Section 1, To remove, Section 2 – Hale SMR-U User Manual

Page 8: Wearing ring maintenance, To refit, Suction tube and front wearing ring

Section 1

SUCTION TUBE AND FRONT WEARING RING

To Remove

To remove the suction tube, remove priming pipe and foam inductor (if fitted) from
RH side, and Tank Fill line (if fitted) from LH side of suction tube. Remove the M10
nuts, spring washers and plain washers to allow the withdrawal of suction tube and
front wearing ring if necessary. The front wearing ring has two identical O rings, one
of which is face mounted towards suction tube and the second being in a groove
behind its flange.

To Refit

Clean all flange faces and lightly grease new O rings before refitting.

Section 2

WEARING RING MAINTENANCE

Check the large internal diameter of the wearing ring in several places (see Fig 2-1).
If it exceeds dimension ‘A’ 140.60 mm (5.535 in) for WS 2010 and WS 3010 model
pumps, or 171.00 mm (6.732in) for WS 4010 models, at any point, the wearing ring
must be renewed.

Fig. 2-1

To Refit

Refitting is a reversal of the removal instructions. Use new O rings lightly greased
before refitting and should be fitted with diameter A towards the impeller.