I bought a repair kit for my old pump but it didn't help--so money down the drain. Then I bought the new pump close to the same size and amp usage from Amazon and I replaced the old tiny accumulator tank with a 2 gallon metal one from Home Depot. The new pump said it did not need an accumulator tank but I put one in anyway and it does seem to keep the pump from running for nighttime flushings. I installed it right side up and when I winterized, I just ran pink stuff in the system until it came out the faucets, no special work for the accumulator tank. There are some photos
here..