Doug Nash Overdrive Unit Question
Laughing Gas
Joined: Feb 2002
Posts: 1,067
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From: Kincardine, ON
Doug Nash Overdrive Unit Question
I did a quick search and copied the following:
"The US Gear Dual Range unit was originally designed and initially built by Doug Nash Transmissions several years ago. Internally it's a very conventional-looking husky two speed gear box that uses an electric servo motor to shift between its two ranges. It stays in the range it's left in, even in reverse or with the engine off. Because of its basic gear box design, it can be configured as a conventional overdrive or as an underdrive. (Older models at least can be reversed back and forth - but two of the gears need to be replaced to do that. There's also the issue of putting new gears in with worn. Also keep in mind that US Gear reportedly doesn't support the Mile Marker and Doug Nash manufactured units - those with serial numbers below 20,000 - if you're thinking about buying a used unit.)"
I don't know how accurate the information is but the RV site I found it at looked good. Hope this helps.
John
"The US Gear Dual Range unit was originally designed and initially built by Doug Nash Transmissions several years ago. Internally it's a very conventional-looking husky two speed gear box that uses an electric servo motor to shift between its two ranges. It stays in the range it's left in, even in reverse or with the engine off. Because of its basic gear box design, it can be configured as a conventional overdrive or as an underdrive. (Older models at least can be reversed back and forth - but two of the gears need to be replaced to do that. There's also the issue of putting new gears in with worn. Also keep in mind that US Gear reportedly doesn't support the Mile Marker and Doug Nash manufactured units - those with serial numbers below 20,000 - if you're thinking about buying a used unit.)"
I don't know how accurate the information is but the RV site I found it at looked good. Hope this helps.
John
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Joined: Oct 2008
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I have what I am told is a Doug Nash unit it has a DNE2 cast in the side then R1A1 by the serial of 001464 casting no 71-8003 on the case and 72-80014 on the adaptor its for a C-6 but I was wondering if its an overdrive or underdrive unit I called USGears but they wern't much help Thanks
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Joined: Apr 2004
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See similar post by N.W. O.
Google "doug nash overdrive" and get:
Doug Nash Overdrive Problem Page
and lots of others. Some problems, may be fixable, no support from US Gear from what little I read on the search.
Good luck.
Google "doug nash overdrive" and get:
Doug Nash Overdrive Problem Page
and lots of others. Some problems, may be fixable, no support from US Gear from what little I read on the search.
Good luck.
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