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Posts posted by mrsmackpaul
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5 hours ago, 67RModel said:
This is somewhat inaccurate. The puff limiter works off manifold pressure in the reversing valve on the intake manifold. Fuel pumps on trucks with a puff limiter system are full rack by default when the truck is stationary an parking brakes applied to aid in cold starting. Once the spring brakes are released, regulated chassis air is sent to the air cylinder on the injection pump. Once boost pressure is sufficient for full rack the boost pressure overcomes the air pressure supplied by the parking brake valve via the reversing valve that is tapped directly into the intake manifold. Boost pressure and chassis air pressure are always hydraulically "battling" each other in the reversing valve for control of the air cylinder in the injection pump. Once running, if the transmission is put into reverse and/or the low forward gear(s) the torque limiting valve is activated. It is piped from its location on the transmission up to the reversing valve (puff limiter) Once its activated it dumps the boost pressure to atmosphere that would normally build up in the system and allow full rack travel. By doing this rack travel is limited in both systems to protect the drivetrain in the low and reverse gears. Once the shift rails are moved to select a higher gear the torque limiting valve closes and allows boost pressure to build up and allow for full rack travel in the injection pump. The transmission (torque limiting valve) is part of the system but not the primary component. The torque limiting valve on the transmission is only there to protect the driveline. I would think by switching to an Allison and you could eliminate the transmission portion (torque limiting valve) of the system because the the torque converter in the Allision will provide a "cushion" to the driveline. Or just know how to use your right foot in low gear or reverse......
A far better and more accurate description than mine
But still not answering what actually happens when a Allison auto is fitted
Is the line to the transmission on a Maxitorque box just capped off
I thinking that what ever is done for a Road Ranger would be the same as for the Allision auto
Clearly I don't know but someone must be able to answer this accurately
Anyone have a air diagram that ahows what happens ?
Paul
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Progress is progress
You made headway
Paul
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ĪPuff limiter worked thru the gear box, depending on the gear you were in
Dunno what they did with auto boxes, I would be guessing something was used to operate the puff limiter when a auto was used
Is there a switch on the box the tells you what gear it's in that a solenoid to work a air valve ?
Paul
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All good Barry I did go thru the process of ordering and postage to Australia was crazy
I sent a email and you was gunna get your man to look into it
So far I haven't heard back from your shipping guy Jon
Anyway I'll wait and see what transpires
Paul
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Welcome whitemouth
Good luck with trying track the truck down
I can still read the rego number, can you track it down that way thru the transport department ?
If you could start thereand maybe find the next owner and work your way thru and find out what happened and if it's still about
Paul
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Did the Kwik lock system ever catch on and become wide spread ?
It looks a little clunky to use and the US seems to love the pintle hook while the rest of the world uses the ringfeder
Sorry RD006 I have completely trashed your thread here by taking it off topic
Paul
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Bugger me, that's cold B Mack
And Rowdy there is nothing worse for me than get cold all the way to the bone and not been able to warm up at all
Stay warm out there you northern hemisphere lot
We'll stay cool in the sothern hemisphere
Paul
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Welcome Sergey
I don't know anything about Hercules motors, what type of information are you chasing
Paul
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This good news, hopefully this can all come together
Paul
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On 6/4/2022 at 2:28 AM, Brocky said:
006, It will be hard to tell the exact year from those photos as the 200 series Brockway lasted for about 10 years with not many small changes..
Paul, American Joe Dog equals an Aussie "Jeep"
A Jo Dog set up ?
I gather this what a Jo Dog is that you all were talking about a while ago
Paul
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2 hours ago, JoeH said:
But seller would need to explain that "1 of 3" BS.
Does it even make a difference
To me it isn't bad buying at that money
It's a good start for a project and everything after that doesn't amount to a hill of beans as the saying goes
It really is a good start at a good price
All the picking apart of a listing is kinda childish to me as no one is gunna keep it original anyway
I hope who ever buys it enjoys it for what it is
Would there be many good B model cabs left in the states
They didn't so much rust apart in Australia, more broke apart with metal fatigue with our fantastic roads
Paul
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Looks to me like the radiator isnt original
Its orange the trucks yellow, this would explain the fan situation
As to the price, if it was out here you would get knocked down in the rush to buy it
I would consider it to be good buying at that price
Paul
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A good result then
Hopefully the good results keep on coming for you
Paul
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Sounds to me like the shaft on the starter needs some lube for the solenoid be able to slide the bendix and close the contact
Brushes could also be a issue
If it winds over sometimes after tapping with a hammer then the windings are fine
I would pull it out and fully apart
Clean it, remove any rust or corrosion lube the shaft and the plunger, test the windings, file or sand the contact disc amd reassemble, test and put back together
Nothing worse than been broken down on the side of the road because of a dud starter
Paul
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If we consider the air system on trucks never changed much at all over that period then that gives us a idea of how many tanks we need
As to were tanks are placed, I can't help with that on these truck's
But here is a copy of the sign/name plate of all Macks sold in Australia for many many years that was normally screwed to the inside of the passenger door on all models of Macks soldin Australia
Paul
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So I got the email telling me they are ready
I replied to the email, Barry how do I pay and organise postage to this wide brown land ?
Shoot me a email or message with some instructions and I'll make it happen my end
Paul
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Thats a fantastic out come I feel
Even though Mack didn't offer much help it must feel good to have it fixed
It really is a great feeling to achieve this type of result
Well done
Paul
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Gudday Ron and welcome
I am of no use at all on these, best advise for maintenance is to drive it
Nothing wrecks a vehicle quicker than not driving it
Paul
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I can't see why not
It should work, just have it ticking over nice and gentle, wouldn't leave it on there for hours on end but I reckon if it works then why not
I guess if it had a limited slip diff and abs brakes or traction control it might be different
Paul
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Remember if you blokes are gunna cut into a diesel tank to clean them out to fully wash it out with petrol first
Diesel seeps into the seams and steel and evaporates out as it gets heat from cutting and welding etc
This makes the tank full of fumes and explosive again
Dangle a air hose in running freely to force any fumes out
But wash out with petrol first is a must
But you all aren't talking about cutting a hole to clean a tank out so disregard my comments, my comment is just encase you decide to fairly get stuck in
Happy days everyone
Paul
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Bugger me, this is no good at all
I'm sure you'll find a buyer quick enough, sounds like a nice little run about
Paul
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2 hours ago, 67RModel said:
Don’t end up like Christopher McCandless in that thing…..although his bus was an International KB5
I had no idea who this was, had to Google him
I like food to much to starve to death like this bloke
Paul
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I reckon this would make quite the cool camper for a month or two
Paul
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Outhouse would be called a dunny here
Paul
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74 Mack Rmodel Project
in Antique and Classic Mack Trucks General Discussion
Posted
This is some serious action going on
A big job but should be worth it
Paul