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Old 01-22-2017, 04:34 PM   #1
Bus Nut
Join Date: Jul 2013
Location: Maryland / Boulder
Posts: 345
Year: 1999
Coachwork: Thomas Built
Chassis: Saf-T-Liner MVP ER
Engine: CAT 3126b Rotella-Chugger
Rated Cap: 72
3126b Exhaust Brake

Hey all,

Has anyone ever added an exhaust brake to this driveline, or have a bus that already has one? After using a RAM 2500 with a Cummins and exhaust brake to tow a car 2500 miles, I am sold on exhaust brakes, and wondering how hard it would be to retrofit one. I found a used one that is compatible with my engine:


And some documentation on a unit that is similar (but not the same):

Looks like with the Allison trans I have it would require some additional wiring and programming, which I could do, but out here in the rockies it would definitely not be a bad idea! I will do some more research to see if it is feasible, but if anyone has any insight it would be much appreciated.

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Old 08-25-2018, 04:55 PM   #2
Join Date: Sep 2016
Location: Wausau, WI
Posts: 32
Year: 2003
Coachwork: Thomas I think...
Chassis: Freightliner FS65
Engine: CAT 3126
Rated Cap: 72
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did you ever figure out anything with this, i'm sort of curious also..
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Old 12-18-2019, 09:43 PM   #3
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