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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Watch out when you grease those All Balls bearings
Post Info TOPIC: Watch out when you grease those All Balls bearings
Sprok


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Watch out when you grease those All Balls bearings
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I contacted All Balls about the grease they use in their bearings and their response was:

From: Tech
Sent: Monday, February 29, 2016 3:53 PM
To: Helen Turner
Subject: Re: Contact Form

Our bearings use Chevron SRI Grease NLGI 2. I am not sure it is compatible with Redline CV-2 grease.

 

I looked up the datasheet and found that the SRI Grease 2 uses a polyurea thickener. Looking up compatibility information, polyurea seems to be not compatible with any other thickener and some times not even other polyurea thickeners. I contacted Chevron specifically about this grease and compatibility with a calcium sulfonate thickener (eg. Redline CV-2) and the response was:

Thank you for your inquiry. However, polyurea based thickeners are not compatible with calcium sulfonate thickeners.

Regards,
Clay
Lubetek Engineer

To me that says it might not be compatible with ANY other thickener. What this means is when you go to pack those new All Balls bearings you should probably only use that same Chevron SRI grease 2. Incompatibility can make the grease loose its protection ability. Oops!

Now personally for the needle bearings I drop them in clean kerosene and remove all the grease they come with. Then I clean off the kerosene and repack with my grease of choice. For wheel bearings I remove the seals then do the same (or sometimes I just leave whatever is in there because it's always risky to remove those seals). If I'm repacking old bearings, unless it's grease I put in then I make sure to remove all the old grease before putting in new stuff.

This is especially important for the needle bearings because the instructions say to pack grease in them during install and I doubt most people use the Chevron stuff.



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ttboof


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Thanks for the info.  might be on to somthing there.  ive put two sets in and just nursing this one but will need a third shortly 

the seals seem ok i use a good water proof grease when i pull it down its just mush 

so its a good scrub in kero and a pack of the good stuff and see how it gies next time.  ive had the same happen on other bikes with allballs kts sem ok but just dont last 



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BM Steve


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So Les what specific grease do you use I can get in Aus?

I would have thought just general purpose wheel bearing grease would do ?

 



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2004 TTR250 - Highway Dirtbike Hand Guards, 38mm Bar Risers, D606 Front & Rear, Opened up Airbox with Twin Air Filter, Re-jetted Carby, B+B Bash Plate & Frame Guards, DIY 3mm Alloy Tail Tidy, 14/47 Gearing.

 
ttboof


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I use a Nulon waterproof grese its a heavy duty grease good for marine and general purpose 



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peteBLUEttr


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Silkolene Pro RG2 grease is good gear www.opieoils.co.uk/p-824-silkolene-pro-rg2-racing-grease.aspx

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Pete. South Somerset, England.
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