What is the reason for this bolt?

[97GPSLEEPER]

What purpose does this bolt serve? I am on my 3rd intake duct since 1997, and the second one that just cracked did not have one in it. The only duct that had one in it was the original I guess, I don't remember. I did not take it out and put it in the second duct. ?????

[Flying Scotsman]

if I remember without looking it holds that inner bushing in place

[big raider]

if I remember without looking it holds that inner bushing in place

correct-when my duct cracked and i replaced it i ran the new one without a bearing and it ran fine for 2 yrs. till i sold ski- mark

[big raider]

plus when the bearing goes bad it marks a groove in the driveshaft-seems like that would slow you down- mark

[97GPSLEEPER]

I have not ran a bushing since 99 or so. In the service manual there is a bushing and an oil seal. Your actually supposed to pack grease in there. What is the purpose of this grease, bushing and oil seal?

[97GPSLEEPER]

I went ahead and ordered the 2 oil seals, bushing, & spacer. It must not be too critical, but it is there for a reason.

[Flying Scotsman]

Its there to wear the driveshaft

Probably to keep the driveshaft straight

[97GPSLEEPER]

In 99 I did not even have a service manual. I just had a little book that had all the torque specs. The parts I just ordered got thrown away with the cracked intake duct 8 yrs ago.

[jdog800]

I always thought that the seals and grease were to give a barrier to keep water from exposing the rear side of the intermediate bearing from corrosion.

[jdog800]

and the little bushing was to help the water flow around the hole better giving less cavitation before the prop.