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Author Topic: Replacing the Compressor  (Read 412 times)
Dave5Cs
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1979 MCI MC5Cs 6V-71 HT-740 Allison, Roseville, CA




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« on: April 25, 2013, 09:18:37 PM »

Do you have to drain the whole system, oil and antifreeze when pulling the compressor on my MCI ,6V-71, or just below the compressor. The book sounds like all or just the compressor?

Also does anyone know what 740 Tranny takes in Gallons for a fluid change. I believe it is just ATF in mine because it is Red.

Dave5Cs
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TomC
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« Reply #1 on: April 25, 2013, 11:16:15 PM »

You just have to drain enough coolant so the coolant is below the level of the compressor. You do not have to drain the oil-but most likely you'll get some coolant in the oil-hence you should change the oil afterwards. Good Luck, TomC
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Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
luvrbus
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« Reply #2 on: April 26, 2013, 05:31:45 AM »

Dave the 740 takes 7.5 gals with the standard 5 inch pan + the filter and cooler most will be around 10 gals when done

good luck
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Life is short drink the good wine first
Dave5Cs
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1979 MCI MC5Cs 6V-71 HT-740 Allison, Roseville, CA




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« Reply #3 on: April 26, 2013, 05:36:43 AM »

Thanks Tom and Clifford the book was not clear on either.

Dave5Cs from Galaxy S III
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luvrbus
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« Reply #4 on: April 26, 2013, 05:49:29 AM »

FWIW my NAPA store here as probably yours can order the pan gasket and the internal filter some 740's have a washable internal filter


good luck
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Life is short drink the good wine first
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