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Hello all,

I am restoring a 1975 F Model Daycab and having a headache with parts availability for the front 4 inch brake shoes.  The truck has 16.5 inch Dayton Rims and the original brake shoes were the old "P-style" shoes that have a ring at one end.  Watts Mack said the shoes are no longer available from Mack.  Aftermarket Meritor Part Number is 4549P.  I was able to obtain 3 shoes from Haladex but it appears that the 4 inch linings needed to remanufacture the shoes are out of production and not available anymore.  Obviously, I need 4 shoes to complete the job.  I do have 1 newly remanufactured Q style shoe with the open hook at the end, Part Number 4549Q but it takes a different anchor pin and I am worried about mixing different shoes on the same axle.  The 4'' Q style shoes also seem to be out of production.

 

I need to get this truck back on the road so I can continue the restoration.  Has anyone encountered this issue or have any of these old P style shoes that I can buy?  Any technical expertise in this area on whether it is okay to mix the P style and Q style on the same axle?

 

Appreciate any help!

Mike

Screenshot 2025-06-01 212638.jpg

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I used to have some pin type shoes in 4" but when I looked in my core pile, all I could find were 15x4Q's. I much prefer the pin shoes on the narrow  steer brakes. I forgot all mine were the more common 15 x 4

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