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I really need some help , guys...My steering won't hold air pressure for more than a couple of hours, I have tried to locate the leak using soapy water on all the fittings and connections but no luck. The labels on the reservoir are so deteriorated I can't read anything except the arrow that points to the site glass and the capacity of 1 qt. I can't find out what model it is so that I could try to find replacement parts. Does anyone have any info on this unit, I would greatly appreciate any help at all. Thank you in advance.