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Topic: Meritor brake caliper bushings (Read 453 times) previous topic - next topic

Meritor brake caliper bushings

Has any one had to replace the meritor air caliper bushings? I have quite a bit of play when the emergency brake is released on the caliper pins. I see that meritor has a bushing rebuild kit but I would think the would last a lot longer than 135k on the u320 coach. Just curious to see if this has been a common service. It is quite a big job.

Re: Meritor brake caliper bushings

Reply #1 –
If you do a search for caliper bushings there are previous posts
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: Meritor brake caliper bushings

Reply #2 –
Not sure what you mean by play,the pads slide on the pins,are the pads loose or have play,maybe the pins are worn and just need replacement,Meritor probably has a manual on replacing bushings,helped rebuild rear calipers a couple of years ago and the bushings were ok.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Meritor brake caliper bushings

Reply #3 –
When I last checked my pins there was some play in the right front wheel caliper bushings. Not serious enough to replace at the time as I didn't have the parts on hand. I now have 8 new pins and 16 new bushings in stock so next time I check brakes I will replace what is necessary. The bushings are not going to be that hard to replace if you have the tools.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Meritor brake caliper bushings

Reply #4 –
Here is a copy of the 4M brake book that is a must read. (There is a copy somewhere here on the Forum but can't link to it today) If you look at page 10 it will give you the +/- tolerances and where to measure.
 https://graphicvillage.org/meritor/mm4m.pdf

Yes I have replaced some but at that mileage I would doubt yours are bad.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Meritor brake caliper bushings

Reply #5 –
Quote from: Pamela & Mike –
Here is a copy of the 4M brake book that is a must read. (There is a copy somewhere here on the Forum but can't link to it today) If you look at page 10 it will give you the +/- tolerances and where to measure.
 https://graphicvillage.org/meritor/mm4m.pdf

Yes I have replaced some but at that mileage I would doubt yours are bad.

Mike
Max ID 1.120" New ID 1.012". This leaves a wear tolerance to .108" this is a lot IMO. That's over a 1/10 inch wear not to mention any wear on the pins although doubtful.  At least you wouldnt have to worry about them dragging at that wear point.