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Old 01-13-2019, 09:59 AM   #1
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Allison 1000 with 4 speed shift lever?

Allison 1000 in a DP and the shift lever only has R N OD D 2 1.

why can't I select 3rd or 4th manually?

am I missing something?


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Old 01-13-2019, 11:52 PM   #2
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I'm curious what year make and model DP you have?

I didn't know they used the Allison 1000 in diesel pushers.

Learn something new every day on here.

2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS

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Old 01-14-2019, 08:52 AM   #3
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2000 forest River reflection, they only made this model for a few years, on a Spartan chassis Simmit 2000, isb 5.9

It's a smaller one only 33 ft. 19000 lbs dry
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Old 01-14-2019, 03:25 PM   #4
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That is one of the shift patterns available. In another thread, I listed the others.
There aren't enough passages in the valve body to preselect each gear. Each available shift pattern is a choice of which ones to select.
The available shift patterns are:
D-4-2-1, D-4-3-1 and D-3-2-1.
What you likely have is OD is 5. It's a five speed single overdrive. D is 4, 1:1 in the trans and then 2-1. So in Allison terms, you probably have the D-4-2-1.
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