3800 6 speed manual swap parking brake options

[Ironworker85]

Hey guys I hav a 1998 international 3800 i am swapping out Allison auto for a Eaton 6 speed manual I hav almost everything I need I picked up a 4900 for a parts trucks so I hav pedal assembly linkages flywheel and trans. I pulled Allison out gettin ready to instal Eaton the problem I am runnin into is I hav a spicer n190 rear with hydro brakes in the swap I loose a parking brake I know I’ve seen rears with pinion brakes for park brakes. I’m shur some one has ran into this problem before and info would help on best route to take I would really hate to loose having a parking brake. Thanks guys in advance for any help

[EastCoastCB]

Originally Posted by Ironworker85

Hey guys I hav a 1998 international 3800 i am swapping out Allison auto for a Eaton 6 speed manual I hav almost everything I need I picked up a 4900 for a parts trucks so I hav pedal assembly linkages flywheel and trans. I pulled Allison out gettin ready to instal Eaton the problem I am runnin into is I hav a spicer n190 rear with hydro brakes in the swap I loose a parking brake I know I’ve seen rears with pinion brakes for park brakes. I’m shur some one has ran into this problem before and info would help on best route to take I would really hate to loose having a parking brake. Thanks guys in advance for any help

I had a 98 3800 shorty. It had hydro brakes and an air parking brake. You'd have to add a compressor but then you'd get that satisfying "pshhhhht" sound when you park it. And you could have air to run tools n stuff, and an air seat.

[Ironworker85]

I have a compressor it had a air park drum on rear of Allison I have the air just having a hard time finding a drum park brake for the spicer rear trying to find part numbers is tuff I’ve found carriers for that rear with the brake but can’t find the brake set up alone

[bluebird90]

Find a drive line brake that will fit on your trans. there are also drive line brakes that go in place of a center bearing.

[Ironworker85]

I’ve done a lot of searching on line I’ve seen pictures of Eaton 6 speeds with drive line brakes just can’t find any more info besides pictures I spoke with the guy at Eaton but he can only tell me wat his computer is telling him they were made at one point but he does not have any numbers for parts I do know the spicer yolks fit the Eaton trans so I’m trying to see if anyone has tryed the trans brake of the spicer 5 speed to the Eaton 6 speed kinda a far shot but very hard finding out any part numbers on there’s older trans

[Booyah45828]

Do you have a model number for the eaton you're installing?

I assume the allison you're removing has the trans mounted parking brake? If it does, I think a transmission mounted parking brake would be what you'd want to install. But without the model # of your trans, any google search a person does won't yield anything specific.

[banman]

Originally Posted by Ironworker85

I’ve done a lot of searching on line I’ve seen pictures of Eaton 6 speeds with drive line brakes just can’t find any more info besides pictures I spoke with the guy at Eaton but he can only tell me wat his computer is telling him they were made at one point but he does not have any numbers for parts I do know the spicer yolks fit the Eaton trans so I’m trying to see if anyone has tryed the trans brake of the spicer 5 speed to the Eaton 6 speed kinda a far shot but very hard finding out any part numbers on there’s older trans

You might find a Medium/heavy duty truck salvage yard has a better idea about parts interchange and what you're looking for used.

[Ironworker85]

Yes the model Eaton FS6206a I’ve spoke with the Eaton tech support they kinda jus read ya wat the computer tells them haven’t got anything solid out of them in a direct to look. I stoped at a salvage yard on my way home from work found I few manual trans that are mid size with park brakes that look like they may line up but hard to tell until ya hav it apart

[Jolly Roger bus 223]

thats a rabbit hole for sure.
i did find a little bit for sale but already sold through VaanderHaughs auto and for my area a used parts place i know called LKQheavy truck parts and i know they are bigger than my area but i dont know if its more east coast stuff.
dont know your location but they have always been able to give me comparable part numbers to hunt down.
good luck

[Jolly Roger bus 223]

most of the transmission parking brakes that are comparable to what you are looking far supposedly bolted directly to the transmission output flange but didnt see any pics of the driveshaft output connection from the drum brake.
also it used to be called the driveshaft drum brake if i didnt say that in my last post.