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15K miles or 3 years for most cars. Heavy duty trucks have larger filters to offset the increased fuel requirements. I still couldn't see it needing to be changed any more frequently. Sounds like you either have contamination or a different issue. The fuel filters also act as a polisher, as it...

I posted most of what I did in my WeenieWagun build thread.. I also found my stash of 24V LED marker bulbs and headlights that was going to go in my deuce and now repurposed to my 5T, so that'll be getting done shortly. Also needed these.. sharing for those who don't know how easy they are to...

Is it more on your tailgate? or all over? Oil that's coming from a leak below the truck, especially from the driveline, will cause oil spots on the rear of the truck if you're driving at speed. Nothing I can think of can cause oil spots other than that. If your exhaust has OIL in it, and...

Did it rain? Could be water capturing soot particles coming out of the exhaust, and dropping onto the truck. If it's a light rain/mist it'll do that. It'll also do that if the truck hasn't been driven for a while and condensation builds up in the exhaust stack. The second you give it some gas it...

They're very popular in motor coaches... where they're routinely outputting 350 HP for hundreds of thousands of miles. There are also Marine versions (as in, boats) that push 400HP.... 1100 ft lb of torque seems to be the upper limit for all variants. First thing I need to do is get all the...

Supposedly same as the NHC250, but since it relies on a turbo, it definitely is lacking a bit until it spools up. Nice thing about the 8.3 though, is it's easily modified to crank out a bunch more power. Per Wiki...

Alright so.... time to update... M923a2 I got from local auction. High bid $7100, almost 2k$ in taxes/fees/transport costs.. Going from 1100s on my M934 to 1400s on the A2.... holy crap. It's only like 3 inches but it feels like it's a good foot higher trying to climb up there.. I'll be...

If you don't remove the return line, it's gonna suck it all in pretty quick....and dump most back in the tank and dilute it. I forgot to mention you'll want to put the return line in your bucket 'o purge, so it's cycling through nothing but your mix. If you're using just seafoam, or a light...

To the above - If you're looking at cleaning/freeing up the fuel selector valve, then you can disconnect both lines and run both of them into your pail that you're sucking your purge solution from, then just keep moving the valve back and forth as it's sucking it in, 30 seconds or so on each...

If you want to get stuff out of the tank and lines, then yes. You can also run biocide if its been sitting for a while. If you want to purge the pump, injectors, etc and clean them out, then you disconnect the supply line going to the IP/PT pump, and your mix of seafoam, power service, ATF/OIL...

I've tried 3 different 3/8 compression fittings... All have a different thread pitch than the factory connectors... same with the caps... I have no clue how that's possible, but it is. I'm just gonna end up cutting the lines and using the DOT 3/8 compression union.. I was hoping to be able to...

Double check your grounding at the tank. It's almost always a ground issue since the fuel level circuit uses the tank/straps/chassis as return ground path. You can pull the valve and clean it. It's messy, but doable. One thing you might want to do, provided you have spare fuel filter, is dump...

My 'lane' is to protect myself, and the hobby. If the shoe does not fit, then clearly it's not yours.

You're driving around a 40K+ lbs truck... and you don't even know where the fuel selector lever is? Pray you don't get into an accident, as the other party's attorney is gonna have a field day... This isn't a passenger car you just hop into and drive, you know.

Now would be a good time to read the -10 TM front to back :D

There are 5 ton subforums here.... https://www.steelsoldiers.com/forums/5-ton-and-up.43/ https://www.steelsoldiers.com/forums/m939-series-5-ton-trucks.170/

So.. .Re: above... Apparently not all 3/8 compression unions are the same... The threads weren't matching up at all, and the nut supplied with the union was loose as #(%& on the factory fitting... So, who needs tolerances? So, didn't get the air line mod done. I was able to bend the front axle...

80* here... which is pretty warm for these parts considering it was 35* just a couple nights ago. Got a bunch of parts laid out... Replacing air drain valves with 1/4 turn ball valves. Replacing fuel pickup tube. Adding a Schrader valve to the fuel cap so I can pressurize/self bleed...

Big Mike's has copper tube for $50. I haven't inspected the one on my 923A2 but I figured it was cheap insurance, since I'll be redoing all the fuel lines anyway.

Low power engine. Yellow engine = lots of green to fix. HUGE transmission losses = 45 MPH max speed (~50 if you push it). CTIS = unreliable. Benefits? Auto (could be a con) Super singles Dual circuit brakes (also available in AF M35A2 on '87 contract) Front end looks cooler? Not worth the...