609albert

post a photo , their are after market filters that provide better protection than that mesh type 

NAPA had them for my Mack 10 years ago , tip go to the oldest counter guy. Also you may want to change over to Petronics  ,no points needed ,Petronics is electronic ,have to order if you have positive ground battery connections

Finally fixed and  G from Iowa was correct  it was the Alternator that was bad and not large enough to for the load ,the new Alternator is 105 amp ,rectifitor  and voltage regulator removed . the new alternator  had it added on to the back end. had to have a machine shop machine a double pulley to match belts.

the L & B model Macks with the Hall Scott engines where 11'' longer in the front section than 707 c i Macks 

I will get a small piece of felt to put in the cup and just add motor oil 

50's Mack 707 distributor shaft has a spring cover cap on side at bottom shaft their a inter opening (not a grease fitting) the question is what type of oil to use to lube, their is no mention in the service manuals that I have, thanks in advance

ok ,we know that the pulley alinement  is most important , thank you for you wealth of tech advise 

the generator,rectifier ,and voltage regulator all look like the pictures

the generarator has 3 studs on top that are wired to rectifier , and the Mack is positive ground   

Yes ,It has a Generator, rectifier and voltage regulator mounted on inside of firewall (in cab)

yes batteries are new , it has the large disconnect switch  and rectifier 

 1953  LS 85 Mack,has new 12 volt batteries ,it is not keeping the batteries charged as it should currently has a generator and a rectifier , we are thinking to change over to an alternator, the question is what or how do we address the rectifier connections or are we going in the wrong direction  

nice project truck & at 72 on way home when purchased. I like your pole building ,I would bet it is a Morton and I wish I had the same truss arrangement  on the 2 I built at my son's property . I have a 54 LS85 Mack fire pumper in it

Nice tractor,so I guess it is not diesel , what about the tiller section ? 

we put  Daytons on my 54 Mack with 20'' spokes and 1100 x22.5 radials (chinese) what a difference . did all 6 wheels ,no more split rims ,

Just a suggestion after you get the carb straightened out is change the points to electronics in the distributors and make sure the coils are good . If you have positive ground the Petronic (brand name) have to be for positive ground also

the spring melt in April in Allentown PA .  from 1940 to 1954 their are 3 different types I believe

James I have been down the road your on ,I have a 1954 Mack LS85 open cab , had a off frame started in 2009 took 2 years and lots of $$$$ plus . will never get money back out of it but didn't care. got many awards ,plaques, trophy's etc. , At musters I put up signs "Judges please Do Not Judge " .  

  My current project is my fire company's 1934 Seagrave Suburbanite ,started as group project but just me now ,have a budget (small) trying to do most of work inhouse cleanup grease little rust etc. .will have to repower  ,hydra brakes, wiring ,fuel system , lighting, just to make presentable , slow process but that's my goal and will send out to repower .

 Posted this inquire before looking again for  B & C rubber pedal pads for 50's era L models , tried Watts, Cal Little, John Chambers no luck . thanks

Hey that is Awesome! a great idea for some of the old items I have

posting  photos will spark more interest and we can see what you have

could it have been a repower?

he is still checking all suggestions out with truck

 My buddies 50 Mack LS 85 fire pumper ,everything was ok then truck needed to be jumped to start , park truck , no battery to start jump again ,  has 2 12 volt batteries, where to trouble shoot first ,batteries are newer. is it the voltage regulator ,generator/alternator ,rectifier , all wiring looks good .don't know if ammeter is good yet

look in the doghouse( engine compartment), under the seats , pump panel interior , compartments on fire body