roof gaffa
New Member
As title...it has got worse over the last 6 months so after it hit the low teens i thought ide have a look. Took the bottom cover off the pump and dropped the guts finding scoring on the cover,also found 2 pump gaskets in place..then i moved on to the relief valve which i cleaned and refitted with a couple of washers behind the spring for good measure.The cover i took a thou off the face with my miller just enough to clean and return it to true flat,checked the gears which were within specs and nailed it back together with a single gasket took the dissy out and biult up the pressure with a modified dissy stem and drill,only took a min so the packing with vasoline worked well. Re-fitted dissy and fired the old girl up...hey presto 50 psi and a nice drop down to 40 at 3000 and 25 psi at idle so ime happy at the result for the price of a pump gasket...heres a pic of the cover after i took it off
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