1926 Mack AC help

[Great White]

Hello all:

 

  We have a chance to acquire a well used Mack AC.  It is rough but the engine is not stuck. It last ran in 1980. One rear tire needs new rubber. There are data plates on the seat riser that are not readable.  How can we tell what capacity it has and how much it might weigh?  Where can we get more information to see if this is a good fit for our vintage fleet before we pull the trigger? I believe that it hauled logs back in the day and has some local history.  Any thoughts would be greatly appreciated! 

 

  

[cruiseliner64]

I dont know but i'd buy it anyway...your bound to get some numbers off the chassis or engine/gearbox that the guys could trace.once in a lifetime chance.im sure someone who knows/has an AC could tell you where to look.best of luck with it.

Paul

[Brocky]

 

41 minutes ago, cruiseliner64 said:

I dont know but i'd buy it anyway...your bound to get some numbers off the chassis or engine/gearbox that the guys could trace.once in a lifetime chance.im sure someone who knows/has an AC could tell you where to look.best of luck with it.

Paul

Contact Gary Mahan at the Mahan foundation in Basking Ridge NJ.  He and his people probably have the most information on AC Macks in the country. At least they can tell you where to look for more numbers. Once you have a serial number, then contact the Mack Museum in Allentown PA and they can likely send you more information about who originally bought it.

[Truckcrazy]

The serial number should be stamped on the top of the frame rail at the front when you lift the hood.  It’s about 7 numbers long. Need truck. You should buy it. 

[mackdaddy]

On the drivers side front top of frame. divide the first 2 numbers by 2 and that is the ton rating EX 15 is 7.5 ton rated

[pdgx]

Based on the pic with the fender, it’s earlier than a 26. 26’s have smooth rounded fenders. 
Does the engine have a head on it or is it a jug head ? 4 cylinder or 6 ?

Weight in that condition would be 8-9k looking at what is missing. The chassis from the factory would have been around 9+ depending on what wheels/tires it had on it.

As suggested before, get the SN from the top of the left frame right at the front. It may be a bit worn as the hood sits right on it. 

Then contact the Mack museum using this online form

https://www.macktruckshistoricalmuseum.org/contact-us/

They can tell you everything about that chassis from build sheet to who it was initially sold to.  

They can also provide you with just about any part print you need to restore it  

Having restored one starting about that condition, it’s doable at a reasonable cost if the engine is free, and you have most major components. Sheet metal components can be made.
But you definitely have some work ahead of you.

[Great White]

Many thanks for the information. We bought it.  It is serial # 7310317 and has a 4 banger with jugs. It is not stuck.  I suspect that it was used to haul logs in the Gorge. It supposedly ran in the 1980's and was very tired. We sent the serial # to the Mack museum. Oddly enough we found a tool bag with tools with Mack script on them some years past with a pile of antique Caterpillar parts. It looks to be mostly there but has a later cast Stromberg carburetor.  The manifold looks great. 

We also have a 1919 White model 45 five ton rescued from the scrapper. It was used as a water truck in Seattle, Wash.  No idea why a water truck would ever be needed in soggy Seattle.  It is very rusty but a brass tag on the block showed an overhaul in 1932. It has aluminum pistons and almost no wear on the cylinders. It looks dreadful but runs well.    We are pleased to see interest and support to keep these old dogs alive.

[steve s.]

Quote

We also have a 1919 White model 45 five ton rescued from the scrapper. It was used as a water truck in Seattle, Wash.  No idea why a water truck would ever be needed in soggy Seattle.

Of course I have no idea about your White, but we often forget that in the very early days of trucking the horse was still widely used. Many trucks were equipped with water tanks and used to "flush" the horse's manure off the streets in larger towns and cities. Good luck with your new Mack. It looks like you should be able to get it running without too much trouble.

[pdgx]

That SN does say the chassis is a early ‘26, but being a 4 cyl Jughead indicates it should be earlier, so just keep that in mind.

The engine looks pretty complete, so you should not have a problem getting it going if the mag has spark. 

Stuck valves can be a problem, but easily accessed from the top and side if you don’t have good compression.

 

 

 

[Great White]

Many thanks for the information.  We sent the serial # to the Mack Museum in Allentown and are waiting on a reply. Hopefully it can be hauled by a towing company with a roll back truck.  It ran in a parade in the 1980's but was very tired and had low compression according to the previous owner. The American Bosch DU4 magneto is a welcome sight. We have rebuilt many of them. Some survive in working condition even after 100+ years of service. It will be interesting to see who it was sold to. There was a trucking firm 25 miles west that had a fleet of Macks and Whites back in the day and/or it may have hauled logs.