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I recently came by a power steer setup that I wish to install on my HK. The Ram or Cylinder rod has some rust spots and needs to be replaced. Are these Rams serviceable? My half hearted attempt so far would suggest that the rod cant be removed.
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You would find this type of ram is assembled and welded and ordinarily not servicable. It can be done, but it would require setting up in a lathe chuck and using a parting tool on the welded end to break through. The end cap will be a machined shoulder, that is pressed into the cylinder body. Once seperated the piston rod can be dismantled from the piston.
If the rod is pitted, it can be metal sprayed to repair it, or have a machine shop maunufacture a new rod using R4 or Stainless 440 turned up and cylindrical ground to size. Always replace the seals once opened up.
Best bet is to take it a hydraulic repair shop and let them advise on the type of repair.
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I served my time as a fitter and turner repairing hydraulics its basically as ozchevy says but im not sure why you would use a stainless? im not to familur with power steering cylinders(rams live on a farm)but on normal hydraulics we used an induction hardened chrome bar which come pre-ground to a nominal size or leave the whole cylinder assembled and do a grind then hardchrome it then regrind to size. if it was pitted even after a pre-grind we used a stainless wire held under a spot welder to fill the hole and then re chrome. metal spraying was always to ruff for the seals in hydraulics. As ozchevy said most hydraulic shops can help you out.
Havent you learnt anything from that guy that gives sermons at church?...Captain whats his name. |
Havent you learnt anything from that guy that gives sermons at church?...Captain whats his name. |
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Hi bundy,
I suggested 440 grade Stainless because it has a high Nickle/Chromium content. Metal spray up has come along way from the days of early and quite crude application. Ive seen some really good results of late that would not indicate any malfunctions on seals.
Cylinders that are of a welded body design are generally better quality and able to be made to fit into tighter areas. Ive made many over the years, including multi stage telescopic type.
Great to see another precision machinist on here, I always like to talk shop with other old school tradies that are used to repairing things like this, instead of this throw away society that exist today.
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Rank: Member
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Thanks for your responses guys.
So it looks like, for a mug like me whos not either a metallurgist or a fitter & turner, I cant service the cylinder myself. I would have to take it to a hydraulics shop or similar.
So, now looking at alternatives ..........
I compared the cylinder to one on a 75 Corvette. It "looks" exactly the same, same length, hydraulic fittings in the same place etc.
Any thoughts on fitting a LHD cylinder to a RHD car.
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If the stroke length and cylinder volume is the same, then you shouldnt have a problem.
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Are there any part/serial numbers on the thing?
If so, try googling it (has worked for me)
Or since more than a few parts will interchange across the Pacific, how about joining a Corvette forum and asking their gurus. I have asked obscure questions re gearbox paint colours for model building, most people are willing to help.
HTH
Webby
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Attn camry drivers. The accelerator is the skinny pedal on the right. |
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