Review on Efficient DeWalt D55155 Compressor Regulator Repair Kit for Replacement & Repair by Kevin Brianne

Too bad you have to replace the entire inner workings of the regulator when the only defective part is the black plastic part in the kit. And that in 90% of the cases. This item could not have cost more than $1 to make and should not have sold for more than $3 if all were fair. But since you have to buy the whole kit, you can also replace all parts. You have already paid them. The instruction is basically a picture with the order in which the parts should be assembled. Follow this and it's a pretty easy fix. You will also need a Torx T-10 screwdriver to remove the screw that secures the regulator cover.