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My HEMTT also idles too fast... About 825 rpm. However I haven't adjusted it yet because it's a big job. Unless I'm mistaken, the above snapshot from the TM is only the idle adjustment step, part of the larger fuel system adjustment procedure which, from my memory, includes adjusting governor...

For the transmission I used Allison's TranSynd TES-295, basically a red colored full synthetic ATF. Heavy truck dealerships sell it, I got mine at a Freightliner dealer, it was the best price I found at about $43 a gallon. I would have liked to flush out the old transmission oil from the...

With the crane hook clipped to the frame in the stowed position, I use the 'hoist - up' control to put just a tiny bit of tension on the cable and have not noticed bouncing anymore. Before doing that, my crane would bounce, even on small pavement irregularities like freeway bridges and...

TM 9-2320-279-20-1 has troubleshooting for the fan clutch and fan clutch valve... "Engine temperature must be approximately 195 degrees F and air pressure between 100 and 120 psi before fan control valve can be checked. Remove hose from fan clutch to fan control valve. If air comes out of fan...

You certainly don't want a transmission banging into gear hard enough to do damage from shock, but in general, the faster it snaps into gear, the better. Lower temps, longer life. Smoothness=slippage=heat+wear. In the automotive world, that is what "shift kits" do... Take away the slushiness...

Mack engine owners probably already know this, but... Engines with flat tappet cams benefit greatly from engine oils with a high TBN and low sulfated ash content, like Chevron's DELO 100 (not 400) or Shell Rotella T1, in a straight 30-weight. Modern multi-grades, like 15w-40, may not protect...

Hard to picture a HEMTT sitting there among all those Corvettes and hot rods... Might be fun but I don't do too well in the heat of summer. Jon

I saw those. Too bad they're electronic... I'm sniffing around for a spare HEMTT engine, just to guarantee I'll never need it. I'd have to look in my Detroit manuals, but I don't think you can just take off the electronics and add a mechanical governor... Jon

I had one fail like that... Just cruising along at about 53 mph and I started hearing a slight ticking, quickly grew to a chatter and 5th gear crumbled. Luckily I was almost home and made it in 4th gear. I've got a lot of theories about why it happened... Prior abuse or a bearing going bad...

Awesome! :beer: Nice to hear that your transmission shifts the same as mine... At first I thought it was malfunctioning, but over the course of the 1,800 mile recovery trip, I came to accept the torque converter unlocking at each shift, and then locking again, as normal. Allison's manual...

I got a reply from Pall Aeropower: "The head-to-bowl seal on the 9800 series filter assembly is a -229 size o-ring. This is a standard sized o-ring, according to the SAE AS568 specification, and should be available at most hydraulic supply houses. The material is nitrile and it's 70 Shore A...

I LOVE fireworks! I just don't want them thrown at me. See, they had a little game going all day where they were throwing M-80s at each other and saying "heads up" so you could plug your ears. The problem was, my wife and I arrived later in the day after she got off work, so we were not "in"...

With a budget of only $500, a used 3053 is your best bet. They're not rare or hard to find, every multifuel powered deuce has one, and there's deuces being parted out all over the country... You just need to find a supplier near you. Also, unless you're going to move the transfer case...

I got my outrigger beams stuck in the 'out' position... Thank goodness the truck is in my backyard. I was playing with the crane, it works great. Went to stow it, everything went well until the last step - retracting the beams. I can hear a slight load come on the engine but no movement...

You're probably right, but I had always thought "they" deliberately made them expensive to discourage people from buying the canisters to huff the pure ether contained within... Jon

Well, it's not the same weekend as Tower Park this time, Tower Park is the following week so I could technically make it to both... We'll see. I'm on a waiting list since they don't have spots available at Tower Park big enough for my HEMTT, so there's also the possibility that I'd come to the...

That's from my favorite movie, he's "Shack" from 'Emperor of the North Pole'.