Is it OK to insert a bit of a water
pump rant here? I have a Universal engine with a Sherwood raw water pump
. How can anyone take such a profoundly simple piece of kit and turn it into a sadistic attack demon?
First, the bolts. Why on earth do the 7/16" heads have to be on the back of the pump? There is clearance on both sides. (Though not enough for a ratchet in back. Only a hex and room for 1/6 rotation.) The only possible explanation is that the designer
wanted my knuckles to suffer as a reminder that impeller changes are too important to be bloodless.
Second, the half moon shaped key. Is there actually a reason to make the key this shape and so prone to fall out other than to demonstrate that the bilge
under the engine needs cleaning
? And, once proven, does it need to fall out again. And again? OK, I cleaned.
Third, the bolts again. Stainless bolts into a bronze housing. No way those bolts are ever going to get cross-threaded. Especially when you're wrenching without visibility because the bolts are set up in back. (See one.) The only good thing is that I can use the excuse to use a through bolt with a nut and eliminate the challenges of wrenching from the back.
Oh, right. This is about getting the impeller into the housing. Lots of good suggestions that aren't Sherwood specific, but do eliminate one of the sources of bad language. [/rant]