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You should only have to turn the governor screw 1/4 turn. May be the compressor unloader needs to be rebuilt or there is an issue with the governor. I would lean towards the air compressor though.

Email will atpawnking dotcom. If the batts are weak its best to just replace them.

I have new 24v relays. The 12v ones are over the counter at auto parts store. You can use blade fuses in place of the breakers if needed.

Did u get it home

No power to fuel solenoid, with the dash power on of course, then no start. You can clip a lead onto the left most connection and manually power it. Gotta be something going on in that breaker panel.

You don’t need relays in those positions.

Once all the relays and breakers are correct you need to make sure you are getting power to the fuel solenoid with the main power on. If you have power there and are cranking strong the engine should start. If it’s not starting then you might have lost prime and you can push the primer pump...

Look for other relays that ended up in the wrong place or not installed.

Clip lead onto the starter solenoid and tap on the main positive. Good starter will crank.

Fuel solenoid is on engine. Drivers side front area. Do you have turn signals?

Stop cranking. Leave the packs on and the dash main power switch on. Use multimeter on the fuel solenoid see if you have 24v there.

I have done it. Don’t want too much pressure. Nozzle on strong spray with regular garden hose pressure worked for me

I always thought the glow plugs were really 12 volt plugs even through the system was 24 volt the glow plug controller stepped the voltage down for the plugs. And when the box shorted out it would put 24 volts to the plugs and burn them out.

Garden hose from the engine bay side out.

Could be battery issue. Or ground related. Seen the bang bang before. You would need 24v or a pair of 12v jump packs in series.

You can have ok measured batt voltage but a lousy connection and it still wont start. Check the starter connections too. Big ground meets up there.

Maybe dash power relay is bad. Check see if any breakers tripped.

Looks like you will be getting a crash course in lmtv.

I have seen cartridges get clogged up and restrict air flow. With the new cartridge installed you want to run the pressure up and drain the tanks a bunch of times. Cycle the brake pedal a bunch. Really try to get as much moisture out of the system.

Rusty NY and Bragg trucks alot of them round out trying to take them off.