MAN MMDS monitors

Discussion in 'General Maintenance/Repair Questions' started by BobFino, Jun 25, 2020.

  1. BobFino

    BobFino Member

    97
    Aug 26, 2010
    Virginia Beach
    Sea Ray 550 Sedan Bridge 2005.
    MAN 900
    Twin Disc MG-5114
    On my 550 sedan bridge with MAN motors, I have the two engine monitors. One for Port and one for Starboard. They are the MMDS-CLCB 6.3 monitors. The port one is acting up and I am looking into the Maretron system and run the engine data to the chart plotter. Does anyone have some input on this or have previously done it? Thank you
     
  2. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    No, sorry Bob, I don't. My "MAN man" says those displays are about $5500 each from MAN w/1 yr warranty. He gets them directly from the vendor for less than half w/2 yr warranty...

    That's all I know - one of those "fingers crossed" items...
     
    Last edited: Jun 25, 2020
  3. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    There is a small battery on the MMDS board that goes out (I've had to do both of mine), and it usually shows up as wildly incorrect engine hours...
     
  4. Henry Boyd

    Henry Boyd Well-Known Member GOLD Sponsor

    Apr 24, 2007
    Newburyport, on the peaceful and serene Merrimack
    ‘09 Sabre 38 Hardtop Express “Serenity”
    Volvo D6 w/IPS450 Pods
    Yikes, I thought Volvo engine displays had crazy pricing at $2200. I guess they are a bargain.
     
  5. ttmott

    ttmott PhD in OCD GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    Not knowing the MAN data protocol I would guess the engines provide data per SAE J1939 on a twisted pair of wires like most other industrial diesel engines. Carter may be able to confirm. If that is the case you may be able to implement a Maretron solution. This would be a J2K100 (J1939 to NMEA 2000 Converter), a NMEA 2000 network, and a Maretron DSM display. The Maretron display is required to program the J2K100 unless you have the Maretron programming software and interface. With the J1939 data converted to NMEA 2000 there are many ways to display and monitor the engine data besides a Maretron DSM.
     
  6. Jus the two of us

    Jus the two of us Active Member

    134
    Dec 7, 2015
    United States Lake Cumberland
    1998 Sundancer 450
    2009 Sundancer 55
    3116 Cats
    MAN 900
    I have a 2009 55 Sundancer with the 900s, Both are doing exactly that. Could you school me on battery and changing it?
     
  7. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    MAN had a goodwill program where they would refurbish the boards for $600 or so. They have ended that program last fall. My first one was done by my “MAN man“ and the second one he talked me through how to take the board out (We were not near his shop) and send it to him to be sent off to MAN before the goodwill program ended.

    I would like to believe that anyone familiar with computer boards could re-solder a new battery in. But both of mine went to MAN.

    I could give you the general details of how I got my board out and back in if you would like.
     
  8. alnav

    alnav Well-Known Member PLATINUM Sponsor

    Sep 16, 2009
    West River, MD
    40 MY
    QSB 425
  9. Jus the two of us

    Jus the two of us Active Member

    134
    Dec 7, 2015
    United States Lake Cumberland
    1998 Sundancer 450
    2009 Sundancer 55
    3116 Cats
    MAN 900
    T
    That would be great, Did the hours go back to the correct hours or did something else have to be done for them to read correct. The Man dealer in Fl. said it would be $2000.00 to get each one done.
     
  10. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    The hours will be "0" and the MAN dealer has to hook his computer up to reset the hours from the ECM...

    I'll "have speaks" with my MAN man this week and ask him if there is a cheaper solution...
     
  11. bmac

    bmac Well-Known Member

    Jan 11, 2008
    Holbrook, NY
    2006 58 Sedan Bridge, Walker Bay Generation 390 RIB w/40hp Yamaha, 2014 Wellcraft 232 CC w/Yamaha
    MAN 900 CRM
    Bob (and any one else with the MAN MMDS-CLC 6.3 monitors)

    As Carter indicated, the battery on the monitors is usually the root cause of your monitor issues. According to MAN, the battery has an expected life of 10-12 years. Mine were replaced when the boat was 9 years old. The big issue is not actually replacing the battery on the MMDS board but on programming the hours into it. Also as Carter said, you need a MAN computer to input the hours, though I think MAN did that when my boards were down in Houston. Here's a company I found that does repairs to these monitors, I would imagine they can replace the battery, not sure if they can input the hours.;
    https://maxmarineelectronics.com/pr...display-screen-repair-service-save-thousands/
    Good luck and let us know how you go about getting them repaired. As far as replacing the monitors with another display, I'm not sure it can't be done, but there is a TON of data input to those displays which I think would require a lot of specialty conversion, but maybe not. I'd be curious to know.
     
  12. Jus the two of us

    Jus the two of us Active Member

    134
    Dec 7, 2015
    United States Lake Cumberland
    1998 Sundancer 450
    2009 Sundancer 55
    3116 Cats
    MAN 900
    Thanks for the info.
     
  13. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    Let me know if you'd like "the narrative according to Carter" of how to go about removing the MMDS board yourself, I'll be glad to post it...
     
  14. bmac

    bmac Well-Known Member

    Jan 11, 2008
    Holbrook, NY
    2006 58 Sedan Bridge, Walker Bay Generation 390 RIB w/40hp Yamaha, 2014 Wellcraft 232 CC w/Yamaha
    MAN 900 CRM
    Fire away, Carter.
     
  15. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    As background, in 2018, my stbd display hours went to about 72,000 and my "MAN man" told me exactly what it was, and said OK to use boat for a few months until my scheduled service and they would take care care of it which they did.

    Last year in the summer in TN, the right engine went to 102,000 hours. When called him again, I opened the conversation by telling him how amazed I was at these engines. He knew right away something was up, and he got a good laugh when I told him my port engine was doing so well with 102,000 hours on it! He said the same thing - no problem to operate it and he will fix it on my next service in January.

    In September, we were still in Chattanooga and he called to say I needed to get the board to him ASAP as MAN was ending their "goodwill" program on replacing the batteries. He gave me detailed instructions as follows.

    1. Pull the large upper plug on the port side on the control box
    2. Remove the top two allen screws holding the cover on, loosen the bottom left screw and remove the bottom right screw. This allows the cover to pivot to port and you do not have to disconnect the connector from the red EMER STOP button.
    3. Remove the top circuit board - 4 screws if I recall. It has 4 ribbon cables attached to the bottom of it. Rotate the board downward and let it hang from the ribbon cables.
    4. The MMDS board will now be in view. It is held in by 5 screws and easily removes with a little wiggle to pull it our of its two long plugin connectors in it's back.

    The MMDS board is two boards stacked together, and the battery is soldered in between the boards.

    Reinstall is the exact opposite of removal noting that there is a white connector that has to be slightly moved out of the way to let the upper left side of the MMDS board re-seat.

    I had one ribbon cable come loose on the outer board that was easy to re-seat.

    Be sure to use a phillips head that fits the screws well - they are very small machine screws.

    I sent the board to them on a Sat morning (FedEx insured for $5500), they got it on Monday sent it to MAN, was back to them on Wednesday and in my hands on Thursday.

    I cannot believe we don't have a source for a cheaper battery replacement service...
     

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