Jeremygavin
Well-Known Member
- Mar 6, 2012
- 2,054
- Boat Info
- 2011 520 Sedan Bridge
2016 Sea Ray 19 SPX OB
2019 Walker Bay Generation 340
- Engines
- Cummins QSM11s
Mercury 150 Fourstroke
Honda 40hp
I had the props pulled and had a few inches of pitch taken out of them this winter. I put the props on a few weeks ago. I am going in the water next week and I am still questioning my installation technique. I have seen Tony on Sbmar’s procedure and I tried to replicate it. The boat has 2 1/2” shafts and 28” 4 blade props. My procedure was to clean the keyway and key. Test fit the prop on the shaft without the key in place and mark where on the shaft it slide to. Then I put the key in and put the prop on and key didn’t bind so I think I am good there. I sprayed very little WD40 on the taper and wiped it down afterward.
I put the small nut on first and torqued it down as best I could. This is where I am a bit uneasy about the job. I had the shaft strapped off inside the engine room with a 3” rachet strap and had a socket on a 40” long 1” socket breaker bar. I had most of my sitting weight on the bar to tighten the nut but with the shaft binding on the strap, there was a little give till the strap tightened and stopped movement so I never got that hard stop like I would have if the shaft was locked down hard. The strap held so that I could put all my weight onto the bar and the nut didn’t get any tighter so who knows how much torque I was able to apply.
Then I covered the shaft threads with red lock tight and put the second (large) nut on and did the same procedure with cotter pin to follow. So question is, do you think I got it tight enough and I am good? I will be at the boat tomorrow wrapping things up and that will be my last chance to give it another go before I go in the water next week.
I put the small nut on first and torqued it down as best I could. This is where I am a bit uneasy about the job. I had the shaft strapped off inside the engine room with a 3” rachet strap and had a socket on a 40” long 1” socket breaker bar. I had most of my sitting weight on the bar to tighten the nut but with the shaft binding on the strap, there was a little give till the strap tightened and stopped movement so I never got that hard stop like I would have if the shaft was locked down hard. The strap held so that I could put all my weight onto the bar and the nut didn’t get any tighter so who knows how much torque I was able to apply.
Then I covered the shaft threads with red lock tight and put the second (large) nut on and did the same procedure with cotter pin to follow. So question is, do you think I got it tight enough and I am good? I will be at the boat tomorrow wrapping things up and that will be my last chance to give it another go before I go in the water next week.
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