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Thanks Juan and I have checked out your coolant filter setup numerous times, but all the plumbing seems daunting, but after yesterday's experience, it just got added to the list. I may have to pick your brain though when it comes time to buy parts, especially regarding thread and hose size. I...

Calling what I drained out of my radiator diarrhea is being complementary of loose stools. Makes me wonder how long the beast must have sat for good coolant to assume such a state, that is if there ever was good coolant in it to start with. It went thru a bunch of MWO's in 2010 according to the...

Check out Westfolk's site. He makes great adapters for everything and they're affordable...

I finally got around to replacing the coolant in my M934. What should have taken a couple of hours at the most, ended up eating up the entire day. I knew something was wrong when I opened the drain cock and nothing come out, that is until I took a small Philips head screwdriver and poked it...

Looks like the auction winners become the victims of GP's success. BTW, thanks for your input Jwade...

This conversion is on my list of things to do, possibly next weekend. I've heard it's a real PITA to get the engine primed once you've made the changeover. What did you do to finally get it primed? Thanks... Mark

Should you be interested, here's the item number from the big auction site for the new dryer unit that I purchased: 191419423518. Looks like he's raised his prices a bit, but he has sold 58 of them...

When I purchased my truck everything went fairly smoothly with GP. They said 6 weeks for the SF 97 and it was 6 weeks. My problems started when I went to the McLennan Co. Tax ASSessor's office to get it titled and registered as a FMV. Man, talk about a bunch of dense wingnuts! I'm thinking GP...

Try Cimarron Westfolk (cimarron@minister.com). He makes quality oil and fuel spin-on conversions for Deuces and 5-tons...

I've read the same thing here on the forum and as soon as I find the necessary parts I'll be able to decide if it's worth it to rebuild the old. I'm hoping that the new one that I installed is good to go for as long as I own the truck and then some...

Yep, I think the seller referred to it as the new version, I think he said off of an MRAP, but I'm probably mistaken about that. It's pretty much identical to the old one when placed side by side, except for how it mounts and I did have to swap put one of the air fittings from the old one to the...

I'll second all of the above. I knew the air dryer was troublesome and that's why I bought the new spare but it's kinda funny how something can go from 100% to 0% operational overnight. Of course it could have just been my trucks way of saying that I needed to slow down and not plan so many...

A partial victory, BUT I'LL TAKE IT!!! After some good advice and motivation from several members, I went ahead and changed out the original air dryer with a NOS unit that I purchased shortly after buying the M934. The new dryer must have been a "one size fits all" unit, as I had to drill 3 new...

dilligaf13, your 1st piece of advice was greatly appreciated. Your 2nd piece, I'm not so sure about. I'm thinking (hoping?) that the air dryer replacement may cause some back discomfort that will require getting horizontal on something considerably softer than the ground!

I gotta think that if nobody like NAPA carries it, then Cummins must. Guess I'll try taking it apart and cleaning it, AFTER I find a replacement source. Thanks... Mark

After taking dilligaf13's advice and using the air brake over ride to get the beast back under cover and out of the drive, I crawled underneath and removed the cup from the air drier. What I found is shown in pix 1 & 2: There was no moving the spitter either up or down, even after a liberal...

My '86 AM Gen started as usual this morning and I let it warm up while I loaded a few things. When I climbed back in, the low air pressure warning light was no longer blinking and both air pressure gauges showed +/-90 PSI and I assume were climbing to the usual 125 PSI. I backed about half way...

I'm thinking more along these lines:

I think that it's better and probably cheaper to buy an entirely new unit off the interweb for +/-$120 instead of screwing around with replacing kits, filters, etc., but then that's me... Mark

Any definitive knowledge if the M939/A0/A1's were delivered from the factory with ATF or the 10W for "extreme use"? And when changing the fluid and filters, is it necessary to "flush" the tranny with something prior to adding the new fluid, whether replacing the fluid with what was removed or...