I found some damage to some rigid segments of steel hydraulic tubing (rust pitting that looks like it just barely penetrated from spot-abrasion in some cases, physical-damage kinking in others) and bronze-brazed to repair them so they at least "look good," but I'd like to do some down-and-dirty hydro testing of those segments before I go through the acrobatics of installing them, perhaps only then to find there's still some problem. I plan to bleed all air from segments, and use either:
1) a porta-power with ATF, or
2) a grease-gun with water
I'm thinking I'll test to 1.25x some typical working pressure, but don't have any specs to correspond to my machine in particular, since it's a gray-market CAT (307SSR). Hydraulic tubing segments are 7/8", none longer than 3', with lots of bends, and -8 o-ring face-seals at both ends. I still need to come up with adapter fittings to go from porta-power/grease-gun to ORFS and a gauge somewhere, and also probably have to wait for that pressure-gauge to get here since my max on-hand gauge is just 3000psi.
Any do's/don'ts regarding the above? Would 5000psi x 1.25 be reasonable?
Any particular safety concerns? I'm thinking the obvious measures apply: keep a little distance (porta-power hose is only so long...), wear safety-glasses, place test segment in drum or similar to keep any mess contained. My thinking is that if something fails, it's going to present as a brief jet or rapid weeping of the ATF, and not as anything spectacular or worthy of an epic-fail video, but I'm interested to know what happens from the perspective of anyone who has been through this.
Thanks - Dave
1) a porta-power with ATF, or
2) a grease-gun with water
I'm thinking I'll test to 1.25x some typical working pressure, but don't have any specs to correspond to my machine in particular, since it's a gray-market CAT (307SSR). Hydraulic tubing segments are 7/8", none longer than 3', with lots of bends, and -8 o-ring face-seals at both ends. I still need to come up with adapter fittings to go from porta-power/grease-gun to ORFS and a gauge somewhere, and also probably have to wait for that pressure-gauge to get here since my max on-hand gauge is just 3000psi.
Any do's/don'ts regarding the above? Would 5000psi x 1.25 be reasonable?
Any particular safety concerns? I'm thinking the obvious measures apply: keep a little distance (porta-power hose is only so long...), wear safety-glasses, place test segment in drum or similar to keep any mess contained. My thinking is that if something fails, it's going to present as a brief jet or rapid weeping of the ATF, and not as anything spectacular or worthy of an epic-fail video, but I'm interested to know what happens from the perspective of anyone who has been through this.
Thanks - Dave