Cummins Marine Diesel Repower Specialists › Forums › Marine Transmissions › Zf 63a gearbox

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  • March 23, 2023 at 11:42 pm #145172

    Deborah Saville
    Participant
    Vessel Name: Easting down
    Engines: 5.9bt cummins
    Location: Queensland
    Country: Australia

    Can someone guide me. I have a Hurth gearbox zf63a, at idle the pressure reads 10 bar, at 1800revs 15 bar. I have changed the oil and filter but by the manuel pressure should be somewhere around 23. Can anyone help
    Thanks dave

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  • March 25, 2023 at 7:25 am #145232

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

    Hurth ZF 63A/68A Oil Pressures concerns

    Post a good pic of the gear, the gauge you are using and the location on the gear where you are measuring pressure.Ā  Ā If the tag says “hurth” , this gear could easily be pushing 30 years oldĀ Ā 

    If you were not measuring pressure, was there some type of symptom you were looking into?Ā 

    Was the PSI ever at spec?Ā 

    History of the gear?

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