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How long was it idling before you tried to shift it? I'm wondering if it's just got air trapped in the circuits and you haven't worked it out yet to build fluid pressure.

The 8.3 has more rated torque. Is it that you have to wind it up to get into the boost before the power comes on or what?

That isn't the switch that gets tripped with the emergency kill switch on the dash is it?

What are you planning on using the truck for? The turbo gets nearly double the fuel economy.

You've never had this truck running under it's own power right?

I'd actually start with the low fluid check. There's a procedure for checking it cold so you can warm it up to then check it properly.

http://igor.chudov.com/manuals/M939-Series-Trucks/Allison-MT-654CR-Transmission/Allison-AT-MT-HT-Transmission-Operators-Manual.pdf http://allisonparts.net/Allison-Transmission-Parts-Tips.html

The depot level of maintenance is always to replace the parts that don't work right. It's never to fix the problem with the components. Find the TM for the transmission and you should have the proper troubleshooting steps. I got conned into thinking I'd be fixing jet engines with my MOS 67U -...

Is it possible to upfit the super singles with run flats?

Was the front tire flat at the auction yard? Sounds like it got pinched at some point.

My understanding of the condition codes: If your unit is only using Freightshaker XYZ's it's not possible to repair a Mack ZXY into deployable condition. It's now an H even if it's still new in the crate.

No worries. I'll figure it out when the time comes. :)

If you register it as an RV, wouldn't you be limited in what you could haul with it? Can you register it as an RV with a 42,000 GVWR?

How difficult was rigging the plow up? I'm probably going to end up using mine for plow duties down the road.

Hank, what do you pull with all that hardware?

True "unity" should show up as invisible to the meter, but it's impossible to strike an arc with zero potential difference on both sides of the gap.

Everything I've ever read about power factor correction has said that unless you have a very high duty cycle (production welding with humans isn't even capable of achieving this), the effect is an increase in current consumption, not a savings. The correction can only be tuned for a certain...

Some meters behave differently than others. Our new(er) digital meter thinks my variable frequency drive driven machinery generates more than it uses from the reverse current generated through the deceleration cycle. I actually save money running my machines more than when I don't. :lol: But...

You'd do better to remove that power factor correction module and bump your breaker up 10% over the peak current - look up de-rating for welders in the NEC. Those caps leak current across their poles and you might be upset when you see your electric bill. Those kits are meant for industrial...

It's not like the brakes are going to wear more than a similarly sized truck, the tires will weather check more than they'll lose tread unless you're putting a lot of mileage on them. The suspension shouldn't wear disproportionately to the mileage either. And the engine and transmission...