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  1. #1
    Super Member Gary Fowler's Avatar
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    Bismarck Arkansas
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    2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010

    Default Something else to check for loose bolts.

    On my 50 hours oil change, I noticed these bolts loose, very loose and tightened them up. NOW got about 78 hours and was fooling around with my disc and decided to grease the 3-4 zerks on it and noticed that these bolts were REALLY loose now, some 4-5 rounds and a big gap in the bottom of the joint. I used the FEL to get the weight off and started tightening them up (19mm socket required). GOT to the last bolt and it had broken off but it did leave enough to get vise-grips on it and get out the stud. After getting the stud out and tightening the rest of the bolts (I loosened them all back up to get the broken stud out) , I checked the other wheel and they were loose also. While tightening those, one broke off but I was able to unscrew it by hand. Looking at the end, it was rusted about half way thru and evidently had been broken for a while. I have carried some pretty good loads of dirt with the FEL so that may be why they are loosening off.
    Everyone should check these axle to steering hub bolts, especially if you have a P 7010.
    The two broken bolts were in the same location except flipped 180 degrees, one was to front of tractor and the other was toward the rear -img_1187-jpg-img_1188-jpg
    2010 LS P-7010C 20F/20R gear tractor & FEL, 2009 Kubota B 26 TLB, RTV 900 Kubota,17 foot Lund boat with 70HP motor, 2012-20 ft 12k GVW trailer, 2011- 52" Craftsman ZTR mower, 2013 Ferris Zero Turn, 3 weed whackers, pressure washer, leaf blowers, 7 foot bush hog, 8 foot landscape rake , 8 foot 3 PH disc, 2 row cultivator, 350 amp Miller AC/DC welding machine and all the tools needed to keep them all repaired and running.

  2. #2
    Silver Member Mike1369's Avatar
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    Miami, Fl
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    Baddest LS P7010C south of Palm Beach County

    Default

    I will check mine this week... Should these bolt have pressure washers to keep them locked in.

  3. #3
    Gold Member MrChris's Avatar
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    Dec 2006
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    Georgia
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    Mahindra 3215HST

    Default

    Good catch! It's interesting because on my Mahindra I actually noticed some daylight at the same location on the right side after about 50 hrs. No broken bolts but the lower ones were loose enough to notice the separation. Tightened them up and haven't had an issue since. I soon learned afterward that the right hub is part of the assembly process here in the States.....oops! (Several people with same model had similar issue here on the forum) The left hub bolts never loosened.
    Last edited by MrChris; 02-25-2013 at 02:52 PM.

    '06 Mahindra 3215HST,KMW ML111 FEL,BushHog SBX65 Boxblade,BushHog RZ160 Rotary Cutter,Kasco KOS604 Seeder,Cosmo 250 3PT Spreader,Southern 6' Landscape Rake,Rhino LR 6' Rear Blade

  4. #4
    Super Member Gary Fowler's Avatar
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    2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010

    Default Re: Something else to check for loose bolts.

    Quote Originally Posted by Mike1369 View Post
    I will check mine this week... Should these bolt have pressure washers to keep them locked in.
    Yep, they have lock washers but not doing the job. Maybe it is time for some of that blue or red Loctite. First I have to find 2 of the 10.9 grade x whatever mm those are (look to be about 12mm or so and fine thread) by about 25mm long bolts.
    2010 LS P-7010C 20F/20R gear tractor & FEL, 2009 Kubota B 26 TLB, RTV 900 Kubota,17 foot Lund boat with 70HP motor, 2012-20 ft 12k GVW trailer, 2011- 52" Craftsman ZTR mower, 2013 Ferris Zero Turn, 3 weed whackers, pressure washer, leaf blowers, 7 foot bush hog, 8 foot landscape rake , 8 foot 3 PH disc, 2 row cultivator, 350 amp Miller AC/DC welding machine and all the tools needed to keep them all repaired and running.

  5. #5
    Silver Member Mike1369's Avatar
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    Baddest LS P7010C south of Palm Beach County

    Default

    Maybe a higher grade so the heads don't snap off.

  6. #6
    Super Member Gary Fowler's Avatar
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    2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010

    Default Re: Something else to check for loose bolts.

    Quote Originally Posted by Mike1369 View Post
    Maybe a higher grade so the heads don't snap off.
    I don't know of anything higher than the 10.9 grade of bolt. I would suspect that the bolt broke because it got stressed when the rest of them loosened off.
    Most of the bolts are 8.8 grade but these are super high strength.
    I looked up on google and found that they do make a 12.9 with 1220 MPa strength compared to the 10.9 at 1040 MPa (150,800 PSI). You rarely find anything more than 8.8 grade. The 10.9 is equivalent to the ASTM A490 bolts which are classified as high strength bolts for use in structural steel and bridges
    Last edited by Gary Fowler; 02-25-2013 at 12:47 PM. Reason: Added info on bolt strengths.
    2010 LS P-7010C 20F/20R gear tractor & FEL, 2009 Kubota B 26 TLB, RTV 900 Kubota,17 foot Lund boat with 70HP motor, 2012-20 ft 12k GVW trailer, 2011- 52" Craftsman ZTR mower, 2013 Ferris Zero Turn, 3 weed whackers, pressure washer, leaf blowers, 7 foot bush hog, 8 foot landscape rake , 8 foot 3 PH disc, 2 row cultivator, 350 amp Miller AC/DC welding machine and all the tools needed to keep them all repaired and running.

  7. #7
    Platinum Member
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    sioux city, ia
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    Oliver 1855, Case 1840, Cub 1550

    Default Re: Something else to check for loose bolts.

    If one bolt broke do to stress, then the others were probably stressed also. Replace all of them and use locktight.

    Dave

  8. #8
    Super Member Gary Fowler's Avatar
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    2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010

    Default Re: Something else to check for loose bolts.

    That is probably the best solution. Which color Loctite would be best for these bolts RED OR BLUE>
    2010 LS P-7010C 20F/20R gear tractor & FEL, 2009 Kubota B 26 TLB, RTV 900 Kubota,17 foot Lund boat with 70HP motor, 2012-20 ft 12k GVW trailer, 2011- 52" Craftsman ZTR mower, 2013 Ferris Zero Turn, 3 weed whackers, pressure washer, leaf blowers, 7 foot bush hog, 8 foot landscape rake , 8 foot 3 PH disc, 2 row cultivator, 350 amp Miller AC/DC welding machine and all the tools needed to keep them all repaired and running.

  9. #9
    Platinum Member
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    sioux city, ia
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    Oliver 1855, Case 1840, Cub 1550

    Default Re: Something else to check for loose bolts.

    I always use red on steel or cast iron parts.

    Dave

  10. #10
    Silver Member Mike1369's Avatar
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    Doesn't red require heat to remove bolt later. Won't blue do the same.

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