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Hyd pumps
I have not used a mule yet. Rear pump suspect. I have been using procedure described in maint manual by using 1 engine on for each pump. We have rebuild all actuators and replaced all hoses. System was bled with original pumps and use of a drill. Functioned normally. Rear was slow to cycle compared to front. It is an original 1965 pump. I had purchased the two pumps in question to replace my originals. One was good. One was not. Sent both in to qaa and got my surprise.
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GM Poland
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