rolmops
Vice Admiral
- Joined
- Feb 24, 2002
- Messages
- 5,419
Ok, so I could not contain myself and I had to rip into things that I had never seen before.
I picked up an 850 lower unit and tried to put it on a 950.It almost fits,just a few adjustments says I to myself.
It started with cutting away a bit of aluminum to make room for the exhaust housing that the 950 has,but that the 850 lacks.No big deal.
Then I had to change the shift rod from the 950 lower unit to the 850,because the 950 has a longer shift rod.
Removing the shift rods was no big deal.Putting it back in turned out to be a very big deal.The shift cam moved and did not want to move back into place.I tried using the system that Emckelvy described in this forum.It seemed a great idea,but I learned the hard way that shift cams do not know how to read.
I ended up having to open the lower unit.It seemed no big deal,but that was just not the case.
The old prop would not come off even after some very convincing hammering.
Ok no big deal. Out came the old torch and after some very serious heat,the rubber caught on fire and the prop hub came off all by itself,rather fast I should add.It jumped about 3 foot just about where my dog was laying.He now has a burn mark. Ok no big deal.
Out came the old gear pulley and in a show of power the prop housing did come off quite easily.
With a little bit of heat the cover nut came off and now I could use my very own home made slide hammer which consists of a 3/4'' rod about 20 inches long with a couple of long connector nuts a washer and a 2 pound piece of pipe steel which I use to slide against the nut in the rear thereby providing the hammer action.It worked and in no time the propeller shaft and bearing carrier were out of the housing.The cam follower stayed behind in the lower unit but I fished it out and stuck it back into the hollow space of the propeller shaft.
Now it gets interesting.
I held the lower unit up and the cam shaft fell out.There was no way to determine which side has to go up or down.So I used a picture I had made a few years ago from my merc 500 and the reverse ramp went in facing towards the left side and visible from the back.
And lo and behold,the shift rod found its rightful place and I closed up the lower unit in no time at all.
This process took me from 3 in the afternoon till 8 in the evening.
Then I started leafing through a manual and came upon dangerous words like
spring, guide block and what worries me most,3 ball bearing balls with a warning that they might get lost in the depths of the lower unit when the cam follower falls out of the propeller shaft.
In short,should I open the lower unit again and start hunting for 3 ball bearing balls or does the 850 lower unit not have any.
Please give me some good advice and I promise that from here on I will first read the manual and only afterwards do stupid things.
I picked up an 850 lower unit and tried to put it on a 950.It almost fits,just a few adjustments says I to myself.
It started with cutting away a bit of aluminum to make room for the exhaust housing that the 950 has,but that the 850 lacks.No big deal.
Then I had to change the shift rod from the 950 lower unit to the 850,because the 950 has a longer shift rod.
Removing the shift rods was no big deal.Putting it back in turned out to be a very big deal.The shift cam moved and did not want to move back into place.I tried using the system that Emckelvy described in this forum.It seemed a great idea,but I learned the hard way that shift cams do not know how to read.
I ended up having to open the lower unit.It seemed no big deal,but that was just not the case.
The old prop would not come off even after some very convincing hammering.
Ok no big deal. Out came the old torch and after some very serious heat,the rubber caught on fire and the prop hub came off all by itself,rather fast I should add.It jumped about 3 foot just about where my dog was laying.He now has a burn mark. Ok no big deal.
Out came the old gear pulley and in a show of power the prop housing did come off quite easily.
With a little bit of heat the cover nut came off and now I could use my very own home made slide hammer which consists of a 3/4'' rod about 20 inches long with a couple of long connector nuts a washer and a 2 pound piece of pipe steel which I use to slide against the nut in the rear thereby providing the hammer action.It worked and in no time the propeller shaft and bearing carrier were out of the housing.The cam follower stayed behind in the lower unit but I fished it out and stuck it back into the hollow space of the propeller shaft.
Now it gets interesting.
I held the lower unit up and the cam shaft fell out.There was no way to determine which side has to go up or down.So I used a picture I had made a few years ago from my merc 500 and the reverse ramp went in facing towards the left side and visible from the back.
And lo and behold,the shift rod found its rightful place and I closed up the lower unit in no time at all.
This process took me from 3 in the afternoon till 8 in the evening.
Then I started leafing through a manual and came upon dangerous words like
spring, guide block and what worries me most,3 ball bearing balls with a warning that they might get lost in the depths of the lower unit when the cam follower falls out of the propeller shaft.
In short,should I open the lower unit again and start hunting for 3 ball bearing balls or does the 850 lower unit not have any.
Please give me some good advice and I promise that from here on I will first read the manual and only afterwards do stupid things.
