Rear shock repair

YZ125H1
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YZ125H1
Edited Date/Time 11/8/2014 4:43pm
Just tore apart my 96 YZ125 and the rear suspension is leaking air. The manual says do not try to work on it, but if you empty all the air it should be fine? I do not mind buying a new one or having it repaired just wonder if it is possible to do the work myself?
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mmain62
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mmain62 11/4/2014 7:54am
11/4/2014 7:54am
Your basic shock rebuild should be fine to do by yourself the only thing you may have to have someone do is recharge the bladder with nitrogen I think it is. other than that bleed it all off and tear it apart like the manual shows you,if it does that is. If this link works it should tell you everything . http://www.youtube.com/watch?v=0_InEnom2ec if it doesnt then go to youtube and find rockymountainatvmc youtube channel and you should find it there.
Good Luck
Paw Paw 271
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Paw Paw 271 11/4/2014 7:57am
11/4/2014 7:57am
Unless you have the proper tools and the knowledge plus the nitrogen I would not try to work on it. It only cost about $100 to have it serviced. If the seals are bad then this will add dollars to the cost, but not much.

FYI: There no air in the shock, but rather nitrogen in a blater keep the oil from foaming. When the oil foams, your dampening goes away.

Paw Paw
pete24
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pete24 11/4/2014 8:02am
11/4/2014 8:02am
if some one comes to me with a shock that they worked on and asks me to charge it, the answer is no, if i didnt put it together i aint charging it and having it come apart, you will find this with a lot of shops so send it out and have it fixed
YZ125H1
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YZ125H1 11/4/2014 9:25am
11/4/2014 9:25am Edited Date/Time 11/4/2014 9:32am
Thanks for the replies. Filled it twice with compressed air in the past. Probably going to just let the pros handle it.

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Aceofspades 11/4/2014 8:18pm
11/4/2014 8:18pm
Rebuilding a shock isn't hard except for properly grinding the peen from the retaining nut. You just have to have enough courage to try it if you are handy with tools and have a decent mechanical aptitude. I was scared to death the first time I tried it but now I disassemble and service my shocks about three time a year. Same with forks.
YZ125H1
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YZ125H1 11/6/2014 6:49am
11/6/2014 6:49am Edited Date/Time 11/6/2014 6:55am
Aceofspades wrote:
Rebuilding a shock isn't hard except for properly grinding the peen from the retaining nut. You just have to have enough courage to try it if...
Rebuilding a shock isn't hard except for properly grinding the peen from the retaining nut. You just have to have enough courage to try it if you are handy with tools and have a decent mechanical aptitude. I was scared to death the first time I tried it but now I disassemble and service my shocks about three time a year. Same with forks.
I think I'll give it a try does not look too hard from watching the rockymountainatvmc video. I'm already about $500 into my rebuild trying not to spend a fortune on her.

@DJFMXPRO I found a rebuild/service kit for my model year beats trying to order each part individually.
slipdog
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slipdog 11/6/2014 9:07am
11/6/2014 9:07am
YZ125H1 wrote:
I think I'll give it a try does not look too hard from watching the rockymountainatvmc video. I'm already about $500 into my rebuild trying not...
I think I'll give it a try does not look too hard from watching the rockymountainatvmc video. I'm already about $500 into my rebuild trying not to spend a fortune on her.

@DJFMXPRO I found a rebuild/service kit for my model year beats trying to order each part individually.
Do not use aftermarket kits like Pivot Works they are junk. The only complete rebuild kit you would want to use is genuine KYB parts from Technical Touch that can be ordered through the Tucker Rocky catalog at any parts shop.
lumpy790
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lumpy790 11/7/2014 2:25pm
11/7/2014 2:25pm
Please define ... leaked the air out.
Aceofspades 11/7/2014 9:58pm
11/7/2014 9:58pm
I used an aftermarket rebuild kit on my rm250 and it worked fine. However, I'm just a trail rider. Those cheap kits may not cut it if you need total precision or plan to race.
lumpy790
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lumpy790 11/8/2014 9:33am
11/8/2014 9:33am
I tried an aftermarket seal head once and to reduce stiction the bushing in the seal head was much looser than a OEM seal head.
YZ125H1
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YZ125H1 11/8/2014 3:46pm
11/8/2014 3:46pm Edited Date/Time 11/8/2014 3:58pm
Well the shock was filled with air again after it was off the bike and put some soap/water and it was leaking near the bladder. It would hold around 20psi, but not what the book calls for. Took the shock apart today could not find anything wrong with the bladder. The bike is a 96 I find it hard to believe it could hold 100+ psi for years on end without some small leak. I usually go with OEM on seals and will be buying the KYB service kit for the suspension. Before we even started filling it with compressed air it was very low on pressure one year.
Factor E
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Factor E 11/8/2014 4:43pm
11/8/2014 4:43pm
U should only use compressed air to hold shape of bladder while putting shock together. After bleeding release air and put Nitrogen, should be 150psi. If the leak is around cap, replace bladder.

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