1969 electric shift question

[rockyrude]

First, I want to wish everyone a belated happy holidays, for the first time in a long while work kept me away from my hobby. Some may know I'm working on a 69 115 hp 115983e and am having to rebuild the lower unit. My problem is that neither of the gears is/were fixed to the prop shaft, no keyways, no splines, not even a press fit. How in the devil do the gears drive the prop shaft? I've got the oem manual on order.

 

[Faztbullet]

Re: 1969 electric shift question

Here is simple version,the hubs are splined and slide on prop shaft, coil is powered by selector switch in control, coil magnetizes hub, this causes spring to tighten around gear hub thus turning shaft.

 

[rodbolt]

Re: 1969 electric shift question

1969 v4 outboard should be a hydro electric that uses a fwd gear driven pump to supply hydraulic pressure and two solinoids that control said pressure to move the shift clutch,splined to the propshaft, to either the N position,or both solinoids energized the R position.
anytime the pinion turns so do the fwd and rev gears. anytime the fwd gear turns you have pressure in the hydraulic passages.
all the way fwd and the shift clutch engages fwd gear,at its mid point the cluctch simply rides along the prop shaft and you have N. all the way aft and the clutch engages the rev gear and either the engine stalls or you go backwards.
at a minimum your going to need the drive shaft holding tool,a seal kit,and the shift clutch piston oring, doesnt usually come in the kit.

 

[Faztbullet]

Re: 1969 electric shift question

Rodbolt is correct.. I should have reread post on hp as I was thinking about the older "bullet' units:redface: