Step 1
Keep the pump driver free of debris so the internal parts operate efficiently and have less wear.
Step 2
Refer to the parts list and schematic and use the repair kit to disassemble the driver. The driver consists of a shaft, piston, cylinder, compression springs, retainer, plug with quick disconnect, and several o-rings and retainer rings.
Step 3
Inspect the parts for wear as you remove them. Place the parts in order to aid in re-assembly. When you see the part that is cracked or worn, consult the parts list to order the replacement part. Once you have the new part or parts re-assemble the driver according to the schematic in the kit, making sure all seals are tight and the new parts are lubricated.