Replace new SET20s?

[Shimmy]

I put new 31 spline axles in last summer. I'd say i probably have 200 miles or less on the SET20s. I bought that new Range rear brake disc conversion and i'll need to remove the axles to install the caliper brackets. Range is recommending I replace the SET20s again. Whats everyone's thoughts on this? I was thinking i'd be fine to leave them since they had such low miles. am I missing something? I'm somewhat new to understanding SET20s.

 

[Timmy390]

While I have not installed disc brakes.....I can think of no reason to replace (what I would consider NEW bearings) just because you upgrade. Now if it requires welding while the axles and bearings are in place (say for proper alignment of the caliper brackets) then due to the heat......I would replace them.

Tim

 

[DirtDonk]

Removing the axles, but you don’t need to remove the bearings from the shafts. Correct?
If so, I would keep the same bearings and maybe do a little more diligence to keep them sealed.
The biggest potential problem I see is that pulling them out and putting them back in could create an oil leak. But to that, there’s probably almost as much probability of an oil leak with new bearings as there is with the old ones. Especially when the “old” ones are not that old!

I’d leave them in place and give it a try. Maybe put a little bit of sealer around the perimeter seal?
Wait and see what others say about that.

 

[DirtDonk]

Got a link to any instructions for the disc brake kit?

 

[Shimmy]

thanks for the quick input guys! no welding it all bolts on. Range doesn't have ford 9" specific instructions so they sent me these for an 8.8

https://cdn.shopify.com/s/files/1/0...-dad5-41c5-a44c-c2dbbd0a1fda.pdf?v=1769189454

i'll be using this kit with the wilwood dash switch. i'll plan to do a little write up here so we can all see the parts, install and outcome too

 

[DirtDonk]

Thanks. Can’t wait to see the write-up!

 

[jamesroney]

Thanks. Can’t wait to see the write-up!

I worked on a set of those last week. Look like 2023 Toyota Tundra calipers with EPB. Basically a Cadillac caliper with a gear motor on the lead screw.

There's only two wires on the gearmotor. 12VDC + and -. Pretty simple.

The Toyota control system is moronic, and the automatic deployment is absurd. They use DC current monitoring to interrupt the drive voltage. So if you walk past the car with the fob when the caliper is loose, it will unwind the caliper piston into oblivion...and puke the piston out.

I am intrigued by the driver controlled push button might make it all OK. I will have to see what happens if you push the button for too long. Relying on sound for feedback is problematic.

Someone will have to invent a current limiting controller so that you can fire-and-forget. Otherwise using it with the engine running will be a problem.

 

[Oldtimer]

Power windows seem to have a current limiting controller, though EPB probably draws more than a window motor?

 

[Broncobowsher]

If I see it right, there is a bracket that needs to go between the bearing and the axle. You have to take the bearing off the axle to install the bracket. Getting the bearing off and put back on again without damage, is probably where the new bearing is requested.

 

[Shimmy]

I worked on a set of those last week. Look like 2023 Toyota Tundra calipers with EPB. Basically a Cadillac caliper with a gear motor on the lead screw.

There's only two wires on the gearmotor. 12VDC + and -. Pretty simple.

The Toyota control system is moronic, and the automatic deployment is absurd. They use DC current monitoring to interrupt the drive voltage. So if you walk past the car with the fob when the caliper is loose, it will unwind the caliper piston into oblivion...and puke the piston out.

I am intrigued by the driver controlled push button might make it all OK. I will have to see what happens if you push the button for too long. Relying on sound for feedback is problematic.

Someone will have to invent a current limiting controller so that you can fire-and-forget. Otherwise using it with the engine running will be a problem.

yah it looks like you hold the switch for a few seconds to engage and disengage. i didn't realize this when i bought the kit... but i shoulda thought of it considering there's no "brain" or module that it connects to

 

[jamesroney]

yah it looks like you hold the switch for a few seconds to engage and disengage. i didn't realize this when i bought the kit... but i shoulda thought of it considering there's no "brain" or module that it connects to

I think I like the simple switch better. I just wonder what happens if you hold the switch for too long.

I know if you hold the switch too short on disengage...it will drag. But I just don't know if it's OK to stall the motor.

 

[Broncobowsher]

Sounds like an easy Arduino project.
A long time ago I made an electric shift transfer case run stand alone with an Arduino. Pretty easy project.

 

[Got4wd]

When I was talking to Kincer they said they could program the cam buss on certain drivetrains to put it in park and it would set the parking brake take it out of park and it would release. I’m hoping to do that for my build. Simple

 

[Qumanchew]

Pantera electronics makes a nice stand alone controller for electronic parking brakes. I have one for a custom setup on my Bronco, just haven't gotten time to finish it up. You just push the button to engage and disengage, you don't have to hold it. If I remember correctly it measures the amp draw to set the right amount of pressure.

 

[Shimmy]

Pantera electronics makes a nice stand alone controller for electronic parking brakes. I have one for a custom setup on my Bronco, just haven't gotten time to finish it up. You just push the button to engage and disengage, you don't have to hold it. If I remember correctly it measures the amp draw to set the right amount of pressure.

nice! link to it?

 

[Qumanchew]

https://www.pantera-electronics.com/epbcontroller.htm

 

[Qumanchew]

I have to warn you though, they are not the easiest to order from, they don't accept credit cards for payment. Old school I guess.