need shock info

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need shock info

Postby bikesRfun » Fri Jan 13, 2017 9:41 am

I have a Shock Works NH series rear shock that needs new rubber seals I guess, because it's blowing it's fluid all over when I ride. I didn't find any info on the web except for its weight.
I would like to know what the recommended fluid and amount is. Also part # for rubber seal, which seems to be very stubborn I, coming out.
This is my first attempt at fixing a rear shock.
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Re: need shock info

Postby NYMXer » Sat Jan 14, 2017 7:04 am

I tried to search under the brand name ad very little came up. Maybe you could find a way to contact the distributor or manufacturer, if not... you can get a better air shock at Amazon for around $80 brand new.
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Re: need shock info

Postby Tomcat65 » Sat Jan 14, 2017 8:52 am

Suspension and fork oil is available from Fox, RockShox, and most other motorcycle brand and big oil brands.. 10wt looks like the most common recommended among bicycle suspensions. All of these types of suspensions require service at some point, and the seals are part of the service.
As far as exact amounts of fluid, the manufacturer should provide that, but since there is almost No information listed about these shocks, you might have to experiment with it. You definitely want enough to keep the seals bathed in oil constantly. So, if I was doing the rebuld, I'd reassemble it without the spring and by hand, push and pull it through it's length of travel, listening for bubbles and/or stalls. These inexpensive shocks are basically oil damped, fill it a little at a time until it squishes out the top when you reassemble. Make sure the valving is working and that the oil can pass through the jets or other damping passages without interference. That restricted flow of the oil from one side of the piston to the other, is your total damping on a low cost shock. Some shock designs are infinitely complicated, but the Shock works NH looks like a very basic oil damper, and it could be a case of a slightly smaller piston, passing through a slightly larger cylinder, with seals to keep it from pulling the oil out on rebound. So there might not be any fancy jets or other drilling to bother with.

Don't overthink a small project like a budget shock rebuild, Make sure it's clean, and if you can get the manufacturer's recommended oil wt, that would be good, because different wt oil could affect the feel, but most likely will not damage the suspension
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Re: need shock info

Postby bikesRfun » Sat Jan 14, 2017 4:05 pm

NYMXer wrote:I tried to search under the brand name ad very little came up. Maybe you could find a way to contact the distributor or manufacturer, if not... you can get a better air shock at Amazon for around $80 brand new.


Thanks for looking. Hopefully the seals will be a lot less than $80
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Re: need shock info

Postby bikesRfun » Sat Jan 14, 2017 4:14 pm

Tomcat65,
Thanks for that advice. I'll post what I end up doing.
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