theakerstwo

That is a pressure protection valve.

The word Thermodyne can cover many different model engines so yes and no as for as being same block.

As for as using soap and water in a spray bottle i years ago used propane leak detector fluid.It was sold at any propane dealer and the good thing about it was you could spray just a small amount on the suspected leak and for a hour later it would be making large bubbles.

Sorry to hear this Tommy

About ever 6 months i have to clean my low coolant sensor or it will think its low on coolant.I use steel wool and wipe the tip clean and all is well.

On the truck i have which is a VMAC 2 it for two years would miss or mis fire or sound like a back fire maybe on one cylinder and shake the truck good.I never saw a light come or a code come up.I would do this maybe once a week but about two weeks ago my voltmeter begine to drop voltage.I put a alternator on from one of the other truck but still low voltage.Then i started to check the alt wires and the ground below the starter with the 5/8 bolt on the wires to the block look a bit loose so i remove bolt and cleaned ever thing and now the voltage is up and also no mis fire sound.That been three weeks ago so i think the engine harness grounds to the block there.

Rob if you put a turbo on a 673 one thing you need to do is remover the fuel pump and replace the syncrovance and install a direct drive on the pump and set timing to 28.Mack sure the air cleaner is larger and there is a adapter that goees in between the compressor and block for the turbo return oil to go in.Both of the parts may be hard to find.The set the rack out about two rounds.

To use plastic gauge make sure and jack the weight of the crank up or support the weight of the crank some way or you will get a false reading on the mains.This is not uncommon.

Yes the lift pump has to hold the prime and on some pumps the check valve in the return port of the pump will hold the prime or help but like the CH i am running it has no check valve in the return but has a orfice fitting so go figure.

I hate to hear this and will pray for you.

I did not get it

So many things it could be

I had a crack drum making a noise a few months ago.

Joey i am sorry to hear about the illness but hope all goes well with you and thanks for keeping us updated.

I run a mack 18 speed and i wish it was a eaton because the eaton shifts better and is cheaper to work on.

What ever pump you use make sure the gear teeth count is same as old pump

I have seen the steer axle applied by the trailer hand valve connected inline by a two way check valve which is easy to find.This way your steer axle brakes can be applied normal or by hand. A double shuttle check valve would be the correct term for the valve

I dont think i need that shot after all.

Just like Mike stated.I was sent one night down at the edge of Ark. to pull a rad from a B61 all by my self.And i did.It was the one that you unbolt the head light panel from the fender to get the shell off.The problem with this is it was one of five trucks Texaco oil owned but it was older than the others.When i got the rad out it looked as some said been in a wreck.The service manager had not seen one of these and being a young guy he takes it out on me for tearing the front up.He say he didnt want me to be the one who puts it back in.I tell him good cause I hurt my back taken it out He came and made things good with me a few days later after two other guys go down there in the day light hours and installed the repaired one.Best i remember it was pumping gas in a tank when the rad started to leak or they would have got a wrecker.This was in the mid 60s so they did thing different them.I went up on the turn pike one night and changed a water pump on a H model with the cab jack messed up.I got it half way up and no way to block it up.Soild ice on the road but i did a lot of the work under the engine laying on ice. This is what you have to do when your working for a want to be forman

On top of that our dealer and dont blame them uses alot of after market parts.In most cases you have to ask for what brand you want.

Here a mack cyl kit for a gray engine from mack is almost 800.00 each.I paid 365.00 from PAI.brgs are much cheaper from PAI also.

Also look at the check valve or over flow valve or pressure regulator or what ever its called now and if its the one with a spring pull and make sure spring is not broken.This is the one on the fuel return on the side of the pump.Remember some of them has no spring and plunger but is a fixed orfice

My truck about 10 years ago was losing power and time i got it home it was ready to die so i put the pressure gauge on the fuel and had non.I found a big bug that came up the draw pipe and hose from tank and was hung up in the inlet fitting on the primary filter.

Call manders diesel also some one on here posted back some time ago that could or had hub converstion and stated he had many spoke hubs.

If the injectors was fed oil from the cam brg then that could be the problem but the injectors are getting their oil from a line that goes in the top of the rocker box. and if that was losing that much pressure them at idle the stc would not be advancing the timing because it depends on that supply from the out side line.Could be a bad cam brg but if its spun the brg most of the time the paint will be burnt on the outside of the block next to the cam brg.I am no expert but did put in 39 years working trucks.