1332 shifting itself - Snowblower Forum : Snow Blower Forums
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post #1 of 17 Old 12-22-2019, 09:36 AM Thread Starter
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1332 shifting itself

It seems I purchased an automatic shift model of ariens. It's likely and adjustment that I've overlooked but the shifter will climb up from 1st to 4th as I drive. It would be convenient if we didn't get a lot of snow that bogged down the machine. As it is, it'd be nice to have control back over the machine.

This is a used 3-5yr old model that appears to be in good shape with minimal wear or signs of rust.

Any ideas?
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post #2 of 17 Old 12-22-2019, 09:46 AM
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Could be a lot of things, but I would bet that a bushing, bearing or something else is amiss, causing the Disc to come into the drive plate at an angle, thus walking itself into higher gears.

You would have to look and see what is going on in there.
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post #3 of 17 Old 12-22-2019, 10:16 AM
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Looks like you got to open up the belly pan and see what is going on
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post #4 of 17 Old 12-22-2019, 10:35 AM
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The gear-select lever pops itself out of the slots that (I assume) are in the dashboard?

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post #5 of 17 Old 12-22-2019, 10:38 AM
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If the lever on the dash is moving, unless it is different than every AriensI have ever seen, the detents are on the shifter, not in the belly, and if it is jumping between detends/positions, then the tension spring in the shifter that holds the lever in it's detent is where I would look. If the speed changes, but the lever does not, only then would I look in the belly.
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post #6 of 17 Old 12-22-2019, 10:56 AM Thread Starter
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Correct, I can watch the lever jump through the detents. I've cranked the spring down to 2/3 compressed but started to think there might be another adjustment that is out.
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post #7 of 17 Old 12-22-2019, 11:07 AM
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Maybe that the linkage is binding, and causing it to move, due to the tension. I'd check the linkage for corrosion and not allowing it to move freely.




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post #8 of 17 Old 12-22-2019, 11:21 AM
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Quote:
Originally Posted by tadawson View Post
If the lever on the dash is moving, unless it is different than every AriensI have ever seen, the detents are on the shifter, not in the belly, and if it is jumping between detends/positions, then the tension spring in the shifter that holds the lever in it's detent is where I would look. If the speed changes, but the lever does not, only then would I look in the belly.
Agreed, but there is also the two parts of the selector rod from shift lever to bell crank. There is some adjustment where they join so if the bolts are loose then perhaps the friction wheel can move across the drive plate without affecting the shift lever position. Wouldn't need much movement in that adjustment area to change a few gears. Not sure how that would affect overall gear selection, but it would take just a few minutes to check.

Just a thought.

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post #9 of 17 Old 12-22-2019, 11:42 AM
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With engine running .....

When you slowly squeeze down on left drive handle .....

How much downward movement happens before machine starts to move ???

Also a picture of the handle bars from the front or a model number would also help identify your exact machine.

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post #10 of 17 Old 12-22-2019, 11:51 AM
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Quote:
Originally Posted by Town View Post
Agreed, but there is also the two parts of the selector rod from shift lever to bell crank. There is some adjustment where they join so if the bolts are loose then perhaps the friction wheel can move across the drive plate without affecting the shift lever position. Wouldn't need much movement in that adjustment area to change a few gears. Not sure how that would affect overall gear selection, but it would take just a few minutes to check.

Just a thought.
True, but if the shift lever itself is actually jumping between detents (per the post at 10:56), then something is forcing the entire linkage to move. Not just the lower half of the linkage (going into the belly pan) that controls the actual friction disk position.

It does sound like either the spring at the lever is too-light somehow, or something underneath the machine is really forcing the friction disk to the side, hard.

Sled, to try and isolate symptoms a bit, what happens in reverse? Will it jump from reverse 1 to reverse 2?

And if you had it in, say, forward 2, and were driving along, how difficult is it to hold the lever in the 2nd-gear position, if you slide it out of the detents? I realize it must vary from machine-to-machine. But I have a sense of how that feels on mine. If you've ever shifted on-the-fly before (while driving), you might have some context for how that feels normally, how hard the lever is pulling towards the higher gears.

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Last edited by RedOctobyr; 12-22-2019 at 11:55 AM.
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