Draining a steering gear box

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Poppy 87

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I've never seen a drain plug on a GM steering gear. Drain pan beneath, disconnect hoses, cycle steering full travel each direction several times. Not sure of your goal, but you could flush it by unhook 1 line and introduce new fluid in the other port and cycle steering as well.
 

PrairieDrifter

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I would do the second option so you don't run anything dry. Flush the fluid out by shoving the hose in a big bottle of new fluid. If you're trying to do a repair you'll just have to make a mess lol, unless you're taking it off the frame.
 

1987 GMC Jimmy

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Yeah, evacuate PS reservoir, catch what drips out of the return, hope for the best.
 

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