Repair of antique Ritter dental chair

[David Kendrick]

Need advice on hydraulic repair of antique Ritter dental chair.

[sean]

Whats your problem. What model chair is it?

[EZECHIAL ADAMS]

I am not exactly sure I believe it is a 1920 Ritter dental chair
I only have the bottom. I have used it for the past 2 decades. It recently started leaking hydraulic oil. Not to sure where from.

[Robert Failing]

1939 Ritter MB dental chair. Motor was humming but when took apart pump and motor turn freely so I think I need to follow the instruction book and open air vent at top of cylinder as well as the pump vent to get the oil to flow. Any ideas. Has not been run in 30 years, Rest of chair is fine.
Robert

[Larry James]

Hello I have a vintage Ritter Model B Motor chair and it is low on fluid, and don’t know what fluid it takes for the hydraulics? any help would be great, Thank you,

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