SOLVED: lower unit stuck in foward not sure why????

carholme

Rear Admiral
Joined
Sep 4, 2010
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Re: UPDATED: lower unit stuck in foward not sure why????

Re: UPDATED: lower unit stuck in foward not sure why????

furyman;

Well, at least knowing the shift shaft only moves that little, ensures that it is engaged in the shift cam splines.

As you have not commented on trying to turn the shift shaft with a socket or pliers (rag around the shaft splines of course), I am presuming that you cannot turn the shift shaft. Is this correct?

From the pictures of the shift cam and the cam follower which I sent, do you understand the action which will take place when you turn the shift shaft, how the cam follower will find the Forward, Neutral and Reverse gear detent positions on the cam? If so, you will see what I mean saying that it will take some force to turn the shift shaft.

However, if you feel that you are exerting too much force and cannot turn it, if it were my engine, I would be removing the prop, prop shaft assy etc., to see what is going on in there, especially with the cam and cam follower assy.

Having read all of your posts this morning to try and get a better picture of what happened, having to hammer the LU off and the cracking damage caused on installation of the LU, we are still left with a LU removed from the mid section, which will not shift and until you get this sorted, nothing else matters.

Are you operating on the inland waterways down there or in salt water and have you ever noticed water in the LU when you changed the oil?

If you wanted to talk by phone, let me know and I will PM you my number.

Gerry
 

Bustedknuckle84

Chief Petty Officer
Joined
Sep 29, 2010
Messages
421
Re: UPDATED: lower unit stuck in foward not sure why????

Re: UPDATED: lower unit stuck in foward not sure why????

Gerry,
I didnt have a socket that would fit the shift shaft.
thats correct i wasnt able to spin the shift shaft more then 180 degrees.
1)i see how it takes force to intially rotate the shaft from the detent position.
is that what your talking about?
2) Or are you saying from where the shift shaft stops i need alot of force to move it past the 180 degree rotation?

To be honest i still dont understand whats going on (internally) but i am only able to access the parts diagram picture from work. I still need to look at the other pics in that post.
3) Also what puller (special tools) are needed to take the prop shaft out?

I run it in the salt water. I havent changed the gear lube yet. I can check it out though if needed.
If i could call you that would be a huge help for me. I plan on getting a video on whats happening to. I have tuesday off and will be able to do video to help out here.
 

carholme

Rear Admiral
Joined
Sep 4, 2010
Messages
4,845
Re: UPDATED: lower unit stuck in foward not sure why????

Re: UPDATED: lower unit stuck in foward not sure why????

furyman;

2) Or are you saying from where the shift shaft stops i need alot of force to move it past the 180 degree rotation?

Yes, the 180 degrees which you are referring to can probably be moved with your fingers. But then the cam should come up against the tip of the follower shaft and using pliers or socket you should be able to rotate the shaft more to come into contact with the detents. As the follower shaft contacts this point on the cam:

http://img403.imageshack.us/img403/3793/glm11185.jpg

you should feel the resistance as it starts to travel up the trough of the cam towards the upper LH corner and so on. Turning through this resistance, you will get a positive feel as the follower snaps into the detent position which is one of the gears.

I will PM you my phone number and maybe you could leave a note here as to when you might call. I will be out this afternoon but home all evening. I will also be here on the weekend.

Gerry
 

carholme

Rear Admiral
Joined
Sep 4, 2010
Messages
4,845
Re: UPDATED: lower unit stuck in foward not sure why????

Re: UPDATED: lower unit stuck in foward not sure why????

furyman;


You have a PM with my phone number.

Gerry
 

Bustedknuckle84

Chief Petty Officer
Joined
Sep 29, 2010
Messages
421
Re: UPDATED: lower unit stuck in foward not sure why????

Re: UPDATED: lower unit stuck in foward not sure why????

The problem has been solved! carholme helped me fix this problem! Lust needed more force to rotate the shift shaft of the LU into the next gears.
 
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