Step 1
Remove the knob bolt. (or truss screw)
Step 2
Remove the filter cover and the filter.
Step 3
Remove the bolts from the four corners. Turn the pump up side down. Use 8.Omm each side wrench.
Step 4
According to the photo, use a screwdriver to pry open upper and lower housing. If it is difficult to remove it due to the heavily stuck internal packing, insert the tip of a screwdriver into the clearance between the exhaust nozzle and the upper housing. Remove the sound absorber. (60/80GJL)
Step 5
Remove the screws hold the chamber block. (4screws on each side.)
Step 6
Remove the L-tube from the casing nozzle.
Step 7
Remove one of the U-lock nut hold the diaphragm to the rod.
X20-50GJ-L : 5.5mm each side wrench.
X60-80GJ-L : 7mm each side wrench. Use the box driver to loosen (or tighten) the U-lock nut.
Step 8
Remove one of the diaphragm mounting blocks from the actuating rod and pull out the other diaphragm mounting block with the rod. Remove another U-lock nut and the diaphragm mounting block from the rod. This completes the chamber block removal procedure.
Step 1
Install a new diaphragm mounting block on the actuating rod. Set the actuating rod in line with groove and tighten U-lock nut. • Use new U-lock nut and washer only that come as replacement parts to prevent a damage of the pump.
Step 2
Insert the actuating rod in accordance with the gap of frame.
Step 3
Secure the diaphragm mounting block on other side and tighten with washer and U-lock nut using the box driver. Make sure the gaps between the actuating rod and electromagnet are even.
Step 4
Connect L-tube to the casing block and secure the casing with the screws. (4screws on each side) Install the casing block at the same way. Install the sound absorber. (60/80GJL).
Step 5
Place upper housing back on body. (Be extremely careful about the cord bushing.) If the pump makes an abnormal noise, this may be sign of improper positioning of the cord bushing. Tighten each of four bolts gradually and uniformly till they are firmly fastened. Set the pump back in upright position and replace the filter.
Step 6
Replace the filter. •Remove all dust that collected on pad.
If it is heavily soiled, use a neutral detergent to wash it, rinse it with water and dry it well out of direct sunlight before reinstalling.
Step 7
Place the filter cover back on properly.
Step 8
Place the filter cover back on properly.
