Gear Pump Rotation Change

How to change from clockwise rotation to ant-clockwise rotation OR vice versa.

1. Loosen and withdraw screws, remove front flange, keeping rear end cover on the pump body.

2. Remove drive shaft gear and bushing from the body.
3. Now mark the position on the body using a felt pen.

4. Remove drive gear from the body and refit it in to the hole where the drive shaft gear was fitted

5. Remove the drive shaft gear from the bushing already removed.

6. Fit the drive gear back in to the hole where the drive gear was fitted (lower position in sketch).

7. Refit bushing in to the pump body carefully, making sure the bushing is fitted in exactly the same position at it was in the beginning (using felt pen marks).

8. Rotate and refit flange 180°.

9. Insert and tighten screws to the recommended torque (ensure that gears turn as you tighten the body bolts).

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