Toro LX500 Mower

Paul2277November 1, 2013

Hi Everyone,

My issue is when I go down slopes or hills the mower does not brake and I hear a clicking sound from the transmission. I feel as if I am on a rollercoaster.

Here is one thing I have notice. With the mower turned off, battery removed and belt removed. If I put the mower in reverse and roll it back and forth the flywheel spins. If I put it in forward and move the mower back and forth the flywheel does spin and a clicking sounds come from the transmission.

Any thoughts?

Thanks
Paul

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mownie(7)

Paul, we are going to need the technical model number and serial number of the tractor in order to find an online parts illustration to see what might be possible.
In your statement you say "battery removed and belt removed.".
Which belt are you referring to? Surely not the belt that drives the transmission?

    Bookmark   November 1, 2013 at 11:55AM
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tomplum

It sounds like the flywheel in question is the input pulley of the transmission. This is a single speed MTD transaxle. Clicking is never good when it comes from inside. 13AP60RP544 or /744 would be the MTD model. Parts are serviceable internally if you wish to go that route. An assembly is ~ $400.

    Bookmark   November 1, 2013 at 12:56PM
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mownie(7)

I have seen/heard many a component labeled with a misnomer, but that one flew right past me.
Good save Tom!

    Bookmark   November 1, 2013 at 1:03PM
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Paul2277

Model # 13AP60RP744.

That is correct its the flywheel that sits on top the transmission.

I took the belt off the pulley to see if I could Identify narrow now the problem. When I put the shifter in the forward position the mower rolls like it is in neutral. No resistance at all.

I have the transmission off and took it apart and I can see any damage. I am assuming the damage is to the differential asm. I believe that part can be replace for around $270.

Does this sound like a correct diagnoses?

Thanks,
Paul

Here is a link that might be useful: PartsTree

    Bookmark   November 1, 2013 at 2:14PM
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tomplum

I wouldn't say you are incorrect- tho I wouldn't want to make that assumption w/o tear down. Think of the fact that the input gear and forward bevel gear may be the culprit as well. Bearings etc need to be factored in, the shift fork can fatigue on this style of transmission too. You may want to hit the web looking for a deal on the whole assy. Is there an MTD # on the housing? Does the differential make crunching noises on tight turns?

    Bookmark   November 1, 2013 at 10:47PM
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mownie(7)

Before you go and order a differential assembly, how about posting some good close up photos of items # 15 and # 9 (in the IPL).
Those 3 are the only gears associated with forward and reverse.
The differential gears really only get active during turns. Though they will activate and allow 1 wheel to spin fruitlessly if traction conditions are lousy.
If you jack up the back of the tractor so that both drive wheels are off the ground, and spin one wheel, the opposite wheel should rotate in the opposite direction from the one you are spinning. If it does that, and you don't hear any crunchy sound while doing it.........the differential is OK.

    Bookmark   November 2, 2013 at 12:22AM
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InspectorHomes

I have a LX-500 with single speed transmission and reverse. Unit quit moving forward and made a lot of noise when the accelerator was pushed; also, the transmission was making a loud whining sound before it quit. I have taken the transmission out of the mower, removed and cleaned all the internal parts. I have found that the brass bushings (item #'s 14 & 21) are worn out, and that the steal bushings (4-item # 11) are loose, I am going to replace the seals (2 item # 12).
I will let y'all know how this repair turns out.
IH

    Bookmark   July 29, 2014 at 11:37PM
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