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Old 04-23-2011, 02:21 AM   #1
czowner   czowner is offline
 
Join Date: Sep 2006
Location: North East England
Posts: 313
USD fork oil seal size?

Does anybody know the size of a USD fork oil seal? One of mine has suddenly started to leak big style.

Jonathan.


 
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Old 04-23-2011, 02:35 AM   #2
SpudRider   SpudRider is offline
 
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Re: USD fork oil seal size?

Quote:
Originally Posted by czowner
Does anybody know the size of a USD fork oil seal? One of mine has suddenly started to leak big style.

Jonathan.
Fork oil seals come in a wide variety of sizes. Please remind us what motorcycle you own.

If all else fails, you can slide the dust wiper down, and measure it. The dimensions of the dust wiper will frequently allow you to identify the dimensions of the oil seal.

Also, I suggest you try cleaning your fork oil seals. Sometimes cleaning the oil seal will remove a speck of grit, and stop the leak. You can use a "Seal Mate," a piece of 35mm film negative, a feeler gauge, or a paper business card to clean the oil seal.

http://www.mxboards.com/forums/viewtopic.php?t=19
http://www.amazon.com/Motion-Pro-Sea.../dp/B0039LDF4A

Spud
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Old 04-23-2011, 09:16 AM   #3
czowner   czowner is offline
 
Join Date: Sep 2006
Location: North East England
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Apologies, I was in a bit of a rush earlier. To give the bike it's full title it's a Hongdou MD250GY. I've had a look at the seal and can't see any size visible, I'd take it to bits and pop down to the bearing suppliers but I already have the car in bits, and as it's 20 years old some parts are taking a bit of finding. As a stop gap I'll put some thicker oil in the forks and set about it when the car's fixed. I don't think cleaning will cure it, it's now done over 32k km and I think it will be due a new set.

Jonathan.


 
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