Exhaust Brake Question - Motorhomes - Class A, B or C - Campgrounds, RV Parks and RV Resorts

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1/25/2012 7:17 PM

	henryinreallife
126 posts

Exhaust Brake Question

Every time that I use the exhaust brake on my MH, the gear indicator readout goes from 6 to 2. Is this normal? Our class A has an Allison 6-speed transmission with a 400 HP Cat C-9.

1/26/2012 8:28 PM

	angela
133 posts

Re: Exhaust Brake Question

From what I know, Allison transmissions are programmed depending on your chassis marker's request. 2 is the pre-select gear. That's so that it won't over-rev the engine.

1/29/2012 9:25 PM

	padmej
124 posts

Re: Exhaust Brake Question

Sounds pretty normal to me. We also got an Allison in our motorhome. The left number's read out goes to 2 when we slow down while the right indicator slowly goes down from 6 to 5 to 4 and so on.

4/11/2012 8:22 AM

	ejdixon
116 posts

Re: Exhaust Brake Question

Checked it with my friend who's got the same class A as you do and he told me that it's just normal for it to do that and you have nothing to worry about.

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