Hydraulic cylinder rebuild

[Captndrydock]

"If there are pumps on Ebay and they are Chines made, do not buy them!
Starters for Chrysler/Force and made in China are crap, but cheap."
Trouble is just about anything new is built in China.
If it's rebuildable??? Then use OEM or Factory parts from a Mercury dealer.
Those parts are probably Chinese too but held to a higher standard(better parts),

After a little digging and asking AI, sigh, yes...China parts can be both good and bad quality. The better quality parts have ISO 9001 certification. So I asked it to search for ISO 9001 certification for DB Electric and apparently they use the higher quality parts.

Here's what AI "said":

DB Electrical has stated that it uses suppliers with ISO 9001 certification to source its parts, including seals and O-rings. The company specializes in automotive and equipment electrical parts and monitors the quality of its products to meet or exceed OEM specifications.

 

[Captndrydock]

View attachment 410679View attachment 410679
getting off the end caps (not easy)
View attachment 410680
taking apart the piston and ram rod from a set of freshwater used cylinders I bought to replace all the seals
View attachment 410681
original cylinders with re-done seals on freshwater used internal parts....
PS
the original OMC seals lasted 36 years before they started to leak!

Thanks for the pics. 36 years, hmm... I must say, I have tilt cylinders that don't leak, but they're about 45 years old. I assumed they would be leaking soon after I started using them, but I do wonder if they are deteriorated or not. The motors they came from seem to be low hour motors.