I-R outdrive lub question

fmalott

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Jun 28, 2010
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i pulled apart the outdrive to replaced the impeller when i pulled the bottom end off notice there wasn't any lubrication on the drive shaft ( the gear end) it was dry to me that doesn't look right there should be more grease, now does the upper grears get gear oil along with the lower gears and the drive shaft is different so i would just have to through some grease on the drive shaft end or do i have to through grease on drive shaft end and upper grears by pulling the top cover off the upper case
THANKS for your patients guys i'm learning so much from this forum
 

achris

More fish than mountain goat
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May 19, 2004
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27,468
Re: I-R outdrive lub question

Let me guess... The 'O' ring was still on the top of the driveshaft, or had become dislodged and is still in the bottom of the upper housing driveshaft.... If there is an 'O' ring groove on the driveshaft and some clown has put an 'O' ring on it, then that's the answer to your question.

What happens on assembly is the seal in the bottom of the top box fouls the 'O' ring and flicks it partly out of the groove, so when it's all bolted up the dislodged 'O' ring is holding the seal open, and now water can move into the very area the seal and 'O' ring are supposed to be protecting and wash all the grease out. On the 'MR' and later drive there is no 'O' ring groove, period!

Here's what you do. When you have done the impeller work and replaced the seal in the bottom of the top box (part number 26-96503), THROW THE 'O' RING IN THE TRASH!!!! Grease the splines on top of the driveshaft with a good marine grease and assembly the drive... Job done and water can no longer get inside the spline area. :D Don't forget to fill the drive with oil.... :D

Chris.......
 

cr2k

Captain
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Mar 19, 2009
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3,730
Re: I-R outdrive lub question

Marine grease is generally corrosion resistant grease, you want SPLINE grease it is sticker and takes the abuse of splines longer.
 

fmalott

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Re: I-R outdrive lub question

yes i have the drive shaft that has the groove on it and there was a o ring. when i pulled the bottom end off the o ring was still stuck up in the upper housing. so let me get this straight do not put a o ring back on just replace the seal where the drive shaft goes through?
 

fmalott

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Re: I-R outdrive lub question

what about greasing the gears in the upper case
 

achris

More fish than mountain goat
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Messages
27,468
Re: I-R outdrive lub question

yes i have the drive shaft that has the groove on it and there was a o ring. when i pulled the bottom end off the o ring was still stuck up in the upper housing. so let me get this straight do not put a o ring back on just replace the seal where the drive shaft goes through?

Correct....

what about greasing the gears in the upper case

Upper and lower case are connected by a passage (with the quad ring) that is next to the water pump housing. When you fill the cases, from the lower unit, it will flow out of the vent screw hole in the upper. That's how the upper gear are lubricated....

Chris.........
 

fmalott

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Re: I-R outdrive lub question

got it just don't put no O ring on THANKS i will be doing that today
 

fmalott

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Re: I-R outdrive lub question

Thanks Don S. my service manual # 6 does not have this so i saved it. i read through the manual for changing impeller now they are mentioning to replace the O ring on the drive shaft, so now what do i do should i replace the O ring or leave it off i'm having some people say leave off some saying replace i'm kind of stuck on this one
 

Fordiesel69

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Re: I-R outdrive lub question

I leave mine off and no problems have occured as a result.
 

ziggy

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Re: I-R outdrive lub question

so now what do i do should i replace the O ring or leave it off i'm having some people say leave off some saying replace i'm kind of stuck on this one
i leave mine off too. look at it this way. if ya were to get a new drive shaft for your lower. you'd get one w/o the groove to put an o ring on. you wouldn't have a choice then. you'd have to leave it off.
 

fmalott

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Re: I-R outdrive lub question

i respect all your answers i kinda thinking to leave off also but it seems like Don S is throwing a hint at me this why i'm hesitant
 

ziggy

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Re: I-R outdrive lub question

it appears to me that Don S supplied you with the s/m link. the service manual is where the facts are. i reckon it says replace it. but that said. like i said. if ya would have to replace the drive shaft. bet the superseded number and you wouldn't get the groove. then the decision would be moot.
also, achris wasn't him ha'in about what to do with that o ring.. he's a marine tech down under. i respect his comments as much as i do Don S'. and that's a compliment to both these men.... both of them have helped me very much...

edit. + both me and fordiesel69 are running w/o the o ring w/o issues. further reason to not bother with it. that's 2 people that have proved the o ring is not necessary.
 
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fmalott

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Re: I-R outdrive lub question

ok! then so if i don't put the o ring back on the empty groove will not harm anything?
also where the drive shaft goes up through the seal in the upper it looks like the seal has scratched the shaft there is two wear marks like the seal is worn out and marked the shaft is the shaft no good or can it be repaired to me it would look like if i put a new seal on it would leak i think that's why it was so dry when i pulled the botton end off
P.S. i do have pictures of the scratches but i left the camera at the shop i'm at home i will post tomorrow
 

ziggy

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Re: I-R outdrive lub question

ok! then so if i don't put the o ring back on the empty groove will not harm anything?
yep, no harm. least not on mine.... no (zero) ramification.
also where the drive shaft goes up through the seal in the upper it looks like the seal has scratched the shaft there is two wear marks like the seal is worn out and marked the shaft is the shaft no good or can it be repaired to me it would look like if i put a new seal on it would leak i think that's why it was so dry when i pulled the botton end off
yep, i've had (got) the seal wear on both my previous drive + the one i got now. the old one (last one i had) was pretty bad. i used a speedy sleeve on that one. worked ok but i didn't like that ya have to be sure to put the impeller on first, prior to the impeller, as the impeller wouldn't slide by the speedy sleeve. + to R&R the impeller the following year, ya gotta cut the speedy sleeve off to get the old impeller off. then do it all over again.
the drive i got now. the grove was less cut into the shaft than my first one. what i did on it was to R&R the seal, and when i did, i drove it deeper into the hole it mounts in. thus gaining a new surface on the drive shaft. i only put it ever so slightly deeper. this, imho has worked well. a few years later and i can see where the new seal is riding at, just above the groove. imho, for my drive, it was a good repair w/o fixing the groove. + i can R&R my impeller to my desire, like yearly w/o having to deal with the speedy sleeve.
 

fmalott

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Re: I-R outdrive lub question

ok i will keep that in mind when i rebuild i will see if i can push the new seal in farther
 

Don S

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Re: I-R outdrive lub question

You need a new vertical shaft.
 

fmalott

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Re: I-R outdrive lub question

thanks Don S i kinda thought i did i thought about a sleeve but seems like to much trouble i guess i won't have to worry about O ring groove, so one more thing to put on the buy list
P.S. oh my god they want $450 dollars for a shaft
 
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