Disassemble The Pump - Graco SaniSpray HP 750 Repair Parts

Disassemble the Pump

1. Perform the Disconnect the Pump procedure,
page 7.
2. Unscrew the four tie bolts (7) and remove the intake
valve housing (6†).
3. Disassemble the intake valve. Note the position of
the ball stop pin (5†). Inspect the ball (4†) and seat
for nicks and scratches.
3A7945A
4. Remove the cylinder (2†) from the outlet housing
(1). Do not scratch or damage the polished inner
surface of the cylinder. Remove the o-rings (3*).
5. Loosen the packing nut (15). Pull the displacement
rod (8†) out the bottom of the outlet housing (1).
6. Inspect the polished inner surface of the cylinder
(2†) and the outer surface of the displacement rod
(8†) for scoring or scratches which can damage the
packings.
Repair
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