Things to note when installing a Johnson CM30 pump.

CAUTION: DO NOT perform this procedure if the coolant is warm or hot. It WILL burn you.

1. Electrical connection has to be spliced. There is no plug on the CM30. I cut about half the copper off the stripped end of the wire, tinned (soldered) them and then pushed them into the existing factory plug as if they were pins. Then the whole assembly was wrapped in gaffer's tape.

2. When disconnecting the hoses from the factory pump, have a large catch bowl below so as not to loose any fluid. It will drain about 1 quart or so before stopping. (or at least slowing down to a dribble).

3. You will need a piece or two of radiator hose to slip over the Johnson CM30 pump housing to get it snug in the rubber mounting from the factory pump. I recommend you go to the auto parts store ahead of time and get one piece of hose that has it's inner diameter the same size. You can then cut one piece to slip over the casing, and another to split lengthwise and put over the first. this should make the factory rubber mounting VERY snug. I found I had an old radiator hose that had an expanded end (molded) and so the two different sizes were perfect.

4. The inlet and outlet fittings on the CM30 are not 'ribbed' like the factory pump. I recommend you get two regular (screw type) hose clamps to put these hoses back on. The outlet (pressure) side of mine began to leak with the factory clamps installed. The inlet seemed fine, but why tempt fate.

Hope that helps.
Cheers!