14SB rear height adjusters repairable? - MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information
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post #1 of 5 Old 07-16-2019, 10:17 PM Thread Starter
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14SB rear height adjusters repairable?

I received a "fixer upper" John Deere 14SB walk-behind mower. I'm trying to rebuild the drive axle and could use confirmation of how it's supposed to work. First picture shows the drive transmission axle removed, along with the L & R rear height adjusters.

The second picture shows little needle bearing rollers visible in the right side. Are the needles supposed to ride on the axle directly or is there supposed to be an inner race that is missing in the picture? What does yours have? My other 14SB has a solid bushings instead of needle bearings, so I don't know what's supposed to be here. I don't know if I need to buy a new bearing or not. I looked on-line for parts and what is labeled "needle bearing" appears to be a simple bushing. Hmm...

The third picture shows the left side, which was totally rusted shrapnel of what used to be needle bearing rollers. I knocked out the remaining bearing race out with a 12mm socket. You can see the grease channel that is filled from the grease zerk and then grease is supposed to squeeze into the little hole in the bearing race, shown to the right. I can feel two holes in the grease channel, but grease comes out of only one when I push grease in the grease zerk, so I'll have to clean that out if the rest is repairable.

In this picture, the black painted mount plate and the circle inner race frame with the grease channel in it are supposed to be connected and the yoke around the circle is supposed to rotate free.

Comparing with the right side, it appears the round circle frame and the yoke are rusted together. Looking on the back side (last picture), I can see the swaged circular ridge that is suppose to connect the round circle frame and the black mounting plate has broken loose, so the black frame rotates free from all the other parts. Any way to fix this? If not, anybody have a left heigh adjuster they want to sell me?
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post #2 of 5 Old 10-09-2019, 01:50 PM
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Re: 14SB rear height adjusters repairable?

Since this was posted way back in July, the OP may no longer be around to read this reply, but I'll give it a shot anyway:

I looks like you have a bit of a mixed bag of height adjuster components there. The both rear height adjusters shown in your photos are what we call "Late Style" adjusters. There were a redesign of the "Early Style" rear height adjusters which had "needle bearings" in them (see first image attached with all-silver-colored early style height adjusters). The design of these early style rear adjusters were subject to wear, requiring replacement of the entire adjuster. So Deere redesigned the rear height adjusters and came out with the "Late Style" like yours. These featured a replaceable bushing (Deere Part No. M113167). The bushing were an improvement in that if they developed (through improper lubrication maintenance) they could be knocked out and replaced with a new one.

Based on your photos looks like someone has inserted "Early Style" needle bearings into it late style adjusters. Why someone would do that I don't know but maybe the parts fit. The correct part for those adjusters in the "simple bushing" (M113167).

My suggestions is that you remove the needle bearing from the right side, completely clean the hardened grease out of both adjusters, order a pair (2 total) of new M113167 bushings from a dealer or online, and try putting the new bushing into your old adjusters. Before you put them back on the mower, grease both adjusters until new grease is squeezing out on the inside of the new bushings. Then re-install on the mower. That should put you back in business using the adjusters you already have for a minimum of expense.

If for some reason that process doesn't work, I have several sets of pre-owned "Late Style" rear height adjusters that I would sell via Private Message.

Hope this helps.

SilverDeck

Photos attached:
1) pic of Early Style rear height adjuster. These had the needle bearings
2) pic of a Late Style rear height adjuster. Adjuster in photo DOES NOT have the bushing inserted into it yet. It is also missing the silver and black height height adjuster arm.
3 & 4) Pics of Later Style rear height adjusters with bushings inserted
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Last edited by SilverDeck; 10-09-2019 at 01:56 PM.
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post #3 of 5 Old 10-10-2019, 08:32 PM Thread Starter
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Re: 14SB rear height adjusters repairable?

SilverDeck,

Yes, I cleaned the needle bearings out of the left side. On the right, the needle bearings themselves looked okay, but I couldn't tell if an inner bearing race was missing. Were these designed to run directly against the axle with no inner race?

I hear your suggestion to just pop out the bearings on the right and replace both sides with bushings. So, do the bushings have little "weep" holes for the grease to come out onto the axle?

But.. in any case... as I wrote, the black painted mount plate and the circle inner race frame with the grease channel in it are supposed to be swaged together, while the yoke around the circle is supposed to rotate free. Instead the yoke adjustment lever and the round circle outer bushing frame are rusted together, so even if I installed new bushings, the adjustment won't adjust.

I think I would live with loose swage connection on the back side - or maybe I'd epoxy it, but first I would have to break the rust free so the yoke rotates freely, and I haven't figured out how to do that.
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post #4 of 5 Old 10-10-2019, 08:33 PM Thread Starter
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Re: 14SB rear height adjusters repairable?

How does your second picture not have a "handle"? Isn't the handle integral to the rotatable yoke?
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post #5 of 5 Old 10-11-2019, 10:22 AM
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Re: 14SB rear height adjusters repairable?

Quote:
Originally Posted by exohomestead View Post
How does your second picture not have a "handle"? Isn't the handle integral to the rotatable yoke?
The second photo shows only the rear "Adjuster Kit" (Deere Part No. AM116818). This as an ambidextrous part that can go on either side but you have to rivet the left side lever arm or right side lever at to it.

A fully assembled rear adjuster kit for the left side looks like this and includes the Adjuster Kit, lever arm, bushing, and lubrication fitting (grease zerk).
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