Hi. Me again.
While dropping the lower unit to put in a new impeller in a Johnson 115, a bushing and spring clip came down on the drive shaft, sitting on top of the pump housing.
On a parts list the thing is called a driveshaft bushing and a circlip (ref. Drive Shaft Housing plate, items 5 and 4).
The parts diagram leads one to believe the clip goes up in the leg first and then the bushing but if that's the case, the bushing would just fall on to the top of the pump and rattle around for a few years.
Inside the exhaust leg casting the bushing fits nicely in a cast feature with the circlip fitting in a groove, holding the bushing up. But this means the bushing goes up first.
Indeed, the way the driveshaft is machined, this bushing can only be effective in a certain 2 inches of the shaft where the shaft is thick enough to hold the bushing, else, it will rattle.
What is the proper assembly sequence?
Why is this bushing even here?
Thank you, J
While dropping the lower unit to put in a new impeller in a Johnson 115, a bushing and spring clip came down on the drive shaft, sitting on top of the pump housing.
On a parts list the thing is called a driveshaft bushing and a circlip (ref. Drive Shaft Housing plate, items 5 and 4).
The parts diagram leads one to believe the clip goes up in the leg first and then the bushing but if that's the case, the bushing would just fall on to the top of the pump and rattle around for a few years.
Inside the exhaust leg casting the bushing fits nicely in a cast feature with the circlip fitting in a groove, holding the bushing up. But this means the bushing goes up first.
Indeed, the way the driveshaft is machined, this bushing can only be effective in a certain 2 inches of the shaft where the shaft is thick enough to hold the bushing, else, it will rattle.
What is the proper assembly sequence?
Why is this bushing even here?
Thank you, J