ChinaRiders Forums - fork oil change

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ChinaRiders Forums (http://www.chinariders.net/index.php)

- Zongshen RX3 (http://www.chinariders.net/forumdisplay.php?f=136)

- - fork oil change (http://www.chinariders.net/showthread.php?t=14672)

Parker74

10-25-2015 04:55 PM

I actually pulled the forks off last nite to added 10W.
I poured them out first and measured how much oil was in each and both were at exactly 250cc's.

Put the same amount back in.

SpudRider

10-25-2015 10:34 PM

I didn't measure my used fork oil. However, I can testify my forks work much better with 330 ml of Mobil1 Synthetic ATF in each fork. :tup:

katflap

10-26-2015 10:59 AM

Quote:

Originally Posted by Parker74 (Post 195597)

I actually pulled the forks off last nite to added 10W.
I poured them out first and measured how much oil was in each and both were at exactly 250cc's.

Put the same amount back in.

Thanks for the feedback, parker :tup:

Have you noticed any difference since doing it.

I have now had chance to test mine and it feels much the same, perhaps a slight improvement. :)

katflap

10-26-2015 11:18 AM

Quote:

Originally Posted by SpudRider (Post 195610)

I didn't measure my used fork oil. However, I can testify my forks work much better with 330 ml of Mobil1 Synthetic ATF in each fork. :tup:

I'm sure a lot of people will notice a marked improvement as you have spud :tup:

But there maybe a few who wish to do a fork service etc. and maintain the original factory setup after a fork oil change.

I'm starting to wonder if this is possible with 330cc of oil no matter what the grade. :hmm:

:)

SpudRider

10-26-2015 01:27 PM

I didn't decide on 330 ml of for oil, myself. I merely followed the specification listed in the CSC maintenance tutorial for fork service. ;)

http://www.cscmotorcycles.com/Articles.asp?ID=263

I also know from seven years of experience studying, and working with Chinese motorcycles, that the forks are almost invariably low on oil as configured at the factory. ;) However, I do understand if someone wants to keep the same amount of fork oil as received from the factory. Everyone is free to configure his motorcycle exactly as he wishes. :)

Cyclone54

10-27-2015 01:02 PM

Quote:

Originally Posted by SpudRider (Post 184332)

Good for you. :tup: You are going to be very happy you replaced the stock fish oil in the forks with some legitimate, 10W fork oil. :)

Here is a link to the webpage containing the CSC maintenance tutorials. The RX3 Sticky Thread, located at the top of this forum, also contains a link to the CSC Tutorial page. ;)

http://api.viglink.com/api/click?for...rial%20Webpage

Other than fork oil, the most important item you will need is a very thin, 14mm wrench! This wrench must fit between the coils of the spring so you can hold the nut at the top of the damping rod to unscrew the fork cap. Otherwise, you will not be able to remove the fork cap.

http://ecx.images-amazon.com/images/I/21AO6XRIGUL.jpg

http://californiascooterco.com/blog/...s_0031-650.jpg.

I strongly suggest you acquire a very thin, 14mm wrench before you start this job. ;)

Is this a necessary step if all you are going to do is swap the oil??

SpudRider

10-27-2015 01:05 PM

A lot of oil is stored in the cartridge. If you want to get the oil out of the cartridge, yes, this step is necessary.

Cyclone54

10-27-2015 01:17 PM

Quote:

Originally Posted by SpudRider (Post 195769)

A lot of oil is stored in the cartridge. If you want to get the oil out of the cartridge, yes, this step is necessary.

Hmm, Parker 74 and I did his this past weekend and skipped that step and only got 250cc's out of each fork. Wondering if the cartridge was holding that extra 80cc's now.

Might have to do his all over again. Damn..

SpudRider

10-27-2015 01:27 PM

I'm sorry to bear the bad news, but I'm betting there is a lot of oil in the cartridges. Even if you don't get 330 cc of oil when you empty the cartridges, I still suggest you follow the CSC specification. ;)

Parker74

11-01-2015 10:11 PM

Thanks for the feedback! We pulled the forks back off today and after removeing the spring and pumping the internal shaft many times and pouring the old oil repeatedly I was able to get much more oil out of the forks.

Just about 330 cc's:yay:

The frontend feels much firmer and less dive when braking.

SpudRider

11-01-2015 10:24 PM

You're welcome. :)

You experience corroborates mine. I knew the forks would perform much better with 330 cc of heavier fork oil. ;)

Inroads

01-03-2017 11:32 AM

Anyone have new info on aftermarket fork springs ?

GSC	04-17-2017 02:01 PM

Just a quick note of thanks to CSC fork oil change tutorial and Spud.
It goes well when following directions; I think I put springs back rightside down?
Especially pleased with Spuds recommended 10wt oil, of Mobil 1 ATF syn.

SpudRider

04-17-2017 02:20 PM

Quote:

Originally Posted by GSC (Post 252140)

Thanks for your report and the kind words. ;)

AdventureDad

05-31-2017 11:11 PM

Just a question reviving an old post.... would changing the stock oil be a bad idea for me, as I weigh 165, but occasionally ride 2up. Also, would the Mobil 1 ATF or the lighter Valvoline ATF be better? Lastly, after reading this thread and tutorial, would I remove the spring and pump the forks until 330ml comes out, or it's empty? If i don't get 330ml's out, I would just replace with the amount removed.

Ive not done fork oil before.

Thanks all!

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