Print Page - Parting out MCI 7

Title: Parting out MCI 7
Post by: LowTide on March 07, 2014, 04:05:45 PM

I ran across this MCI 7 being parted out and thought that someone might be interested in some parts.

The radiators got my attention.....;)
http://lasvegas.craigslist.org/rvs/4346276620.html (http://lasvegas.craigslist.org/rvs/4346276620.html)

Make it a great weekend!
Mike

Note: I have no affiliation with this ad or person....just happened on it.

Title: Re: Parting out MCI 7
Post by: Tikvah on March 07, 2014, 05:14:14 PM

Quote740 electric shift Allison auto trans with retarder

What is a retarder on a transmission?

Title: Re: Parting out MCI 7
Post by: LowTide on March 07, 2014, 05:25:43 PM

Quote from: Tikvah on March 07, 2014, 05:14:14 PM
What is a retarder on a transmission?

I have no idea, I am new to this.

Title: Re: Parting out MCI 7
Post by: Jriddle on March 07, 2014, 05:43:40 PM

Quote from: LowTide on March 07, 2014, 05:25:43 PM
I have no idea, I am new to this.

It is like a brake to help slow you down. No subsitute for service breakes just a helper.

John

Title: Re: Parting out MCI 7
Post by: Tikvah on March 07, 2014, 05:46:02 PM

Quote from: Jriddle on March 07, 2014, 05:43:40 PM
It is like a brake to help slow you down. No subsitute for service breakes just a helper.

John

Like Jake Brakes? As effective?

Title: Re: Parting out MCI 7
Post by: Jriddle on March 07, 2014, 07:14:01 PM

Quote from: Tikvah on March 07, 2014, 05:46:02 PM
Like Jake Brakes? As effective?

Can be. But could get transmission hot if used for prolonged periods. http://www.svfd.net/SVFD%20Files/Articles/Engineer/Retarder%20Operation%20How%20Does%20It%20Work.pdf (http://www.svfd.net/SVFD%20Files/Articles/Engineer/Retarder%20Operation%20How%20Does%20It%20Work.pdf)

Title: Re: Parting out MCI 7
Post by: wg4t50 on March 08, 2014, 01:00:37 AM

Having the Allison 4000MHR w/retarder in my 31,000 lb coach, while towing a 4,500 F150 pickup, desending a 6% interstate for 6 miles at 45 mph in 4th gear, the retarder temp goes to 270, sump to 230 engine coolant temp to 210 while not using the foot pedal. Surprising the engine water temp runs higher down the mountain than when going up with the 500 hp ISM. Yes I love it and would not feel as comfy with a Jake on a DDC 71 or 92, once you experience one, you get sold speedo.
Dave M

Title: Re: Parting out MCI 7
Post by: luvrbus on March 08, 2014, 05:39:36 AM

Some diesel engines the retarder is your only choice the older L-10 Cummins are a PITA to install Jakes

Title: Re: Parting out MCI 7
Post by: ol713 on March 12, 2014, 09:25:27 AM

Hi;
Thanks for the info. I have a 70' MC-7 also and am always
looking for parts. Was surprised to see a bus in Las Vegas
craigs list actually located in Calif near Readding. It is a long
way from me, but I will contact the seller and plan a trip.
Thanks again, Merle.

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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: LowTide on March 07, 2014, 04:05:45 PM