Q Discharge pump stiff to operate
This is most often due to the bucket washers (part 51) being oversize, expanding or drying-out, when not used for a period.  When new washers are supplied the tolerance is oversize to allow for any wear on the cylinder of older toilets.  If the toilet is not used for a while or if oil is taken into the pump it can cause the washers to expand.  All of these reasons mean the frictional resistance between the washer and the side of the cylinder is too great making it very difficult to pump.  In all cases it will be necessary to take the piston assembly out of the pump and take a skim off of the outer circumference of the washers using emery paper or a file.  When fitting new washers they should be tested to see the pump will work freely before everything is re-assembled.  The washers barely need to touch the side of the cylinder, and there should be an easy movement on the pump when operated. Do not over tighten the piston locking ring when re assembling.

Q Top Gland of pump/s leaks
A Inlet/discharge water passing gland seal - Replace "O" ring and/or re-pack with gland packing. Piston rod worn - Replace. Gland nuts and/or pump tops worn - Replace.

Q Flushing pump loses prime
A Bucket washer worn - Replace. Lower valve worn - Replace.
Note - (To re-prime, apply 10/12 VERY RAPID strokes of handle or remove nut on connection between wheel control valve & flush pump and manually fill to prime).

Q Bowl backfills with water
A Could be filling from discharge side due to faulty lower "clack valve" - Try to free and re-seat, if this does not work, replace. Safety wheel control valve not seating correctly - Replace.

Q Scale build-up in pump/discharge pipe.
A Caused by chemical reaction with minerals in water - clear from pipe work by removing cylinder and soak in 50/50 caustic soda solution. 


Copyright 2001 Blakes Lavac Taylors
Last modified: August 26, 2004