Author Topic: MC-5 wet tank check valve problem?  (Read 7603 times)

Offline bevans6

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Re: MC-5 wet tank check valve problem?
« Reply #15 on: May 22, 2013, 02:07:22 PM »
The reason they moved the wet tank up front is actually so the air has more chance to cool and so gets more condensation - gets drier, in other words.  Combined with an air dryer in later models, the wet tank should never see much water at all.  There is a recommendation somewhere for the minimum length of pipe between compressor and air dryer, something like 15 feet or so.  They put the dry tank in the back of the driver's side luggage bay so it's not in the rear axle space at all.

Brian
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia

Offline Fredward

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Re: MC-5 wet tank check valve problem?
« Reply #16 on: June 03, 2013, 12:24:03 PM »
Well, my hunch proved to be correct. The check valve feeding the dry tank and preventing backflow to the wet tank, must have been sticking. I replaced it with a new 3/4" check valve and the problem went away. This new check valve sounds a lot different than the old one did too.

So this is another example of why it's so important to have manuals. One look at the schematic and the only possible airflow restriction was that check valve.

That all went so well i decided to convert my canister type fuel filters to spin on. Craig aka Gumpy gave me his old spin on filter bases. Simple project, except I damaged one of the brass internal flare hose fittings. Try finding one of those at a truck service place. Ended up at Interstate; they had them.

Always something isn't it?   
Fred
Fred Thomson

Offline bevans6

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Re: MC-5 wet tank check valve problem?
« Reply #17 on: June 03, 2013, 01:31:06 PM »
Congratulations!  nice to finish a project or two, isn't it?

Brian
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia

Offline Dave5Cs

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Re: MC-5 wet tank check valve problem?
« Reply #18 on: June 03, 2013, 04:05:17 PM »
I don't know about you Brian but I am exhausted. I think some ice creme and a nap is needed, !....
Way to go Fred. ;D
"PATHFINDER"(Bus)
Toed 1998 Jeep TJ

Offline Fredward

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Re: MC-5 wet tank check valve problem?
« Reply #19 on: June 04, 2013, 05:57:50 PM »
Funny how being a busnut teaches us to appreciate the small things. I already am excited for next year's fuel filter change. Spin on filters are a real luxury compared to those damn cartridge filters. 

Thanks guys -Fred
Fred Thomson