Re: 1st time lower unit removal, what is this part and where does it go?
okay finally got the nut to come off. I bought a 10-32 stainless steel nut from home depot. The only difference I am seeing is that the original is not as tall as the one from home depot, which leads me to the question of torque, does this make a difference, I notice that the stud is not flush with the top of the nut like the original that was shorter(in height).
I am also a little confused on torque values for the water pump nuts. The reason I want to tighten to torque is because the person before me had tightened the nuts too much which warped the water pump housing and made it crack.
I have a 1989 85HP single exhaust, 2 piece driveshaft
On the pump itself it has imprint of 40-50 inch pounds for 1/4 nuts, then it says 15 inch pounds on #10 nut.
When I look in the manual it gives specific torque values for 85HP single exhaust 2 piece drive shaft as 70in pounds for long studs(1/4-28 nut) and 40 inch pounds for short stud(#10 nut). Then if I look at the 90hp, dual exhaust, 2 piece driveshaft it shows 50 inch pounds for long stud and 15 inch pounds for short stud which almost matches what is imprinted on pump housing but I have 85hp single exhaust, not 90HP dual. The reason it is confusing to me is that I am not sure if I am supposed to tighten the 4 1/4 nuts on long studs to 70in/lb(manual 85hp,single exhaust, 2 piece drive shaft), 40in/lb, or 50in/lb(manual & imprint on pump), not sure why they would say 40 to 50 in/lbs(specs for 90hp,dual exhaust in manual 50 inch/pds) on the water pump instead of just one value.
On the short stud the manual says 40in/pds for 85Hp single exhaust, 2 piece driveshaft, whereas the imprint on pump says 15 in/pounds and the manual says 15in/pds for 90HP dual exhaust. I do not want to under tighten but do not want to over do it either and their seems to be a big difference between 15in/pds and 40 in/pounds.
