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  1. #1
    Join Date
    Mar 2019
    Posts
    4

    Unhappy Bowman OM636 Heat Exchanger

    Hi,
    My Heat exchanger has developed a corrosive hole which I doubt can be repaired.
    Seeking replacement.
    Bowman Heat exchanger for Mercedes OM636
    Thanks

  2. #2
    Join Date
    Jun 2001
    Location
    uk
    Posts
    2,260

    Default Re: Bowman OM636 Heat Exchanger

    Depending where the hole is , the standard way to repair is to solder close one of the tubes, both ends.
    Serck
    https://serckheatexchange.co.uk/

    might be able to help.
    Last edited by david_bagshaw; 07-03-19 at 19:04. Reason: wrong site
    David

  3. #3
    Join Date
    Mar 2019
    Posts
    4

    Default Re: Bowman OM636 Heat Exchanger

    Quote Originally Posted by david_bagshaw View Post
    Depending where the hole is , the standard way to repair is to solder close one of the tubes, both ends.
    Serck
    https://serckheatexchange.co.uk/

    might be able to help.
    Thanks for your interest. I did not explain correctly, the hole is inside the water jacket of the Exchanger (Die cast Aluminum) not in the tube.
    Regards
    John G

  4. #4
    Join Date
    Jun 2005
    Location
    Mid Devon
    Posts
    6,250

    Default Re: Bowman OM636 Heat Exchanger

    If you can't get one. You can use a umiversal heat exchanger mounted on the bulkhead and connect to the engine with hoses. Works just the same as the engine mounted version.
    Brexit: Taking back our freedom as a sovereign nation.

  5. #5
    Join Date
    Mar 2019
    Posts
    4

    Default Re: Bowman OM636 Heat Exchanger

    Quote Originally Posted by PCUK View Post
    If you can't get one. You can use a umiversal heat exchanger mounted on the bulkhead and connect to the engine with hoses. Works just the same as the engine mounted version.

  6. #6
    Join Date
    Jun 2005
    Location
    Mid Devon
    Posts
    6,250

    Default Re: Bowman OM636 Heat Exchanger

    Yup, that's what I said!
    Brexit: Taking back our freedom as a sovereign nation.

  7. #7
    Join Date
    Jun 2001
    Location
    uk
    Posts
    2,260

    Default Re: Bowman OM636 Heat Exchanger

    drill hole larger and use epoxy putty? or get it welded?
    David

  8. #8
    Join Date
    Mar 2019
    Posts
    4

    Default Re: Bowman OM636 Heat Exchanger

    Thanks for advice.
    The hole is to the inner tube and really cannot be reached. There is also a fair bit of visible corrosion elsewhere.
    The universal heat exchanger is interesting but would not get any cooling on the exhaust manifold which would create a lot of heat. Apparently a new casing is available on order, so I am going to have to go there.
    Thanks again.
    jg

  9. #9
    Join Date
    Jun 2005
    Location
    Mid Devon
    Posts
    6,250

    Default Re: Bowman OM636 Heat Exchanger

    Ah, you didn't mention it was a combined unit!
    Brexit: Taking back our freedom as a sovereign nation.

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