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Old 06-14-2011, 09:31 PM   #1
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Default How do you notice diff wear?

I haven't seen this posted yet and I myself am wondering how do you see if your spider gears are worn etc? What do you look for on deciding if they need replacing or do they not wear?
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Old 06-14-2011, 09:34 PM   #2
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if the teeth are rolled over or chipped, its time to replace. but if you shim and assemble properly it should last you a very long time.
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Old 06-14-2011, 09:35 PM   #3
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Default Naaa

They usually don't wear, but the center diff cup they ride in can wear...I usually replace the center diff cup, the thing the cross pins ride in every now and then....
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Old 06-15-2011, 04:21 AM   #4
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Sometimes you can see very tiny shiney things in your diff oil when you open the case...
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Old 06-15-2011, 10:05 AM   #5
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Quote:
Originally Posted by JUD View Post
Sometimes you can see very tiny shiney things in your diff oil when you open the case...
Well i know that, im talking more on the lines of you have a used set of diffs. You want to see which are in better shape but cant tell.
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Old 06-15-2011, 07:21 PM   #6
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If you see the wear marks on the outside of the teeth of the ring gear you are getting close. At that point make it good and tight for the next race and order a new one. Also a good idea is to order a new diff housing at this point because the old one may have worn out at that point. They do get a ton of stresses put on them from many different ways. You can see the wear marks via the shiny part of the teeth. Always check to make sure the wear marks are on the center of the teeth, otherwise adjust your shimming. All the way in is too tight, all the way out is too loose. As a rule of thumb truggy needs to be a little tighter. Hope I helped out there.
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Old 06-15-2011, 08:52 PM   #7
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get a mugen. I swear these gears don't wear. One of my gearsets is almost 3 years old and just as good as a new set i bought not to long ago, and i still use both sets and i cant see/feel any difference between them. Even the pinions are in great condition.

shim them well, and treat them good and they will last.
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Old 06-17-2011, 06:27 AM   #8
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any off road kit has a life span of about 15 gallons. The smart thing to do is get a new kit after that. You should be able to sell the old one for $100 as long as it runs. There are lots of bashers, and kids that look for cheap used stuff to play with.
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Old 06-17-2011, 08:11 AM   #9
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Open them up and check.... Thats what I do.
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Old 06-17-2011, 08:21 AM   #10
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exactly^^^

open them up, clean all your pieces from the diff, clean your case completely.......inspect/replace spider gears...inspect/replace sun gears.....inspect/replace cross pins.....inspect/replace/re-lube bearings in drivetrain while you are there....also check your outdrives/universals.
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