my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

[bonitoman]

I picked up a used lower unit and everything is good except my shop manual says pinion height should be 21 1/4 inches when in neutral. The only way I can get that reading is when the engine is in reverse. I still have foward but when I am shifting by hand with no controls connected it will go into foward. Is this going to do any damage? I have always had engines line up to spec. This one puzzles me since I have the shift rod screwed down as far as it can go. Is it safe? Thanks

 

[Joe Reeves]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

That reading/measurement is to be taken with the unit in neutral (as you state), but the measurement is to be from the top surface area of the lower unit to the center of the shift rod hole.<br /><br />Is this how you're taking that measurement, and are you sure that's the correct measurement? I may be in error (book not in front of me) but the reading that comes to mind at the moment is 21-15/16".

 

[bonitoman]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

Hi Joe, I am measuring it from top of lower to the shift hole. Your measurement is closer than to what the manual states 21 1/4 + or - 1/32 The engine is a 95 150 60 degree intruder.

 

[OBJ]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

Bonitoman....the shift rod is threaded into the shift mechanizim and can be screwed up or down to get the correct shift rod height.

 

[clanton]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

Joe I looked at the book, his specs are ok. You doing alright? I went back to work full time for a dealer, helps keep me sane., Already had a four stroke apart.

 

[bonitoman]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

I have threaded the rod all the way down and I am not close to 21 1/4. I am at 21 1/2

 

[Dhadley]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

Do you have a 60 degree shift rod or are you using the one that was in the unit?

 

[bonitoman]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

Dhadley, I have a shift rod from my lower that was bad. I will swap them and see what happens. Thanks

 

[Dhadley]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

The upper end has to be the same as the one that was in your old unit. If they are different you can use your old shift shaft. As mentioned, they just screw in and out.<br /><br />But -- dont ya just love this part? -- if the unit you bought didnt come off of a 60 degree motor you may have to make some slight changes. It will still work but lets look at something first.<br /><br />What motor did it come off of?

 

[bonitoman]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

I took the old one off the blown lower and it works on this one. This shift rod that was in there was way to long. Now I see what the mechanics did to the lower. It was from a 25 inch shaft. The driveshaft was cut 5 inches and welded. That appears to be the same height as my old one. Now that I have the proper shift rod it is working fine. I just hope the driveshaft never snaps where it is welded.

 

[Dhadley]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

The weld should be fine.<br /><br />What motor did this come from?

 

[bonitoman]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

I do not know the engine that it came from.

 

[Dhadley]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

Thats OK. Measure from the top of the gearcase housing to the top of the driveshaft on both gearcases. You will have to measure closely as we may be looking at only a 3/8" difference. <br /><br />If they are exactly the same youre good to go (with the new water pump assembly and gear lube of course).<br /><br />When you put the case on the midsection, it should go all the way up flush easily. If it doesnt or the powerhead starts to bind up, just stop. Let us know and we will look at some other stuff.<br /><br />Good luck!

 

[rodbolt]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

Hello<br /> Good call DHadly. that was going to be my next question. Bonitoman listen to DHadley as most all late model v6 and v8 and looper v4 gear cases will physically fit. there were some driveshaft hieght differences. so far this year I have had 2. we have a budget junk yard in the area that sells anything to evewryone with the advice yes it fits no worries.<br /> If the shaft does not fit it preloads the lower driveshaft bearing and rams the pinion down. in the first case it just wiped out a gear set. the second wiped a crank,2 rods and a gear set. not much savings.<br /> good luck and keep posting.

 

[bonitoman]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

I traded a friend who is in the boat business a 40 hp yamah for this 95 150 with a bad lower. The pinion took out all the gears and destroyed the gearcase. I found a lower from a company that I buy pistons and rings for rebuilds. When I put it on the other night the specs were not what the book said for pinion height. I thought about switching the rods and said no they have got to be the same. After reading Dhadleys post I then switched them and it worked out. I can see where they cut the driveshaft and welded it to knock it down 5 inches. I still have the driveshaft from the old lower which is still good. Now I have a spare. I fired it up yesterday and it ran well. Thanks Dhadley and everyone for the input.

 

[rodbolt]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

did you compare the length of the new shaft from the case mounting to the top to the length of the original. there were some small differences that can bite ya <br /> good luck and keep posting

 

[seahorse5]

Re: my shift rod on my 95 150 60 degree intruder is off about 1/4 inch

Compare the driveshafts carefully. Like was mentioned previously, the height makes a world of difference.<br /><br />Also check the area just below the splines. Old style shafts had a small groove to glue an oring to seal the splines and crankshaft from water intrusion and to keep the moly grease inside. Newer motors have the oring inside the crankshaft opening and need a different machined area below the splines. The number of splines is the same, so do not mix them up.