mrsmackpaul

12 hours ago, BOBWhite said:

Are these dry sleeve or wet sleeve motors? And if they do pop out why could't you just reseal it and pop them back in?  You can check the condition of the cylinders and check for cavitation if they're out. 

Also do Mack's have problems with dropping or sinking liners like Cats do? I'd imagine sleeve shims would not be easy to find for one of these. 

If someone is putting a lot of force on a crank to move a seized engine then pushing as sleeve out is well with in a possibility 

Then as Joey suggested these are a press fit or freeze and get back 

This is all gunna be a challenge with a pistion still stuck in a sleeve 

Anyway thats how I would deal with it 

Paul

Very good, please feel free to share any photos or memories

Paul 

1 hour ago, Hans Remmers said:

Looks like the box was run with bolts loose and then the inners broke off in the housing or pulled out

I reckon your right, this isnt as easy to notice if you dont know we're to look

The bolts towards the center of the camel back I doubt anyone can easily see from walking around doing a pre trip inspection 

So depending on how the conversation went with mechanic I can sort of understand how this could all unfold quite easily 

Gotta remember the mechanic can only goes on what is described to him and the driver can only describe as best as they can 

I dunno we need to try to not be to critical after the event

Bloody lucky everthing survived the ass puckering adventure at 65 MPH I reckon, I know I would of had white knuckles pulling the truck up 

Anyway I'm sure all involved are well on the way to getting things sorted now

C4Ed I'm judge you the truck or anything else just chucking some thoughts about

A lot of the people on here are really experienced in all facets of Macks so dont judge them to hard as they can only call it like they see it

Paul

Well this is good news, now that's gumna sound strange

But let me explain, you stopped forcing it before you went to far and broke something 

Mouse piss etc should be of concern, or at least it would be to me, must be some valves open either fully or partly 

How did these mice find their way into your motor ?

Paul

Bananas in the gear box, mate we have all the answers at "Dodgy bros auto repair"

This is the gear that is reported as the go to deglazer used car sales man instant rebuld kit in jar bombdiggitdoo kit

This will save you bucket loads on those over charging money hungry pescky mechanics 🤣🤣

Paul

That would of added some excitement to the day 

Gotta ask the question, did you get under and have a look when you first noticed it tracking out wide ?

Thinking it might of had a broken or missing bolt that could of easily been noticed 

And Mack Camel backs do track a fair bit 

Paul

I would be guessing you blokes are right about the rolled O ring

That been said the motor was probably rebuilt by a normal bloke like most of us and didn't even realise

I doubt commercial truck owner would of rebuilt this for commercial use

So we shouldn't be to hard on who ever rebuilt it, I'm thinking it was done with the best of intentions 

I wonder if the motor sitting  for so long got rust in a groove of the twisted O ring and the rust cut thru the O ring with heating and cooling 

If this had been im continual use I wonder if it would of happened at all ?

Paul

Silverfrost paint was common to find on head gaskets in Australia maybe 30 years ago or more but havent seen anyone use it for a real long time now

I have used copper spray, only if the head is in a really difficult spot like a COE truck without a tilt cab

Paul 

6 hours ago, mowerman said:

Paul why is your truck on a drop deck??????  Bob 

I was going to go to a truckshow, yes it shocks me as well, so put the truck on the trailer as it is easier for me to wash underneath it 

Well I washed away and it has rained and rained and rained some more

This is all heavy self mulching clay here and adter 1/4 inch of rain you.can move so the truck sits 

I have done (hopefully) sone improvements to the sir start as it is fed direct off the wet tank and all the dirtest air goes straight from the wet tank thru the valves into the airstart air tank

This causes anyoying leaks as crap gets under valves 

Anyway dont wanna corrupt Vlads thread here to much

Oh and another 20 mm (3/4 inch) over night, thats helped no end

Note I did shift Mrs Mack since the last photo

The bull bar is off as I was gunna polish it up shinier than my head bald head on a hot day, and do some repairs to it as well

Sorry Vlad 

Paul

Welcome and thankyou for your information 

Please feel free to share any knowledge on Macks from your part of the world 

Paul 

refractive lense

never heard of such things, as long as they work I guess and sounds like they do 

Paul

50 minutes ago, Craig N said:

 I think it’d be foolish on my part to not take the heads off at this point.  

 

I would agree, you can see there's issues, dont want to make it worse

Gaskets and the like are cheap

Paul 

Miss Molly the border collie is waiting for me to get my act together 

Paul

There's some good reasons to not force the engine to hard mentioned here

My thoughts are fairly similar, if the truck is home and you are capable of mechanical work to me it's a no brainer, pull the heads and have a look 

Because without doing that you have no idea what's stuck, everyone here is assuming pistons, it really could be anything and the chance of causing a major issue is pretty high and could be easily prevented by pulling the heads and having a good look 

Not only that it gives you the chance to clean 50 years or  more of crap off everything and not have it pumped thru the motor 

Anyway thats just thoughts 

Paul

8 hours ago, Craig N said:

Anyone think I should take apart the injectors?  I can get that big nut off the top then it looks like a flat for an open end wrench in there with a  set screw of some sort at the top. Is it worth it? Should I fiddle with them or leave them be?

No definitely not

Drop the tail shaft, put in gear and use a porta on the yoke of the tail shaft to move the motor

Pry bar is the go, lots of possom piss as Hayseed suggests

Be careful with heat as you might crack the head or stuff the injector

People sometimes screw a slide hammer into the top of the injector, but this normally just breaks a really stuck injector 

Paul 

It's come up well Vlad 

I find most metric fittings and air lines etc work well enough with imperial, just use some thread sealant 

Yes projects have a habit of blowing out in the time department for me, was going to go to a truck show a few months ago and turned my Mack around and parked her on my low loader to give her a bath

Well it hasnt stopped raing since so it is stuck high and dry 

Paul

Well done 

Anyone that buys these old buckets of bolts is paying to much

I have no idea about the price in the US but 5grand for a B model in Australia would be a steel

Paul 

Seed these are Trev Jones and the Princess took some as well so credit to both of them 

Paul

Well I'm gunna be keeping a eye out for some piccies 

Paul

Fill the filters and wind it over

If it wont prime pull the lift pump apart it mighr be full of gunk

It should prime up pretty quick with out anything special 

If you have the lift pump apart pack it with grease so it sucks right away 

Paul

Mate, how long is a bit of string ?

Honestly you are the only person that can make that call

Probably not much of a answer your chasing but the only one any of us can honestly give

Paul