Cummins Marine Diesel Repower Specialists › Forums › Instrumentation & Electronics › Tachometer Question

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  • August 16, 2018 at 2:33 pm #36038

    Bill Karmis
    Participant
    Vessel Name: Sweet LIps
    Engines: Cummins 330 6BTA59
    Location: PLeasant Prairie, Wisconsin
    Country: USA

    Hi
    I have a 2000 Tiara 31 Open with Cummins 330B motors
    Can anyone confirm where the tach signal comes from? Took my tachometer in for rebuild and they say my tachs are getting signal from something other than the magnetic pick up
    I havenā€™t seen any variation to this anywhere Iā€™ve read.
    Anybody know if they used anything else ?
    My controls are all manual no ECU or anything
    Any insights would be appreciated

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  • August 19, 2018 at 3:13 pm #36149

    Bill Karmis
    Participant
    Vessel Name: Sweet LIps
    Engines: Cummins 330 6BTA59
    Location: PLeasant Prairie, Wisconsin
    Country: USA

    Pics

    Here are some not sure what Iā€™m looking for

    August 19, 2018 at 2:43 pm #36148

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    Pictures of all would really help..

    Tony

    August 19, 2018 at 8:29 am #36127

    Bill Karmis
    Participant
    Vessel Name: Sweet LIps
    Engines: Cummins 330 6BTA59
    Location: PLeasant Prairie, Wisconsin
    Country: USA

    Sync

    Hi Rob
    Is this possible if there is no synchronizer on the boat?
    I do know the signal is not coming from the magnetic pick up as I plugged in a cheap working tach I got on amazon and unplugged the mag pick up and it kept working.
    Should I assume that sender is under the fan belt cage?

    August 19, 2018 at 1:40 am #36105

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    That boat likely has a synch setup with mech tach drive on front of engine at timing cover

    August 18, 2018 at 10:15 am #36092

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    Magnetic Pickup Location

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