Pulsafeeder Pulsar Shadow - Manual (Page 34)

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7.9 Cover Assembly
7.9.1 Removal & Reinstallation
Figure 23
The hand knob linkage employs a slip type coupling which can be reassembled in either of two
rotational orientations 180
° apart from one another: therefore, the original orientation must be
retained for reassembly so that pump calibration is retained.
Use the following procedure to remove the cover assembly:
1. Adjust the stroke length until the dial indicator is set at the zero stroke setting.
Adjustment is easier with the drive motor running. Allow the locking mechanism to engage to the
nearest détente.
2. Disconnect the power source to the drive motor.
3. Remove the cover screws.
4. Using care not to rotate the adjustment shaft, remove the cover vertically from the eccentric box.
Use the following procedure to reinstall the cover assembly:
1. Rotate the stroke cam screw clockwise until the slider cam is in a full upward position.
2. Verify that the cover dial indicates the zero stroke setting.
3. Using care not to disturb the adjustment shaft, install the cover assembly, engaging the drive
coupling.
4. Replace the cover bolts, and tighten to 20-24 In-lb (225 – 270 N-cm)..
5. Press the adjustment knob down and rotate it clockwise until it stops.
Adjustment is easier with the drive motor running.
6. Verify that the cover dial indicates the zero stroke setting as before; if so, reinstallation is complete
and if not, refer to step (7) below for realignment.
7. Loosen the screw in the center of the dial cover.
8. Adjust the dial cover to align the pointer with the “zero” mark.
9. Retighten the screw in the center of the dial cover.