Post by karla48 on Dec 20, 2012 19:33:05 GMT -5
Fairly simple process, and materials needed:
tube of silicone gasket material
part of an old bicycle inner tube
hammer & small gasket punch set
scissors, pencil, and cardboard cereal box or equivalent
permanent black ink marker (pen tipped)
Use an old pump diapghram as a template, and turn it upside down onto the cardboard (you might make a couple carboard ones incase you need to make a correction), and trace the outline and holes the best you can. Takes scissors and cut out outline, and use 1/8, 3/16, & 1/2 hole punches to punch out traced holes. The 1/2 hole punch is to make a hole in the center of cardboard for the piston, just put a little pencil graphite on the center metal ring, and press it down on cardboard to make an outline, then punch it out. Now with everything removed from the body of the pump including the spring, position the cardboard template over the body, and make sure all the holes line up, adjust the template to make sure you get a perfect match. Now take a piece of bicycle inner tube, maybe about a 3 inch long piece, and split the inner tube, so opens to a flat piece of rubber. Now with the smoothest side of the inner tube facing down trace the cardboard template onto the rubber with the permanent marker pen, and similar to the cardboard cut the outline and punch the holes. You can also double check that the rubber gasket matches too. Now take your damaged diaphram, and cut around the piston leaving about 3/8 of the orginal material fastened to the piston, assuming there are no holes or cracks. Now very lightly smear silcone gasket maker onto the piston diaphram, and insert the piston thru the 1/2 hole in the center of the new gasket. (follow directions on tube, mine says to press together, and wait an hour, then firmly press together and wait 24 hours. It works great, and looks great and repairs your pump. After the first one it took me less than 5 minutes to make three more. I wish I could post some pictures!
tube of silicone gasket material
part of an old bicycle inner tube
hammer & small gasket punch set
scissors, pencil, and cardboard cereal box or equivalent
permanent black ink marker (pen tipped)
Use an old pump diapghram as a template, and turn it upside down onto the cardboard (you might make a couple carboard ones incase you need to make a correction), and trace the outline and holes the best you can. Takes scissors and cut out outline, and use 1/8, 3/16, & 1/2 hole punches to punch out traced holes. The 1/2 hole punch is to make a hole in the center of cardboard for the piston, just put a little pencil graphite on the center metal ring, and press it down on cardboard to make an outline, then punch it out. Now with everything removed from the body of the pump including the spring, position the cardboard template over the body, and make sure all the holes line up, adjust the template to make sure you get a perfect match. Now take a piece of bicycle inner tube, maybe about a 3 inch long piece, and split the inner tube, so opens to a flat piece of rubber. Now with the smoothest side of the inner tube facing down trace the cardboard template onto the rubber with the permanent marker pen, and similar to the cardboard cut the outline and punch the holes. You can also double check that the rubber gasket matches too. Now take your damaged diaphram, and cut around the piston leaving about 3/8 of the orginal material fastened to the piston, assuming there are no holes or cracks. Now very lightly smear silcone gasket maker onto the piston diaphram, and insert the piston thru the 1/2 hole in the center of the new gasket. (follow directions on tube, mine says to press together, and wait an hour, then firmly press together and wait 24 hours. It works great, and looks great and repairs your pump. After the first one it took me less than 5 minutes to make three more. I wish I could post some pictures!
Nothing like figuring out a way to make you own parts!!
