Venting following hydraulic line replacement

[DaleM 753]

Hello, I have a 753 machine and am replacing the hydraulic hoses for the bucket lift arm and tilt cylinders. The hoses come up around from the engine compartment to the hinge area of the lift arms (somewhat of a high point here). What kind of venting do people do after replacing these hoses? Since the flow to the lift / tilt cylinders simply does a back/forth vs. a recirculation flow, I don't see the system dynamically venting. I was planning to attach hoses tight at bottom end and keep the top fittings a touch loose, start the machine and work lift / tilt till I get oil leaking out the top hose fittings, then tighten. Is this adequate? Better way to vent? Appreciate any tips / advice. Thanks, Dale.

 

[brdgbldr]

Hello, I have a 753 machine and am replacing the hydraulic hoses for the bucket lift arm and tilt cylinders. The hoses come up around from the engine compartment to the hinge area of the lift arms (somewhat of a high point here). What kind of venting do people do after replacing these hoses? Since the flow to the lift / tilt cylinders simply does a back/forth vs. a recirculation flow, I don't see the system dynamically venting. I was planning to attach hoses tight at bottom end and keep the top fittings a touch loose, start the machine and work lift / tilt till I get oil leaking out the top hose fittings, then tighten. Is this adequate? Better way to vent? Appreciate any tips / advice. Thanks, Dale.

Bobcats are self venting. Just fill the tank and slowly and gently move everything a little at a time at first then to its limits a few times. Then check the fluid level, fill back up and repeat until no air is in the tank.

You may need to wait a little while before refilling the tank to let the air bubbles dissipate.

 

[Markle]

Ditto what brdgbldr wrote. Might take some time to cycle air through. Lift, tilt, lift, tilt repeat cycles.

 

[DaleM 753]

Thanks guys. I had same feedback from some others also.