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Old 07-08-2005, 04:40 PM   #1
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Default R40 rear diff fluid, leaking

Hello - new member here. I have been running a Savage .26 for over a year and a RS4 18ss for about 4 months. I just got an R40 kit. I am installing this motor with an SG shaft. I am going to use it with this pipe. I am painting this body and this body.

My new R40ís build manual says to use grease in the rear diff but I figured that silicon fluid would be better. I filled the rear diff up with 5,000 fluid and put it together being very careful to not damage the gasket. Now that the diff is together I can see a little fluid leaking out where the two halves meet. The fluid is making its way onto the teeth where the belt goes.

Are you guys running silicon fluid in the rear diff? This minor leak has me concerned.
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Old 07-08-2005, 04:54 PM   #2
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Try asking in the R40 thread, its a very long thread, you can find a lot of answers there if you use the search this topic feature.


Obviously most of the guys in the thread have R40's.

Just incase you cant find it (Its the first thread on this page atm, here it is

http://rctech.net/forum/showthread.php?t=22061
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Old 07-08-2005, 05:12 PM   #3
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Quote:
Originally Posted by rossb
Hello - new member here. I have been running a Savage .26 for over a year and a RS4 18ss for about 4 months. I just got an R40 kit. I am installing this motor with an SG shaft. I am going to use it with this pipe. I am painting this body and this body.

My new R40ís build manual says to use grease in the rear diff but I figured that silicon fluid would be better. I filled the rear diff up with 5,000 fluid and put it together being very careful to not damage the gasket. Now that the diff is together I can see a little fluid leaking out where the two halves meet. The fluid is making its way onto the teeth where the belt goes.

Are you guys running silicon fluid in the rear diff? This minor leak has me concerned.
Please do go to the R40 thread -- but your short answer is -

Use " blue permatex" on the diff cases to stop them from leaking. Also - the grease depends on traction. For starters, don't use any oil. Just a light dap of grease to provide some lubrication. This will provide max rear traction in the rear until you need more power. Hope that helps and I'll see you in the R40 forum soon..
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