Spent three hours trying to get a stuck hydraulic fitting loose on a dredge pump in Galveston

The fitting was cross-threaded by the last crew and just would not budge, even with a cheater bar and heat. We ended up having to cut it off and redo the whole manifold, which set the job back a full day. What's your go-to method for a fitting that's really seized up?

3 comments

3 Comments

viola_garcia563d ago

Ugh, cross-threading is the absolute worst, isn't it? I had a similar nightmare on a heat exchanger last year, where the previous guy must have used an impact wrench to put a brass fitting into steel. We tried everything, even a torch, and it just rounded off. Ended up drilling it out, which felt like it took forever (and was not fun at all). Sometimes you just have to admit defeat and cut your losses, even if it wrecks the schedule.

white.keith3d ago

Used to swear by heat and bigger hammers for everything. After wrecking a couple manifolds on a pressure washer rig, I started hitting seized fittings with a mix of penetrating oil and a sharp crack from a hammer on the wrench handle. It breaks the rust bond without twisting everything to hell. Still have to cut sometimes, but this saves the part more often than not.

carr.cora3d ago

My old foreman called that the "shock and soak" method. He'd tap the wrench with a brass hammer while the oil sat, saying the vibration helps it creep into the threads. Saved a ton of hydraulic fittings on our farm equipment that way.