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  1. #1

    Join Date
    Apr 2000
    Posts
    35
    Location
    California
    Tractor
    Kubota B7500/LA302 loader/B4672 backhoe

    Default Rust on hydraulic rods

    Can anyone tell me the proper approach to rust on the cylinder rods of hydraulic cylinders that have been exposed to weather? Is it better to use rust remover and/or steel wool or simply to leave them be and let the roughened surface rub on the seals? No, this isn't my kubota; it's my 1948 D2 Cat.
    Ed


  2. #2
    Silver Member
    Join Date
    Aug 2000
    Posts
    210
    Location
    Louisa, Virginia
    Tractor
    John Deere 790

    Default Re: Rust on hydraulic rods

    Question - is the rust surface or is the rod pitted? I have repaired pitted rods by removing the loose rust with my dremel tool, then using a rust converter on whats left. Then filled the pits with epoxy and leveled and polished the epoxy to rod contour. We also had to replace the seals as they had fallen apart. I expect that your seals will need replacing also. Hope this helps.


  3. #3

    Join Date
    Jan 2001
    Posts
    122
    Tractor
    TC45D

    Default Re: Rust on hydraulic rods

    EBS

    You should remove as much as possible - as any rough rust surfaces running over the cylinder packing or seals will eat them up in a hurry. Then you will have no choice but to recondition the rods & replace the seals. Hopefully yours aren't pitted too bad. Any inclusions typically won't hurt the seals or packing, however, they do offer small spots for possible leaks or oil consumption. I would soak the rust down with a good rust penitrant or diesel fuel for a while before polishing it off. Saves elbow grease. Be careful not to use strong penatrants near the seals though as some of them tend to break down rubber. :-( Good luck.

    Troy


  4. #4
    Gold Member
    Join Date
    Apr 2000
    Posts
    370
    Location
    northern calif.
    Tractor
    JD-970

    Default Re: Rust on hydraulic rods

    As a rust preventive rub down exposed hydraulic ram shafts with chain saw bar oil. It sticks like the dickens and will not drop off.

    later,
    george


  5. #5

    Join Date
    Apr 2000
    Posts
    35
    Location
    California
    Tractor
    Kubota B7500/LA302 loader/B4672 backhoe

    Default Re: Rust on hydraulic rods

    Thanks, guys. Good suggestions.
    Ed


  6. #6
    Super Member
    Join Date
    Dec 2000
    Posts
    6,737
    Tractor
    JD 8320 MFWD, JD 6415 MFWD, FEL, and cab, John Deere MFWD 4600, John Deere 4020, John Deere 4430, John Deere 455 mower, Deutz, and Gehl 4610 perkins skidsteer

    Default Re: Rust on hydraulic rods

    I use emory cloth and then clean the rust debris off with brake cleaner and then lubricate them with a rag that has been soaked and wrung out in gear oil. I make sure not to get any of the cleaner down into the seal area though.


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