shift shaft mercruiser 470

[nebcornhusker24]

is it hard to take the shift shaft out of the leg? i have the leg pulled off and the shift shaft seal is shot but i also think the shift shaft itself needs to be replaced, i drained the oil and it was a cream color so i know water is getting into the oil, ive done research and found out the shift shafts will rust over time and that they need to be replaced with a new stainless steel shaft....i would like to try and do it but i bet its going to be a real pain so i should probably just take it to someone. any info would be helpful!! Thanks!!

 

[Bt Doctur]

Re: shift shaft mercruiser 470

# 49,#50 .comes as a unit.#48 is the same O ring used on the input shaft.
If your changing the rod also ,bit tricky but not that hard.Couple of tricks to it.Atool can be made by using a die-grinder, cut-off wheel ,and 3/4 inpact socket. Remove all the material leaving the 2 prongs to fit into the bushing.
http://www.mercruiserparts.com/showSpecialPicture.asp?pn=774811
http://www.mercruiserparts.com/showSpecialPicture.asp?pn=30617A2

 

[nebcornhusker24]

Re: shift shaft mercruiser 470

yeah i know how to get the bushing and seal out it just unscrews i believe but how do you get the shaft out? do you have to basically take the whole dang leg apart? or do you just take the bushing and seal out and it will all pull straight up? i really dont know.

 

[Bt Doctur]

Re: shift shaft mercruiser 470

just slides right out .READ AND UNDERSTAND HOW TO DO IT,a mistake here will require the dis-assembly of the lower to put in back in correctly.
Take a measurement of how high the old shaft is. I loosen and unthread the bushing first, holding the top of the shaft with my thumb I slide the bushing up some for a handel. DO NOT REMOVE SHAFT
Lay the drive down so that the lower driveshaft is horizontal and the prop shaft is vertical.This helps keep the shift dog in foward by gravity.Verify by trying to turn the prop shaft counterclockwise.VERY CAREFULLY ,gently wiggle the shaft free .install the new bushing on the new shaft partway to act as a handel.CAREFULLY insert unit you feel it bottom out, verify the measurement .If the same, install and tighten bushing, check shift operation.

 

[nebcornhusker24]

Re: shift shaft mercruiser 470

ok well i guess i will give it my best shot. it dont sound really hard. i will be as careful as i can be. thanks for your help!