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D6 9U hydraulic cylinders

D6 9U hydraulic cylinders

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cjepplin
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Working to dry up our D6 9U hydraulic lift cylinders. It has the 25C2927 hydraulic control with the 8F1123 and 8F1124 cylinders(I believe). Was wondering if there is anyone offering reseal kits or if you have to buy everything individually from Cat. Thanks for all the help!!

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Sat, Jan 24, 2026 9:52 PM
Ray54
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I don't have the books for the hydraulics or blade so your numbers mean nothing to me. But I have repacked the Cat cylinders on the hardnose D6 blade.

I know the seal ring were referred to as chevron V packing rings by the guy that gave them to me. I believe the piston had standard o ring, but 30 years dulls the memory. So, it could be something else. But was in stock at the local hydraulic shop along with the wiper seal on the rod.

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Sun, Jan 25, 2026 10:25 PM
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