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We have been busier than a one legged man in an a$$ kicking contest....So can anybody tell us how thick are the brake shoes when new? Im asking because we have been told by previous owners that this truck has very small mileage but nobody can prove that.When we stripped the brakes the shoes are a half inch thick on all brake sets.So what you may ask,well all the brake shoes are date stamped 1982, the year the truck rolled off the line.....In fact the rad,intercooler,spring hangers,alternator,diffs,water pump,thermostat houseing,wheels,injector pump,springs and Dayton spokes are all stamped with dates in 1982.....just how original is this truck????

Paul

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Do you have pics of the shoes? Modern shoes are nearly 25 mm thick in the middle and thinner on the ends. Mabey 12mm. Im guessing, but i bet im close.. what is the shoe number? 4515 or 4707QP ?? On the drives.? If so, them im about right.. 

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Joey,shoe number is 3222 G 973.I dont have pictures but I think my son has.The shoes are 13mm in the middle a little less at the ends.We are just trying to get an idea of the Mileage...If these are the shoes it came with how worn they are might give us a clue to the mileage The clock says 154,345 Km which is around 98,000 miles.The hours clock shows 2,234.We are just looking to somehow prove the mileage...

Paul

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Yeah,the previous owners swear she done very little work but we are trying to prove it.On average how many miles would a set of shoes last? I know lots of things vary brake wear but if these are the orignal shoes and are say half worn then maybe we could get an idea if the click is right...  It's just a hunch....

Paul

37 minutes ago, Joey Mack said:

I have no way of knowing. I never paid attention to mileage on shoes.  Using the engine brakes and gearing down help save the shoes. 

driver in the seat makes a major difference also. terrain being run ; over road VS construction operation . many variables

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29 minutes ago, mowerman said:


from what I remember,  brand new shoes or  linings are about a half inch when brand new

1/2 on tapered block would be on cam side; 3/4 in middle / 3/8th +- on anchor side.

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2 hours ago, Vladislav said:

Big job! Keep on going!

I'm pretty sure the result will offset the efforts. And as you do it it will be seen very soon on my mind:thumb:

Of the brake shoes and drums my way would be keeping them in place and forgetting about them for at least 50,000 upcoming kilometers. You will doubtly make that much driving to shows and other events for fun. So those shoes have very good chances to serve for the rest of the truck's life. Maybe even more:)

If all them date coded things you said are correct, i don,t think i have ever heard of a truck with so many original factory parts.   terry:MackLogo:

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20 hours ago, fjh said:

I would like to see a picture of your shoes I am curious because Mack at one time made their own stuff!also factory brake lining is historically hard ! It eats drums for breakfast!my bet is your drums will be over the wear limit!

also the afore mentioned driver can make all the difference! In my final years at the truck shop I I mainly did truck inspections I had fleet customer that brought trucks to the shop he had bought three new western star trucks he had one driver that used I assume his trailer brakes all the time! The paint was still on the drums after three years and 200000 kms so they are out there!Just few and far between!

know all about those Mack brake shoes ! 3/8th brass bolts . no easy way to remove old blocks. large screw drivers =even 3/8 drive ratchet with flat screw driver end P I A. smash the block and hold bolts with vise grips. then the cleaning-- grinder/ file and straight edge all before paint. the Q brake shoes factory reline made life easier.

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3 hours ago, mechohaulic said:

know all about those Mack brake shoes ! 3/8th brass bolts . no easy way to remove old blocks. large screw drivers =even 3/8 drive ratchet with flat screw driver end P I A. smash the block and hold bolts with vise grips. then the cleaning-- grinder/ file and straight edge all before paint. the Q brake shoes factory reline made life easier.

The bolts are usually brass!

quick and easy way is with a long chisel and a hammer!knock the nuts off!

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