BJM Pumps JX SERIES SIDE DISCHARGE Electric Submersible Pumps - Manual (Page 16)

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8) Remove the inspection screw for the oil
chamber (pos#50-08). Pour out a small
sample of the oil. If it is milky white, or
contains water, then the oil and
possible, the mechanical seal, should
be changed. If an oil change is needed:
9) Remove the screws that hold the oil
chamber cover in place & remove the
oil.
10) Replace the mechanical seal if
necessary.
11) Replace the oil.
12) Assemble the pump.