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  1. #1
    New Member
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    Oct 2009
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    Northeast PA
    Tractor
    Cub Cadet LT1050

    Default Shattered bearings in deck spindle lt1050

    I have a Cub lt1050 purchaced in 2005 with a 50" deck.

    Today I removed my blades to sharpen them. After reinstalling them the engine would stall when I engaged the PTO. After a little troubleshooting I discovered the belt was off the right side blade pulley. I reinstalled it but everytime I pulled the PTO knob the engine kept wanting to stall. Eventually I discovered the right spindle was seized. I removed it, dissasembled and found the bearings damaged, one twisted and the other cage actually torn, the spacer sleeve was broken into pieces. I had torqued the nuts when I assembled the blades back on to 90 ft lbs per the manual (70 - 90), Did I do it to myself?

    Oh yeah, there was plenty of grease in there and no dirt or moisture.

    I am guessing that the sleeve in there is for some sort of preload? Maybe like a crush sleeve?

    I am getting new bearings tomorrow at the local Cub dealer. Mebbe i'll try the 70ft lb torque this time?

    If anyone else has had a similar experience I would appreciate hearing a solution.
    Opposablethumbs

  2. #2
    Platinum Member OldMachinist's Avatar
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    May 2006
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    638
    Location
    Southwest Illinois

    Default Re: Shattered bearings in deck spindle lt1050

    You need to get a new spacer also. The spacer is precisely ground to maintain the proper preload on the bearings and without it you'll destroy the bearings the first time you tighten the blade nut.
    2006 Cub Cadet Z-Force50
    Agco Allis 1616H
    1974 SearsGT18 with 3 point,48"deck,Haban sickle mower and front dozer blade

    2000 Bobcat 453F with steel tracks
    1954 Ford860 with front end loader, 5' brushhog
    1952 Allis Chalmers CA with Woods L59 mower
    1947 Case SC
    1998 Honda ACTY 4WD mini truck
    And too many other small engine tools to list

  3. #3
    New Member
    Join Date
    Oct 2009
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    4
    Location
    Northeast PA
    Tractor
    Cub Cadet LT1050

    Default Re: Shattered bearings in deck spindle lt1050

    Quote Originally Posted by OldMachinist View Post
    You need to get a new spacer also. The spacer is precisely ground to maintain the proper preload on the bearings and without it you'll destroy the bearings the first time you tighten the blade nut.
    Sure. I understand why it's there. I picked up 2 new Timken bearings and a spacer tonight. I also discovered the large spindle bolt was bent pretty seriously. I straightened that and got the spindle reassembled. Spins sweet now. I ran out of daylight before I got it back in the deck.
    Opposablethumbs

  4. #4
    Platinum Member OldMachinist's Avatar
    Join Date
    May 2006
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    638
    Location
    Southwest Illinois

    Default Re: Shattered bearings in deck spindle lt1050

    Whatever the blade hit to bend the bolt likely cracked the spacer and when you retorqued the nut it failed completly. I'd lay the blade next to the another one to make sure its not bent also.
    2006 Cub Cadet Z-Force50
    Agco Allis 1616H
    1974 SearsGT18 with 3 point,48"deck,Haban sickle mower and front dozer blade

    2000 Bobcat 453F with steel tracks
    1954 Ford860 with front end loader, 5' brushhog
    1952 Allis Chalmers CA with Woods L59 mower
    1947 Case SC
    1998 Honda ACTY 4WD mini truck
    And too many other small engine tools to list

  5. #5
    New Member
    Join Date
    Oct 2009
    Posts
    4
    Location
    Northeast PA
    Tractor
    Cub Cadet LT1050

    Default Re: Shattered bearings in deck spindle lt1050

    I'll go along with that. I had some landscaping done in the last 2 years and doubled the size of my lawn area. The terrain hereabouts is very rocky. New things to hit. There were some... impacts... recently which is why the blades were off. I have new High Lift blades coming for my 3-bagger I just mounted so I will just replace them. They have done their bit.

    oldmachinist huh? My background is manufacturing starting back in the early '70's. Bridgeport mills, heavy and light vertical and horizontal mills. Then surface grinding including Blanchard, cylindrical and centerless. Switched careers to Quality branching out to CMM programming. Old indeed.
    Opposablethumbs

  6. #6
    Platinum Member OldMachinist's Avatar
    Join Date
    May 2006
    Posts
    638
    Location
    Southwest Illinois

    Default Re: Shattered bearings in deck spindle lt1050

    [quote=oldmachinist huh? My background is manufacturing starting back in the early '70's. Bridgeport mills, heavy and light vertical and horizontal mills. Then surface grinding including Blanchard, cylindrical and centerless. Switched careers to Quality branching out to CMM programming. Old indeed.[/quote]

    Sounds just about like my background but instead of going to the quality side I went to the CNC programming side of manufacturing and then into management. Then before the economy started going south I took a buy out and retired. I kinda saw the writing on the wall about the economy a year before it really tanked and was able to position myself so that it didn't effect me.
    2006 Cub Cadet Z-Force50
    Agco Allis 1616H
    1974 SearsGT18 with 3 point,48"deck,Haban sickle mower and front dozer blade

    2000 Bobcat 453F with steel tracks
    1954 Ford860 with front end loader, 5' brushhog
    1952 Allis Chalmers CA with Woods L59 mower
    1947 Case SC
    1998 Honda ACTY 4WD mini truck
    And too many other small engine tools to list

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