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Old 05-31-2010, 05:39 PM   #1
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Allison Tranny - 5 speed

Hi all,

I am looking at an 05 Itasca Suncruiser 35u on a WH chassis with 5 speed Allison tranny

I am sure the 5 speed is way better than the Ford tranny on my 02 Damon but I know nothing about them.

Is the 5 speed a great tranny? Is there anything I should look for? Has it had many problems?

I am desperate for info so any help would be appreciated

Thanks

Preston
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Old 05-31-2010, 06:03 PM   #2
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I have a 32 ft 05 southwind on a w20 chassis with a 5 speed allison tran. Have had no problems of any kind. The trany has really done a good job , shifts smooth and I love the grade brake. You may want to ask if the trans. has transsynd fluid in it , if not you would maybe want to change the fluid .not a hard job to do i did mine ,kinda easy to do. Also you'll like the turning radius of the work horse and the engine will give you plenty of power. hope this helps
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Old 05-31-2010, 06:05 PM   #3
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Very satisfied with ours. Your '05 should have the grade brake which does help hold the speed on downgrades saving on the brakes. (Less so for 7 to 10 percent grades in the Rockies.) I think the 6 speed has an additional overdrive and a lower gear ratio, but I have had no issues with power or limitations of gearing. If you like the coach, the tranny is a no-worry.
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Old 06-01-2010, 12:45 PM   #4
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An Allison Transmission is the Industry Standard by which all others are judged. Other transmission makers compare themselves to an Allison as it sets the benchmark. The transmission in the 2005 Workhorse may be an LCT1000 or a 1000MH both which were filled with Transynd beginning on April 6, 2005.

If you have a vehicle equipped with an Allison Automatic Transmission, go in confidence!
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Old 06-01-2010, 01:08 PM   #5
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The Allison has a great reputation and the grade brake is a major (to me) feature. Some of the 5spd Allisons have it, some early ones don't. My 05 Trek with the 5spd didn't have the grade brake, Brazels added it for about $1k. Good investment.
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Old 06-01-2010, 01:55 PM   #6
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Wait till you go through the mountains with the Allison Grade Brake (Standard on the 2005 in motor homes) you will never drive a Ford again

The Allison 5 speed is the 2nd greatest RV transmission ever built

What's the greatest... Allison 6 speed of course. Allison designs are tested under very harsh conditions, they test the parts to -40 degrees they test the at very high temps (over 120) they test them at overload.. Then they put it all together and test it in a very large hot/cold room assembled. If the design does not pass these tests.. Allison does not build it.
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Old 06-01-2010, 03:01 PM   #7
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Thanks for all of your comments. The RV I am looking at a chassis build date of Dec 22 2004. The Allison tranny is a 1000 series 5- speed. I must assume that unless the previous owner used the Transyn fluid it may not have it. It also has a grade braking feature

Thanks again for you help - I am sure you will hear from me again

Preston
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Old 06-01-2010, 08:54 PM   #8
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I have about the same build date on a W24 chassis and the Allison tranny is a 2100 series. I changed out the fluid to AMSOIL Torque-Drive all has worked great for about 4000 miles now. Grade brake works great. Good Luck
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