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Bpfd982

1983 Mack brakes

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Hi guys, on our department we have a 1983 Mack for our pumper with disc air brakes, none of us have much experience with this type of setup and they need to be adjusted, so looking for some info and pointers on where to start, thanks Joe 

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Kelsey- Hayes Disc brakes? Pray you never need parts..............

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do you have the books that came with the truck?, if so check out the brake systems section and see if you have instructions.  then if you still have questions once we can identify positively what brand you have , I'm sure one of us could help you!

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Try thinkn outside the square

Disc brakes spose to be easier

so me guess n here ................. hit reverse n hit the brakes 

or give the brake pedal a full on application with max PSI

 

Jist a Wild Ass Guess

 

But

WaddaEyeKno

 

cya

§wishy

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What are the brakes doing or not doing?

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No books for the truck around the fire hall anymore wishful thinking,  the inside pads are touching the inside of the rotor when applied but the outsides are far from touching 

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Disc brake calipers need to "float" so they self center on the rotor.  Sounds like the caliper has seized to the caliper bracket.  Depending on the brand of your system the slide can be lubricated using caliper grease or anti seize compound.  Bendix recommends white grease on their guide pins.

http://www.cbsparts.ca/admin/bulletins/SD-23-7541_US_003 rfs.pdf

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what j hancock said.... based on your info I am leaning toward them just needing a minor repair.

got to ask a dumb question... who has been inspecting/servicing the brakes for the last 30 years? or did you just get it?

low mileage vehicles such as fire trucks need a calendar based inspection program added to the normal mileage based items to cover corrosion and like problems.

can you take a picture of the caliper so we can determine the brand and era, there may be other issues to consider if the adjusters are odd ball....

BC Mack

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I'll swing up there hopefully today and snap some pictures,  we've had the truck for quiet sometime, but that's not saying it gets the proper maintenance, me and another guy have taken it on to make sure it continually lasts as long as we need it to, both experienced with air brake systems, just this type is new to both of us, thanks for the input so far I'll post some pics of what they are asap 

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