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Old 16-02-2018
daz75 daz75 is offline
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Default Diff maintenance

Ok I'm going to try and maintain my losi xx diff. I've never built a diff or done anything with a ball diff before. Any tips and also what are the parts that should be replaced
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Old 16-02-2018
daz75 daz75 is offline
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Have no clear diff grease will this be ok https://www.rccarshop.co.uk/muchmore...ff-grease-5g-p
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Old 16-02-2018
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MiCk B. MiCk B. is offline
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Hi,

That should be grand for the large main diff balls. You'll need a black grease (http://www.cmldistribution.co.uk/pro...d-black-grease) for the small thrust race. The black grease can also be used on cvds etc.

As for maintenance, clean everything (lighter fluid / electrical cleaner or similar) and assemble as per the manual. To check if it is loose, trap the drive shafts, and try to turn the diff gear. You can put an allen driver in each of the out drives. If you can turn the diff grear with the outdrives trapped then it needs to go tighter, 1/8 turn at a time. Tighten check for slip and tighen again if needed.

You should never run the diff lose in the buggy. If you hear a 'bark' sound under acceleration, that's generally the diff slipping. Diffs are not designed to slip. So if you hear a 'bark' check diff settings.

When all this is done and diff is tight, holding the diff gear you should be able to turn an outdrive and the other will turn in the opposite direction. The outdrive should be smooth to turn.

If it's rough to turn then parts will need replacing, thrust race first then the diff rings / balls.

When you are initially cleaning if the diff rings / thrust rings are badly pitted / worn, then they need to be replaced.
It is also possible to sand the diff rings / thrust rings, and re-use.
Hold the diff ring in one of the outdrives to sand it, if you do sand make sure to keep the ring square to the sanding surface.

Any questions on the above, just ask.


MiCk B. :-)
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Old 16-02-2018
daz75 daz75 is offline
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Thanks Mick, i guess the same info applies to all ball diffs
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Old 16-02-2018
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MiCk B. MiCk B. is offline
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Hi,

Info above was for ball diffs.

This is good guide for gear diff:

https://www.youtube.com/watch?v=8z_tG8oAnnk

MiCk B. :-)
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Old 16-02-2018
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another awesome diff tips vid

https://www.youtube.com/watch?v=EToj2yX76NU
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