Maintenance
26
Fig 35
16. Screw the first diaphragm onto the thrust
tube, ensure thread is lubricated.
It is recommended that the thrust tube is held in a
vice using soft jaws to aid diaphragm fitting and
prevent damage to the thrust tube surface.
Fig 36
17. Before installing the thrust tube take note of
the bearing position within the tube.
Bearing stack should be closest to Air Valve
Fig 37
18. Install the diaphragm and thrust tube into the
main body of the pump.
Ensure that the thrust tube is inserted with the
bearings nearest to the air valve side of the pump
as shown in Fig 36.
Fig 38
19. Screw the second diaphragm onto the thrust
tube, ensure thread is lubricated.
20. Grip both diaphragms and tighten by hand.
21. Allow 5 minutes and re-tighten.
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