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post #1 of 11 Old 07-10-2019, 05:00 PM Thread Starter
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Spindle reinforcement rings

I am going to replace the spindles on my 12 year old JD LA120 42 inch deck. Do you recommend that I use spindle reinforcement rings.I don't see any cracks but it is hard to look when the deck in in place. Don't know whether to just put them on even if I don't need them now.

Suggestions?

Thanks

John
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post #2 of 11 Old 07-10-2019, 10:07 PM
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Re: Spindle reinforcement rings

If your deck is good and solid then no worries.
You can also rebuild those spindles alot cheaper than replacing.
Make the call after you remove the deck.
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post #3 of 11 Old 07-11-2019, 09:33 AM
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Re: Spindle reinforcement rings

I want them for my 62C deck, but I am a sucker for any improvements, real or imagined.
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post #4 of 11 Old 07-11-2019, 01:44 PM
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Re: Spindle reinforcement rings

I believe the reinforcing ring for the 62C deck is M150229. I have not done it yet but have given it some thought for my deck. I suspect it is probably best if tack welded to the deck between the screw holes.

One thing I did do this year with my 62C is to fine tune the blade alignment by using washers as shims at the spindle mount screws. You want to have the belt off with the deck tilted up to do this. Rotate the blades and see how the tips line up, also use a straightedge across blades at various positions. It actually made a significant improvement to the cut, which now has that golf course look to it. And, it is cheap!

--tp
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post #5 of 11 Old 07-12-2019, 01:31 PM
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Re: Spindle reinforcement rings

If you do decide to buy the reinforcing rings, be aware that you will need longer screws. Many of the kits sold with screws come with 5/16" English screws. The John Deere "D" series spindles use M8 metric screws.
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post #6 of 11 Old 07-12-2019, 01:41 PM Thread Starter
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Re: Spindle reinforcement rings

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Originally Posted by Mean Green 318 View Post
If you do decide to buy the reinforcing rings, be aware that you will need longer screws. Many of the kits sold with screws come with 5/16" English screws. The John Deere "D" series spindles use M8 metric screws.
Thanks, I will look at that if I buy them. I know I need longer ones that I currently use if I add the deck ring.
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post #7 of 11 Old 07-13-2019, 10:11 AM
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Re: Spindle reinforcement rings

Due to the [ bean counter ] design I have found that L100 series spindles will have loose bearing bores at the bottom. The bearing will be a loose fit in the spindle housing due to galvanic corrosion.
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post #8 of 11 Old 07-13-2019, 03:50 PM Thread Starter
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Re: Spindle reinforcement rings

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Originally Posted by rayjay View Post
Due to the [ bean counter ] design I have found that L100 series spindles will have loose bearing bores at the bottom. The bearing will be a loose fit in the spindle housing due to galvanic corrosion.
So your saying buy the whole spindle and do not rebuild?
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post #9 of 11 Old 07-13-2019, 04:12 PM
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Re: Spindle reinforcement rings

Just a minor suggestion: If you do get the new spindles, tap some threads into the housing(s). It makes a whole heck of a lot easier even using the self tapping ones and removing later almost ensures that you don't break the screws.
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post #10 of 11 Old 07-13-2019, 04:39 PM
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Re: Spindle reinforcement rings

Jhon, Rebuild you spindles. If bearings feel loose in the bores, or the shafts, put some blue Loctite on the bearings. This will stop them from spinning in the housing and also make them removable in the future. DO NOT USE red Loctite! Bob
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post #11 of 11 Old 07-14-2019, 09:34 AM
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Re: Spindle reinforcement rings

Quote:
Originally Posted by jhon View Post
So your saying buy the whole spindle and do not rebuild?
Yes, buy new aftermarket spindles. On the last L100 deck I rebuilt I also drilled out the spindle mounting holes and used longer bolts and nylock nuts. This is the proper way to mount the spindles to the deck. It's what JD uses on the more expensive units. The longer bolts are stretched when tightened which keeps preload on the assembly. Also, if one was to come loose it's easy to retighten.

On the L100 series the short self tapping screws that are used to mount the spindles are another gift from the bean counters. It is common for these to wear loose which wallers [ ] out the mounting holes in the deck hence the need for reinforcement [ repair ] rings. Also, the self tapping bolts eventually seize up in the alum spindle housing and are usually impossible to remove. You end up breaking the bolts or else having to cut them off when the undersized 10mm head rounds off. Actually, now that I think about the seized bolts and the question you have asked,,,, have you removed the spindles on your deck ???? If you do decide to just replace the bearings DO NOT try to remove the spindles from the deck if they are still being held tightly by the fasteners. Just tap out the upper bearing and slide new ones in place. Jury rigs for loose, corroded out bearing bores were described above. Often the bearing bores are busted up so knockout the old bearings to inspect the spindle housings before deciding to replace bearings or the whole spindle.

Absolutely destroyed spindle mounting surfaces is very common on L100 series units and rare on the higher line units that use longer bolts and locking nuts. I've seen L100s with the spindle mounting holes torn completely through to the large center hole.
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