Wearing out thrust washers 225 hpdi

[jethro1]

The two piece thrust washer is better but can still fail.

Yamaha has issued a bulletin or two regarding (1) more torque being applied to the propeller nut and (2) the need to retorque the nut after about an hours ust at a high power stting.

For example, Mercury's torque setting from memory is about 100 lb-ft. Yamaha's published value was 40 lb-ft but that has been increased. Yamaha never said to retorque the nut whereas Mercury said to do it. Retorquing might help and can't hurt.

Oh, the Guardian thrust washer for a Yamaha had a wrong approach angle. If the earlier Guardian thrust washer is used it can be very problematic.

[TritonBoatsGPFC]

The two piece thrust washer is better but can still fail.

Yamaha has issued a bulletin or two regarding (1) more torque being applied to the propeller nut and (2) the need to retorque the nut after about an hours ust at a high power stting.

For example, Mercury's torque setting from memory is about 100 lb-ft. Yamaha's published value was 40 lb-ft but that has been increased. Yamaha never said to retorque the nut whereas Mercury said to do it. Retorquing might help and can't hurt.

Oh, the Guardian thrust washer for a Yamaha had a wrong approach angle. If the earlier Guardian thrust washer is used it can be very problematic.

The guardian washer is the two piece? What I'm worried about is nothing is sitting flush. Once I tighten it it all seems fine but I can't get enough of the nut down to put the cotter pin in. I'm wondering if my hub could have walked back in the prop a little bit and it's causing me to not be able to tighten it enough.

[Meleagris1]

The guardian washer is the two piece? What I'm worried about is nothing is sitting flush. Once I tighten it it all seems fine but I can't get enough of the nut down to put the cotter pin in. I'm wondering if my hub could have walked back in the prop a little bit and it's causing me to not be able to tighten it enough.

The two piece thrust washer for my SHO had to be cranked down hard so that the two parts seated correctly. I thought I was doing something wrong and called my mechanic - he said that it was normal and just to crank it down and it will seat - then you should be able to see the shaft and cotter pin hole. This was for the SHO, not sure if it's the same with the HPDI.

[TritonBoatsGPFC]

The two piece thrust washer for my SHO had to be cranked down hard so that the two parts seated correctly. I thought I was doing something wrong and called my mechanic - he said that it was normal and just to crank it down and it will seat - then you should be able to see the shaft and cotter pin hole. This was for the SHO, not sure if it's the same with the HPDI.

Well I pressed my hub a little further in and tightened it down really good now it seems like it's ok..guess I have to wait until Friday or Saturday when I run it to see how it goes..thanks

[Meleagris1]

Well I pressed my hub a little further in and tightened it down really good now it seems like it's ok..guess I have to wait until Friday or Saturday when I run it to see how it goes..thanks

Anytime - that sounded like what it was - just make sure to retighten after your first use.

[jethro1]

The guardian washer is the two piece? What I'm worried about is nothing is sitting flush. Once I tighten it it all seems fine but I can't get enough of the nut down to put the cotter pin in. I'm wondering if my hub could have walked back in the prop a little bit and it's causing me to not be able to tighten it enough.

Sorry for the confusion.

No, the Guardian TW is one piece. I only brought it up because a problem with earlier versions of it that could cause a prop to loosen and move forward into the gear case.

The improved Guardian thrust washer, the original Yam one piece TW or the Yam two piece TW, when properly torqued and retorqued should not have any further issues.