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Thread: MRAP parts identification

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    From what I'm seeing the brakes on the Caiman are the Meritor EX225 disc setup. Meritor uses these on road and off road applications. The above post by me is a National Highway safety bulletin. Picks in the bulletin show the same issue, I will be doing some more research on it to verify, but the timeframe noted in bulletin goes along with the timeframe BAE did the upfit with the new chassis and powertrain using the Cat C-9 Engine. It states on Meritor Defense website that the Pro-tec series 50 Axle setup uses Meritor Wabco disc brakes standard and that goes along with the EX 225 setup. I will share after I get my final determination.

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    WIN_20170716_163412.jpgWIN_20170716_163424.jpgThis is some more pictures of ours. I think I'm on the right track about brakes but the brake chamber on axle I'm having issue with is different. I think I seen a post with a part number somewhere else, so I'm gonna find that and look that up. Then I think I will try Meritor again with numbers I pulled off axle to see if they can help me any further with a rotor and pad part #. But I did speak with Motor Pool guys at Local Armory and they say the moisture is the problem. They have found same issue on others. Replace brake chambers and pads and any messed up rotors and keep system dry. They did like my idea of installing a remote drain setup and another dryer system since there is so much heat in the area where factory drier is.

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    We stock many MRAP parts

    see this link https://www.easternsurplus.net/PartsList/1207/MRAP

    if you have the NSN for the parts you need we can assist further

    We also have an MRAP Caiman II chassis for sale- New issue

    Dave
    www.easternsurplus.net

    Eastern Surplus & Equipment Company
    www.easternsurplus.net
    Toll Free: 1-855-332-0500
    dave@easternsurplus.net

    Click here to check out our E-Brochure

    Government Contractor ID # 5KKZ9

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    I spoke to someone at your place on phone the other day. I did get the model # and serial # off the axle housing. Took some #s off caliper also. I will be sending you all the copies of documentation and parts and repair along with maintenance procedures I have. There is also some class stuff and powerpoints in there. I told whomever I talked to that I'm happy to share. I know a lot about this machine from all the work I did to this one.

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    The damage shown in the technical bulletin you provided is exactly what I have seen on 3 other Caiman IIs. The rotor shows heat discoloration and has galled residue from the pads all over it.

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    What's the caliper number?

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    Thanks to a great guy at Meritor I was able to get part#'s for everything finally. I couldn't get a direct answer but he did say I was on right track on the NHTSA warning.
    The part #'s are Rotor 23123770002, Pads KIT2252L2DA, Chamber D303276X24 & D293276X24 (depends on side), Seal A1205V2830 and if ya need a new hub 0516153001.
    These are available parts that the local meritor dealer can place an order for and ship to you. And yes this will fix the sticky brake situation as pointed out by NHTSA Bulletin. But I still recommend keeping drier serviced and fresh rebuild as these trucks were sitting after BAE did retrofit refurb. I still will be adding another drier like I use on the Kenworth and Peterbuilt trucks.

    I do hope this helps everyone and feel free to hit me up if you need any further help with your Caiman.

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    Well here's another update. Caliper part #'s left EX225L209DA000 , right EX225L210DA000

    Also you have to test the hold off pressure on the supply side. I'm working on getting the required pressure on the chamber. It's noted that BAE had a problem and Meritor was working with them on fixing it but the govt stopped the MRAP program and the plant closed. The problem was showing to possibly be a relay valve and the Bendix R-7 valve might be the fix, but I will update as I proceed forward on the truck. In the meantime you must operate truck only with full air pressure on system.

    there may be some problems with chambers that goes with the NHTSA bulletin but unfortunately since it's not an on highway truck we aren't covered under recall. We all must purchase our parts and fix the units ourselves. But the new parts fix the gremlins and you should not see it in the future. I recommend replacing all ten brake chambers on ten rear, I know it's a high cost but to insure that another doesn't fail and burn up the caliper and brakes.

    I do do hope all of you find this useful and a big thank you to the guys that finally were able to help me at Meritor. These guys understood it's not secret what I'm needing, that this is an offroad assembly they sell to other manufactures.

    The Technical guys at Meritor are going to email me their information and help me through this process so we all can fix the issue.
    Last edited by Oklahomadeputy; 07-18-2017 at 13:56.

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