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Results 1 to 28 of 28

Thread: Hurth V Drive

  1. #1
    Join Date
    Sep 2008
    Location
    pensacola, fl, us
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    123

    Default Hurth V Drive

    I have a 1995 454 XL with a Hurth HSW 630 V 1 Vdrive. The Vdrive is giving me problems. At idle the pressure on the drive is low and when I put it in gear, it makes a clunking sound. When I rev the engine up to 1000 rpms, the drive pressures comes up, and I can put it in gear and she runs with no problem.
    Question,, Is there a pump that I can replace on the Vdrive? the ATF level is at the full mark and the filter is clean.

  2. #2
    Join Date
    Jun 2008
    Location
    Marblehead , OH, US
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    56

    Default Re: Hurth V Drive

    That's normal. You should actually have a label on your dash near the low pressure buzzer/light that states low pressure is normal under 1000 RPM. If light/buzzer stays off over 1000-1200 and dipstick says your full stop worrying...

    And you'll always have alittle bit of a clunk when put in gear. just make sure your doing it at idle RPM's

  3. #3
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
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    12,705

    Default Re: Hurth V Drive

    Have you changed the oil recently? That might smooth it out a bit more. As Kevin said, some clunking going into gear is normal, especially if the idle speed is too high.

    Jeff

  4. #4
    Join Date
    Sep 2008
    Location
    pensacola, fl, us
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    Default Re: Hurth V Drive

    Thanks, I will order the new filters and change the ATF when they get in. I hope that will take care of it. A little maintance is a lot cheaper than new V drives.

  5. #5
    Join Date
    Apr 2009
    Location
    MD USA
    Posts
    35

    Default Re: Hurth V Drive

    What is your idle speed? You could turn it up a bit if it is on the low side of the spec.

    JD

  6. #6
    Join Date
    Nov 2002
    Location
    Mullica Hill, New Jersey, United States
    Posts
    1,810

    Default Re: Hurth V Drive

    There is no low pressure alarm or light on the 630. You are thinking of the Walters remote system.

  7. #7
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    Sep 2008
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    pensacola, fl, us
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    Default Re: Hurth V Drive

    Right, I do not have a light or buzzer, just the gauge. My idle rpm is correct as per tach. Waiting for new filter and will keep you all updated. thanks, kevin Z

  8. #8
    Join Date
    Sep 2008
    Location
    pensacola, fl, us
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    123

    Default Re: Hurth V Drive

    O.K., I changed the fluid and filters on the V-drives. Same problem on the port side. Low pressure and when I put it in gear, it clunks but will not engauge in gear until I advance the throttle to about 1000 RPMs.
    The Hurth manuel says for low pressure the selector control could be the problem. I assume the selector control is the pump.
    Any ideas?? Or a good web site for Hurth V-Drives?
    Thanks

  9. #9
    Join Date
    Aug 2008
    Location
    Fairport, NY
    Posts
    1,479

    Default Re: Hurth V Drive

    I've never looked inside the Hurth, but it should have a input shaft driven gear pump, and the selector is the FNR/fluid control "valve". If the selector is worn, then there is too much fluid bypass at idle to enable the clutch to activate. So, yeah, the valve could be the issue; so could the pump. Did you happen to inspect the fluid for any metal bits?

  10. #10
    Join Date
    Sep 2008
    Location
    pensacola, fl, us
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    Default Re: Hurth V Drive

    Yes, I inspected the old fluid in a glass jar, and it looked fine. the filters also looked o.k. No metal shavings or debris of any kind.

  11. #11
    Join Date
    Aug 2008
    Location
    Fairport, NY
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    1,479

    Default Re: Hurth V Drive

    If that selector valve can come out without too much trouble (like the BW variety), I'd look at it. It may have orings or other contact surfaces that could show wear. A gear pump in oil will have a very long life, unless its starved for oil or its got metal in it.

  12. #12
    Join Date
    Sep 2008
    Location
    pensacola, fl, us
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    Default Re: Hurth V Drive

    Any ideas where I can get a Hurth shop manual?

  13. #13
    Join Date
    Apr 2010
    Location
    Portsmouth, NH
    Posts
    10

    Default Re: Hurth V Drive

    When changing the oil is what the best to use? Does anybody use amsoil or another kind of synthetic?

  14. #14
    Join Date
    Sep 2008
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    pensacola, fl, us
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    Default Re: Hurth V Drive

    In my Hurth owners manual, they have a long list of ATF for use. I went to NAPA and got three gallons of their brand. It had the specs that my manual said to use.

  15. #15
    Join Date
    Apr 2010
    Location
    Portsmouth, NH
    Posts
    10

    Default Re: Hurth V Drive

    Nice, So does anyone use synthetics or is reg. atf the way to go ??

  16. #16
    Join Date
    Sep 2008
    Location
    Maryland - USA
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    Default Re: Hurth V Drive

    Kevin:

    Did you check the control cables to make sure they are correctly adjusted?

    For the manual, maybe LineSix Rick can point you in the right direction? If not, I'd venture your local ZF shop can get one.

    Billymac: Most of us use the dino version, nothing wrong with the synthetics though. With an annual change and a clean oil cooler, the temp never gets high enough to warrant a need for synthetics. I'd imagine you get a slight boost due to the lower friction but wouldn't cover the cost difference unless you are running several hundred hours a year.

  17. #17
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    Default Re: Hurth V Drive

    Kevin:

    Read the second paragraph here:
    http://www.foleyengines.com/FreeTech...smissions.aspx

  18. #18
    Join Date
    Apr 2010
    Location
    Portsmouth, NH
    Posts
    10

    Default Re: Hurth V Drive

    Thanks, ya that makes sense.
    So heres a silly question..... how do i change the fluid in the tranns?? is there a drain plug in bottom or do i use the suction method like changing the oil? (Second season with boat)


    Quote Originally Posted by makomark View Post
    Kevin:

    Did you check the control cables to make sure they are correctly adjusted?

    For the manual, maybe LineSix Rick can point you in the right direction? If not, I'd venture your local ZF shop can get one.

    Billymac: Most of us use the dino version, nothing wrong with the synthetics though. With an annual change and a clean oil cooler, the temp never gets high enough to warrant a need for synthetics. I'd imagine you get a slight boost due to the lower friction but wouldn't cover the cost difference unless you are running several hundred hours a year.

  19. #19
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    Sep 2008
    Location
    Maryland - USA
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    Default Re: Hurth V Drive

    Not trying to be the sm@rt@ss, but have you read the engine owners manual? The basic fluid change processes are usually laid out pretty clearly in there.

    The BW gears in my hull prefer to have the cooler line pulled to drain the sump. I opt for the suction pump as the access is a bit tight. As with most lubricated units, you'll never get all the old fluid out with one fluid change. 90% +/- is reasonable for many units.

  20. #20
    Join Date
    Apr 2010
    Location
    Portsmouth, NH
    Posts
    10

    Default Re: Hurth V Drive

    Just trying to learn.....

    I have been going through the manual that i downloaded online and have not come across anything about changing trans fluid other than when to change and capacity.


    Quote Originally Posted by makomark View Post
    Not trying to be the sm@rt@ss, but have you read the engine owners manual? The basic fluid change processes are usually laid out pretty clearly in there.

    The BW gears in my hull prefer to have the cooler line pulled to drain the sump. I opt for the suction pump as the access is a bit tight. As with most lubricated units, you'll never get all the old fluid out with one fluid change. 90% +/- is reasonable for many units.

  21. #21
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    Sep 2008
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    Maryland - USA
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    Default Re: Hurth V Drive

    which gear do you have?

    There are many versions of the BW service manual online.

  22. #22
    Join Date
    Apr 2010
    Location
    Portsmouth, NH
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    Default Re: Hurth V Drive

    I've been looking for a few hours now and haven't found much ....i did take all numbers off trans.

    Hurth marine
    model# hsw-630v1-2,or
    s/n 13960k
    p/n 978.30.000.16








    Quote Originally Posted by makomark View Post
    which gear do you have?

    There are many versions of the BW service manual online.

  23. #23
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    Sep 2008
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    Maryland - USA
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    Default Re: Hurth V Drive

    billy - looks like the suction pump is the method used on the 630A versions, would be real surprised if the 630V type were different.

    will try to paste the 3 pages from the 630A manual on fluid changing.
    Attached Files Attached Files

  24. #24
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    Sep 2008
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    Default Re: Hurth V Drive

    Now have copy of service manual - PDF - for Vdrive. Too large to post; may be email-able based on server configurations. send PM with email address if copy desired

  25. #25
    Join Date
    Sep 2008
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    pensacola, fl, us
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    Default Re: Hurth V Drive

    Makomark,
    I would like a copy of the service manual please. let me know how to get it. thanks!!!

  26. #26
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    Sep 2008
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    Maryland - USA
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    Default Re: Hurth V Drive

    Kevin:

    click on my username at the top of this post. A pulldown appears. click the send message option. Send me a good email address that will handle a 3 MB attachment.

    If I get time, I'll try to email this evening.

  27. #27
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    Sep 2008
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    pensacola, fl, us
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    Default Re: Hurth V Drive

    Makomark,
    thanks, it is exactly what I needed.
    Kevin

  28. #28
    Join Date
    Sep 2008
    Location
    Maryland - USA
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    Default Re: Hurth V Drive

    It looks a little thin in some areas but it should be enough to get you headed down the right path. I'd guess the issue is centered in the 'control block'. Remember seeing an item stating to verify correct control cable so, in that sense, they "misbehave" just like a BW gear.

    Let us know what you find.

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