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Case Tractors Discussion Forum
Show Parts for Model:

Re: Backlash better and more shim material ordered

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Cariboo4x4

04-16-2018 18:30:22




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Pinion teeth appear to be going deep (all the way) into ring gear teeth. It looks like nearly two pinion teeth are sunk deep into ring gear teeth.

I compared old carrier housing with new ones and they look very similar however the new carrier housing actually places the pinion side gear and its bearing closer to ring gear. If I were to use old housing I'd have to put 0.040" under bearing race! I double checked and triple checked my measurements.

I tried another pinion side gear on RH side that had an old bearing on it, and I still had to use the 0.020" shim under race to get low backlash and the backlash was 0.009". Better but this side gear I can't use due to spalling on teeth that mesh with bull gear.

I actually bought a better set of pinion side gears because my initial set the teeth were very badly spalled. I ordered a good used set from Jean Claude Marleau and they had a different profile shape of gear teeth. I felt they were noisy and rough sounding when I placed them on my center wheel pinions when bench tested. I thought they may be incorrect so I sent one of my original pinion side gears to Jean Claude to match up. See first photo below:

[URL=http://s65.photobucket.com/user/godtool/media/AFAFEBFD-A76D-40FF-B865-9A48C6924762.jpg.html][/URL]

This 2nd photo shows the pinion side gear teeth profile that matches my pinion gear teeth profile. It meshes smoothly and quietly when tested on bench:

[URL=http://s65.photobucket.com/user/godtool/media/782C5864-61A1-4D0A-A891-B2CA5FFEE522.jpg.html][/URL]

SEE THIRD FOURTH PHOTO BELOW:

Left side of photos: Pinion Side Gear that does not match my shape of pinion gear teeth in center wheel. This was first pair of pinion side gears I received from Jean Claude.

Right side of photos: Pinion Side Gear that match my shape pinion of gear teeth in center wheel. I sent Jean Claude one of my old pinion side gears to match up. He sent me a pair which are currently installed.

[URL=http://s65.photobucket.com/user/godtool/media/CF27E4C6-4E2C-41B8-ACBA-98DA1587BB00.jpg.html][/URL]

[URL=http://s65.photobucket.com/user/godtool/media/F29A0551-4CF5-4F44-AD76-0CBBA95FE540.jpg.html][/URL]

I placed the two different styles of side gear pinions on my center wheel pinion using using an appropriate thrust washer that gave within spec of backlash. I could definitely tell that if I used the side pinions Jean Claude sent me the first time I would not have to use the shim behind the race and most likely have to have carrier housing shims on both sides.
My question now is, could\should have I used the side gear pinions with the gear teeth that don't match the shape of the teeth in the pinions in the center wheel? Maybe someone who owned machine years before me used the wrong pinion side gears?

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