MAINTENANCE MANUAL
GP/146/99. Issue 9. October 2005
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. If it should be
necessary to renew the fibre bush in the centre of the front wear ring, the old bush
should be drifted out and a new bush inserted by the use of the special mandrel PLA
2336. The end of the bush nearest the impeller must be flush with its housing.
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’, 140.6 mm for WT 2010 and WT 3010 model pumps, or
171.1 mm for WT 4010 and 187.6mm for WT6010, at any point, the wearing ring
must be renewed.
A
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.
©Hale Products Europe LTD, Warwick
GP/146/99
WTmaint - Issue9. 10-2005October 2005
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