. It's possible to do a front line, but most choose the rear. I went with the old fashion, " Micro Lever Lock". It's manual, & you set it with a lever. None of these are approved by DOT [that I know of], for a Parking Brake, as they work off hydraulic pressure, & could possibly leak down. That being said, I've Never had a problem with mine. As for Inspection, it's up to Who you know or Where you go. Many stations don't bother to check the parking brake. I have All the factory equipment in place, & working, but My factory parking brake, wouldn't hold a good breeze!
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The systems he is talking about is not a line lock.

The factory electronic parking brake uses a servo mounted on the caliper to apply the brake. Subaru & some European cars have been using this system for a 5+ years now. Might be able to find something in a yard or ebay.

Most of them use a computer to turn on and off, but if you learned the required signal to the servo, it would be an easy circuit to replicate. My main concern would be water/mud messing it up.
 
rodney eppes said:
Only OneDR, their called "line locks", & you can get them electric or manual. You "T" it into the rear brake supply line. It's possible to do a front line, but most choose the rear. I went with the old fashion, " Micro Lever Lock". It's manual, & you set it with a lever. None of these are approved by DOT [that I know of], for a Parking Brake, as they work off hydraulic pressure, & could possibly leak down. That being said, I've Never had a problem with mine. As for Inspection, it's up to Who you know or Where you go. Many stations don't bother to check the parking brake. I have All the factory equipment in place, & working, but My factory parking brake, wouldn't hold a good breeze!
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Click to expand...

Yeah, I know what line-locks are. Not the same thing. I did more research later and learned what @paradisePWoffrd posted above. They are electronic servo controlled caliper pistons. Line locks cannot maintain for long periods of time or build any pressure beyond what is applied from the master cylinder.
 
What's stopping you from using the 96 GC parking brake stuff? You could get everything you need (clips, springs, pads, etc) for really cheap from Rock Auto or wherever, and you already have the expensive stuff if you've got the OEM backing plates. A hardware kit (spring, clips, adjusters) is about $10, pads are about $12, etc. I think you'll reuse the stock cables and not use the GC cables..
 
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