I do not have any Navtec hydraulic backstay adjuster
rebuilding experience, but did repair a Sailtec unit. Similar, but not completely the same.
Felt it would be no big deal since I already had all the tooling necessary and am quite competent with hydraulic components.
In the end it worked out, but spent pretty much what they would have charged me to rebuild
it anyway. Changed the piston, seals
, pump gauge, clevis fork, etc.... Even wasted one seal kit on a bad piston ($120).
thing is the guy who owns Sailtec warned me about having problems, but had to learn on my own. Glutton for punishment I guess.
One thing for sure the next one goes to Sailtec.