After 18 Years....Something New

I had the same problem with my pump. I did not go that route. I purchased new stainless bolts of the same diameter that were long enough to pass through the body. I use a flat waster, a lock washer, and a nut on the other side. I've never had a problem since.
 
Hmmm, won't work in my case. The serpentine pulley has to align with the rest of the pulleys, the extra hardware would put the pump out of alignment unless you were able to move the bracket forward.

The real issue is when you bolt down the plastic pump body, because of the impeller the pump body is not going to align perfectly which is logical since it needs to be eccentric to pump water. You have to side load the pump body to get the bolts to thread. However, when that happens the steel bolts are loaded to one side of the threaded hole. If they were steel on steel, no problem. Steel into aluminum is going to create fretting.
 
GeeBee, I was beached at tm8 all weekend with some friends. Towboat came buy and said they were looking for a houseboat that was stranded because they had sucked up ropes. The water was 80 degrees. I told the the towboat guy just jump in and cut the ropes. Oh no he said. I only tow. Saw it come by a little later on the hook.
 
Was it a green and white monster? About 80'?
 
I'm talking abut the plastic body with the inlet and outlet on one side, and it bolts to the housing on the other side. The bolts and nuts do nothing to cause an offset as they are all on the outside of the bracket. If I remember, two or three of the five bolts were already threaded through the bracket and served a dual purpose of holding the body and housing together and hanging the bracket. I just did the same with the other ones. If i remember, I'll take a picture the next time I'm on the boat.
 
quote:
Originally posted by GeeBee

Hmmm, won't work in my case. The serpentine pulley has to align with the rest of the pulleys, the extra hardware would put the pump out of alignment unless you were able to move the bracket forward.

The real issue is when you bolt down the plastic pump body, because of the impeller the pump body is not going to align perfectly which is logical since it needs to be eccentric to pump water. You have to side load the pump body to get the bolts to thread. However, when that happens the steel bolts are loaded to one side of the threaded hole. If they were steel on steel, no problem. Steel into aluminum is going to create fretting.

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No argument about that pump being a terrible and fairly fragile design - but the next time you're worried about steel fasteners in aluminum on the boat, find yourself some Tef-Gel. The stuff works even better than advertised. A little bit goes a LONG way (I've been on the same tube since the early 2000's), and do NOT get it on any fabrics you want to get it out of again. Tacky, messy stuff, but the syringe it comes in is real convenient.
 
Yes, still the aluminum cab, seats 300!

Know about Tef-Gel in fact use it all the time, if I know it is aluminum. The fact that it is aluminum surprised me and the machine shop. At first, he said I was wrong until he started drilling it for the heli-coil.
 
quote:
Originally posted by Stephen

I'm talking abut the plastic body with the inlet and outlet on one side, and it bolts to the housing on the other side. The bolts and nuts do nothing to cause an offset as they are all on the outside of the bracket. If I remember, two or three of the five bolts were already threaded through the bracket and served a dual purpose of holding the body and housing together and hanging the bracket. I just did the same with the other ones. If i remember, I'll take a picture the next time I'm on the boat.

Click to expand...


Nope, there are 5 bolts, 4 of which go through, but are not threaded into the bracket. Nuts on the forward side of the bracket hold the pump assembly to the bracket. You have to carefully torque that pump body to the face which you cannot do when it is on the bracket, because you cannot get a wrench to hold on the outlet side of the pump.
 
We've got Mercruiser big block inboard engines on our Cruisers. Changing a water pump impeller is no picnic. Aside from having to stretch down into the engine bay, head first, you have to disassemble what seems to be half of the engine just to reach the two hoses, which are too short to move away from the pump. I changed the impeller a few years ago at the dock. If I remember correctly, the removal and installation took over two hours! Boats are built to be assembled quickly, not to be serviced with any ease. Hy
 
I had Crusader 502s and could do that job blindfolded (almost). I also had Merc 454s and, wisely, I think, farmed that out.
 
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