Hydraulic cylinder rebuild

Captndrydock said:

I'm looking for suggestions on how to get a trim/tilt hydraulic cylinder re conditioned. I can attempt to do it myself. I have the rebuild kit, but finding the right sized wrench is proving to be a challenge. I cobbled together a makeshift pin wrench but I can't get the nut to budge. I'm wondering if it's more worth while to have a hydraulic repair shop take care of it.

Any suggestions are appreciated!

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Mc Tool said:

Pin wrenches are one of them things that need to be reasonably stout , any flex will work against you , and you also need to clamp / hold the cylinder really well . You may be better off trying to crack that nut before removing cylinder , and get a bit of garden hose , 2-3 inches long , slice it down one side and put it over the ram shaft coz you dont want any dings it that when the wrench gets away on you
The nut will likely have an o ring around its circumference and they can "stick" . A bit of heat may help but I wouldnt want to get it much hotter than you can hold your hand on it .....so hot air gun rather than gas torch .

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Lou C said:

When I did mine, I heated the end of the cylinders with a heat gun but not that hot, because the hydraulic fluid inside is flammable! I left the cyls on the transom mount and had to use my full weight/strength to get the caps to budge. Was able to get both off of a salt water used and moored boat, so it CAN be done. Used a couple of BRP (OMC) rebuild kits for my 1988 Cobra.

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