R.E.D

We just take spring pack and have the shop press the bushings in..3 spring should be enough for a tandem truck grossing less than 50k pounds I believe.we use 4 springs ,since the trucks are tri axles and run gross around 55k to 57k pounds .

I'm afraid that 1/2 drive won't be enough..u bolts are one time use since they stretch and the nuts on them pretty much weld themselves in with rust and road grime over time..we use a torch or cut off whel to cut them. You can take them to your local springs shop or big truck parts store to be measured..while your there ,pick up a spring center bolt.this is the bolt that keeps the whole spring pack together..it's doweled at the bottom to center springs pack into the axle..we use a one inch drive impact with short anvil to tighten the u bolts.. tighten evenly and don't forget to put back the wedge...that's what sets your caster .let us know. Red Ps: there's a channel on YouTube called "semi working"..he does this for a living and has a videos on macks too.good luck.

Sir ,what you are describing in my opinion are the bushings as you have suggested.our 2 mack chs have this problem.since they were over the road and since converted to dump truck the rubber bushings don't hold up.. usually we can get a year out of them.they are not greasable ,either in the front or the back at the spring hanger.They noise is most easily heard when turning loaded.see if upgraded polyurethane bushings are available in your area.. polyurethane usually last longer.. picture above from onyx is from an axle that has threaded pins and are greasable...and a later year model to yours ..indicated by the 3 holes on the pin,which I believe is a Volvo design. Red.

Ezra , aka ezrider359 did an amazing job on that old Pete. Phillip from the flannel Phillip YT channel also did it to his old kw w900.but fortunately yours looks good 👍 and can be brought back with blasting, painting and a little bit of tlc. Red

Merry Christmas!

We are going to need a bit more detail.Year and model engine?how long is white smoke lasting?vmac 2 with electronic injection pumps smoked on start up until oil pressure got to the econovance, which usually took a few seconds.lets us know

I thought I would give everyone an update on how the truck is progressing. Being a quint axle dump truck grossing 72000lbs , I was averaging 4.3 mpg with the s400 turbo and higher flow exhaust manifold.then replaced two unit pumps that were bad, mpg went up to 4.70 mpg, finally I installed the 427/460 injectors and mpg went up to around 5mpg.These numbers have been very consistent for almost a month now..all that is left is 427hp update, I already have a efile ready to go with mack, but since there is so much work now, I can't be down one truck.Truck definitely has more power and requires less downshift ,but then I again power wasn't my main goal..I'm after the mpg, that's what's putting money back in my pocket , come on!! Thanks R.E.D You all have a blessed Sunday.

Exhaust valve push rod has a spring.needs to be compressed when taking measurement and when adjusting as well.

Man that's a double whammy..must be one of the last non etech engines of 98 and one of the last mechanicals of that same year.😅

Here's my set up..cap fits inside intercooler boot.put clamp back on ,not too tight , then apply shop air, don't put too much pressure as you could damage your intercooler, 20psi should suffice.let us know. Red Ps: I couldn't find my 1/4 npt tap so I just heated the fitting with a torch and made the threads that way.then put a nut in the inside for safe measure.😅

It will build some pressure but engine fan will blow the bubbles off.the way I test the intercooler is by capping both sides off with plumbing pvc caps..one of the caps drilled and tapped for 1/4 inch npt fitting..then apply some pressure and soapy water.

If it is the incorrect turbo that someone put on prior to you owning the truck, then most likely would explain the lag

That's a s400 turbo, I believe that turbo was for 400hp+ engines .but someone here can check it for sure if you provide the last six of vin.

Does the lightning bolt come on when the key is put in the on position ,then turns off after a few seconds? The reason I'm asking is because the bulb could be burnt out? Have you checked for boost leaks? They can be heard easier with both windows down going down the road.

I believe that truck should have a s300 turbo. Have you replaced fuel filters ?any fault codes ? lightning ⚡ bolt on?

Here are some cross references for posterity. PAI ECV-8541 to MACK 700GC120 PAI EGA-0461 to MACK 56AX393

Yes.indeed found the parts online and all can be had for around 200$ .. haven't checked with mack.

Thank you and all who commented. Red

Last six are 014602 Cv713 2004

Thanks .. Don't forget old macktechnician.😅

Thank you all for your support and prompt advice.

So is this mount I'm inquiring about a factory option?the pic shows an ami or ai motor ?was this in case people decided to run other coolants besides extended life coolant? Red

mack dealership mark ups are legendary...the other day I went in to get a filters for an oil change.i was feeling lazy so I decided to buy the oil there as well (rotella t4 is what I always use) .I knew there would be a price mark up but not as high as I payed.i usually pay around 13$ to 14$ a Gallon at Walmart or home Depot. when I saw my invoice from mack they charged 26$ a gallon..THATS CRAZY...I was already down the road a bit , yet I had the slight hesitation of turning my pick up around and returning them..I could understand a part can be marked up because it's dealership only or special order or what not..but regular engine oil that can be had anywhere? that's just bonkers what they expect people to pay.

All 3 or 4 mack dealerships Houston are Vanguard trucks.same employees who swap locations all the time.they caught on to people asking for part numbers and just going somewhere else to buy pai

What I'm really hoping to accomplish is to catch any debris or precipitated old coolant that might be in the system.I have owned the truck for 3 years yet I'm not sure how it was treated by the previous owner.