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Final drive leak thread

Discussion in 'V7/V85/V9 Chat & Tech' started by francod123, Jul 10, 2014.

?

Does your V7 Final Drive leak? Select all that apply, and be sure to include model year below.

  1. No

    55.6%
  2. Yes. Haven’t tried to fix

    17.8%
  3. Yes. Has been fixed.

    20.0%
  4. Yes. Was fixed but issue returned.

    2.2%
  5. I have a pre 2013 v7

    8.9%
  6. I have a 2013-2015 v7

    22.2%
  7. I have a V7 ii

    22.2%
  8. I have a V7 iii

    33.3%
  9. V9

    4.4%
Multiple votes are allowed.
  1. vagrant

    vagrant High Miler GT Contributor

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    you should have just gotten the seal # and gone down to the local bearing house while the mechanic was on lunch. $25. and you would have been riding an hour later and the dealer could have kept the new seal for next time.
     
  2. Teg

    Teg Just got it firing!

    Joined:
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    vancouver
    I have a 2016 racer with just over 13k km on it. I had the 10k done and the servicing shop overfilled the transmission fluid, but that was 3k km ago, and I took it back to get it resolved. Yesterday I drove 400 km in non-stop pouring rain, but had no issues that I could tell. Today I went for a 100 km ride and noticed on a right corner my rear wheel lost traction for a moment. I pulled over to see what was going on and my rear tire is sprayed with fluid all over the right side. And while stopped it was pooling down on the bottom of the rim.

    I've been reading through this forum and it seems likely that it's an issue with the final drive, but I am at least 400 km away from the nearest Moto Guzzi shop, so I'm wondering if there are things I should do before I can get it there.

    Is it worth taking the rear tire off and checking the flanges at this point? Do they suddenly get loose and have transmission oil spray every where or is this likely a gasket issue or some other leak?

    The fluid was kind of a light brown creamy colour - not what I was expecting. Does this change anything, or is it still likely transmission oil?

    Is it possible that water somehow got in there during the ride in the rain or outside last night? I don't usually park outside, but I ride in the rain all the time. I'm wondering if water filled up the reservoir a bit and forced it out of the overflow valve.

    Any advice is appreciated!
     

    Attached Files:

  3. V700Steve

    V700Steve High Miler GT Contributor

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    Moister gets in, don't take much to make it milky. Swap out the big seal and you'll be fine.
     
  4. Michael Boeglin

    Michael Boeglin Tuned and Synch'ed GT Contributor

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    would love to get a sense of how many of you do or don’t have this problem, and what gen of V7/9 you ride. If this is a bad enough problem perhaps we can talk with someone at corporate when they get back from their summer break.
     
  5. Chokoloso

    Chokoloso Tuned and Synch'ed

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    Mine just started last week. Taking it to the dealer today
     
  6. oldlegs

    oldlegs Tuned and Synch'ed

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    Location:
    south yorkshire england
    Try removing level plug and see if water has "over filled it". If so drain contaminated oil out refill to bottom of level plug thread clean it all up and have a carful ride and check for leaks. I've had water in mine after 500miles in heavy rain, had to change oil twice before I was happy with the colour of the oil.
     
  7. Roland Donnell

    Roland Donnell Just got it firing! GT Contributor

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    Location:
    Plano, Texas United States
    2017 V9 Roamer
    mileage 4316 12-05-2018
    Found oil on right side of wheel/tire after a 30 mile mid 40's ride at freeway speeds. Inspection revealed oil drip forming on bottom of final drive at wheel. No oil leaking before start of trip when I checked tire pressure. Returned to dealer for correction. Dealer report stated IT APPEARS IT WAS A RESIDUAL OIL LEAK FROM THE FACTORY. FINAL DRIVE NO LONGER LEAKING. Trailered it back home, removed the fill plug and verified correct oil level at bottom of fill port. Geared up and aired it out on the freeway at 70+ speeds for approx. 25 miles. Temps in the mid 50's. No trace of oil after the ride or two days later parked. Will report back if there is a recurrence.
     
  8. Dinsdale Piranha

    Dinsdale Piranha Cruisin' Guzzisti GT Contributor

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    Location:
    West Oz
    2017 V7iii Special. Just spatters a bit on the right side of the rear rim, a bit like a chain driven bike. Dealer knows about it and will fix it at next service.
     
  9. V700Steve

    V700Steve High Miler GT Contributor

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    Location:
    Atlanta area, GA
    I started seeing more leaks in the rear around 2013, never seen much of it before. Almost like the minimum machining standard for that hub had changed.
     
  10. JACoH

    JACoH Cruisin' Guzzisti

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    Location:
    Pacific Northwet
    2017 V7 III Special, just turned 15,500 miles, no leaks.
     
  11. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Location:
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    I've posted on this before... most of the leaks I have undercovered were simply loose inner flange bolts on new bikes. I check these on all 600-1000m services at my shop.
     
  12. Duane Beery

    Duane Beery Tuned and Synch'ed

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    Snake bit! I just noticed oil residue on my rear rim and bottom of the bevel drive. It's not bad but paranoid about oil getting on the rear tire. I've already had a low side dumper on the right side that I couldn't explain, maybe this was the cause? I did just replace the rear drive fluid, I think I'll clean the vent and take a bit of fluid out of the drive to see if it makes a difference.

    I'd like to keep this thread going since this seems to be a common issue.

    Update: I pulled the filler plug and had quite a bit of new fluid drip out. I let it drip until it stopped and pumped just a tiny bit more out. I'll test ride tomorrow and check it.
     
    Last edited: May 9, 2019
  13. Hasse

    Hasse Just got it firing!

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    Location:
    Sweden
    v7 cafe slutväxel.PNG Hello everyone.
    Some info for you who have leakage. At my V7 Classic cafe 2011 I had it. There was a damage from the factory (Blue marker at Red Arrow)
    Put it in the lathe and used a sandpaper for the damage And
    mounted new radial seal (number: 15)

    Perhaps you can imagine that some have that damage and it only changes seal, then it will not take so long until the damage has worn down the seal again.

    Hope you can read my text (have Swedish as native language
     
    Last edited: May 9, 2019
    GT-Rx® likes this.
  14. greer

    greer Just got it firing!

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    I believe this is exactly the corresponding part we were advised to sand/polish on our Roamer in order to prevent a potential leak. We ordered the seal and have it in hand, but didn't know exactly what we might get into as far as the tear down and reassembly, so we've done nothing so far. We thought we had a leak, but it turned out to be an overfilled gearbox. We're still concerned about the potential problem though, especially since we are heading out to see the California Redwoods later this month.

    Sarah
     
  15. vagrant

    vagrant High Miler GT Contributor

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    Sara, are you past the 2 year warranty period? If not they should be replacing it. If so I would put in 5.4 oz (.2 less than stated) of dino not synthetic oil before I dove into it.
     
  16. greer

    greer Just got it firing!

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    Yes, warranty ended in April, just a few weeks before we bought the bike. We will probably sit tight and hope for the best.

    Sarah
     
  17. Duane Beery

    Duane Beery Tuned and Synch'ed

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    I discovered another negative to letting the final drive leak onto the rear rim. I couldn't figure out why my raear brake was almost useless, it did nothing. I replaced the rear pads and found the old ones oil soaked. I cleaned the rear disc with cleaner and fine emery cloth. Now it works pretty good. Don't let your leak go too long!
     
  18. Dinsdale Piranha

    Dinsdale Piranha Cruisin' Guzzisti GT Contributor

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    It took my dealer 2 attempts. No questions asked. He was happy to do it. All's well so far.
     
  19. Royster

    Royster Just got it firing!

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    Location:
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    Hi all, New here, from Liverpool UK.
    I have a V7 III Milano bought in March 2019. Just clocked 3500miles after a tour of the Scottish Highlands and I've noticed oil drips on the rear right side wheel rim. I've taken on everything mentioned here and have just booked in with my local dealer. He is inspecting and going down the warranty route.
    I had done a load of short journey on 30°C roads. Heat and pot holes....

    So points to take to the dealer...
    Blocked breather
    Loose flange bolts
    Knackered seal(s)
    Bearings not flush
    Too much oil
    Imperfections
    All the above.

    Funny thing is I have been caning the rings off the gal coming back from bonnie scotland last week, 95mph motorway through rain and side winds for a significant distance. Left it parked up for 3 days then washed all the crap off. No problems.
    Go for a leisurely ride in the hot Sun and it bleedin' leaks!
     
  20. Royster

    Royster Just got it firing!

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    Location:
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    I'm going to extract the breather bolt and flush out any crap with compressed air.

    I've seen some fixes to this bolt using banjo bolts and plastic tubing etc.

    Any other ideas as removing the bolt once a week will be a gnaws ache.
     
    Last edited: Jul 28, 2019

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