lower drive shaft, oil seal wear ?

[ziggy]

Re: lower drive shaft, oil seal wear ?

still learning i guess, took my two waterpump coves to the merc dealer(one new, one old). there is no seal at the top of the waterpump it seems. what looked to me like a seal was a meltdown of my waterpump houseing, the melted plastic wore the grove it would seem. so at this point i ain't sleeveing that area. only at the top of the shaft. yep. i will put the pump on first just so i don't have issues of the pump slideing over the sleeve at the top, even though i'm guessin it will clear. <br /><br />so leave that o-ring off ay, achris. it is painfull to keep it in it's slot when reinstalling the lower, comes off everytime i missed the line up and had to drop it back down. oil seal ripped it right out of the slot. if going on is the same thing. well, guess i will leave it off, assuming i get to that point. think i'm headin in that direction though with the help recieved here..... thanks.

 

[ziggy]

Re: lower drive shaft, oil seal wear ?

i don't know about that one tommays. on mine i just ran the calipers down the shaft at various points. wondering about how i was gonna put the sleeves on. even in just looking at it it looks just a bit tapered. the lands where my oil seals ride are not tapered. that one don't look exactly like the one i have, is that a model 1?

 

[SeattleMatt]

Re: lower drive shaft, oil seal wear ?

I'm actually in the process of performing this as well on a 1 unit. Interesting I should come across this thread. <br /><br />Anyway, there is an oil seal below the water pump, with two seals, is this not worn on your shaft ziggystardust? Mine is worn the most there, I haven't put a caliper on it, but we were planning on using sleeves as well.

 

[achris]

Re: lower drive shaft, oil seal wear ?

Sorry Ziggy, I thought you were talking about the seal area below the water pump. Now, if you have a melted housing, why? Was it you we went throught the pus and pain of replacing the water pocket cover in the top box with? I post so many replies I sometimes lose track. Sorry. <br /><br />Yes, the reason for leaving the top o ring out is exactly what you found, it picks up on the seal. As I said, Merc deleted the o ring groove on the MR and later shafts.<br /><br />On the top of the water pump housing is an 'seal' of sorts. It's a rubber ring, square in section. That's all that's there. If you have a bit of a groove, don't worry about it. That rubber ring will cover it up.<br /><br />Would you like a picture of the lower box? (like the other one)<br /><br />tommay,<br /><br />The shaft is the same size all the way down, but the area just below the splines at the top is reduced just slightly, it happens when the splines are machined. This applies only to the MC-1 and R. The MR, A1, A1 gen II are different.<br /><br />Chris...............

 

[tommays]

Re: lower drive shaft, oil seal wear ?

its a GEN II but i thought the seal areas would be one size<br /><br /> i am following this because even my 1995 drive is showing some groveing in the seal areas <br /><br />and if we you make yours good we can make it easy for others to save there drives to<br /><br />tommays

 

[SeattleMatt]

Re: lower drive shaft, oil seal wear ?

Also, It seems that a tool that might be able to slide the sleeves down may be the actually impeller itself, it seems to be the right size and it's cheap if you mess it up. It may not be robust enough though.

 

[ziggy]

Re: lower drive shaft, oil seal wear ?

yep, i'm the one with the waterpocket cover blues, (rectified)put that cover on just today, worked very well. thanks for the make a jig tip. <br />yes, i was a little off with where the seals are. i was thinking there was a seal at the top of the waterpump, i see there is not, only on the bottom. i have a fairly light groove down at that point on the shaft. don't think i'm gonna sleeve that, but perhaps i should, slow boy's got me thinking. yes, the upper half of the waterpump had meltdown syndrome. blisterd. the plastic guide tube melted down too. i personaly got the temp up to the very bottom of red in the gage on the dash(wish it had numbers on it). turned it off when it was about halfway up, still in green. i had no water flow. and after shutdown, it was sizzeling, (like where's the fire, but there was no fire)impeller must be toast i thought, which it was. that will teach me to listen when people say check yer impeller prior to the season. also dad(deceased) had got it pretty hot to before he died. running it w/o the hose hooked up to the t-stat houseing, best i could tell from his discription. anyways, it has gotten hot a couple of times at least. i speculate the meltdown was from that heat. is there something else that could cause this meltdown i'm not hip too?

 

[ziggy]

Re: lower drive shaft, oil seal wear ?

slow_boy, i saw a speedi-sleeve today, it comes with a drive tool. though it is to short for our application. the tool looked like nothing more than a thin piece of aluminum with a fairly sloppy fit on the speedi-sleeve. time will tell, but i would think the question is weather ya can slide it on, or will it be so tight as to need to press it or drive it on with a hammer. the driven part of the speedi-sleeve is designed to shear off so there won't be a flange ontoit after install if nessaray. think it was mentioned above about not wanting to break that flange untill the sleeve is in place, finnesse will get us through i hope......

 

[achris]

Re: lower drive shaft, oil seal wear ?

I use to cut a hole in the top of the driving tool, then just tap it down, evenly, with a hammer on the top edge of the tool until the speedi-sleeve was in the right place. Just be real careful, if you drive it too far, ya can't get it back!. <br /><br />Ziggy,<br /><br />Your dad running the engine with the hose at the thermo housing is what killed the impeller, then trying to run with a dead impeller is what will have taken out the water pocket cover. I'd also be checking the exhaust sleeve below the elbow, if that's got a hole in it, then you'll fill your boat with water!<br /><br />Good luck.....

 

[SeattleMatt]

Re: lower drive shaft, oil seal wear ?

We were successful at using the speedi-sleeve, it cost dam near $50 tho, oh well. We machined a piece of aluminum to mate up to the sleeve tool, worked well. The important part here is that the sleeve is VERY small, and you have to be VERY accurate in your measurement of the distance because you can barely get both seals on the sleeve.<br /><br />Achris is correct, it CANNOT come back after it's gone too far, so at this price, be careful, good luck.

 

[Bondo]

Re: lower drive shaft, oil seal wear ?

Achris is correct, it CANNOT come back after it's gone too far, so at this price, be careful, good luck.

Ayuh,..................<br /><br />He IS Pretty Good Isn't He.................. <br /><br /><br />I've had Terrible Luck trying to drive those things a Long Ways onto shafts.......<br />Having Machine Tools,+ Being able to Make your own Tools is a Big Plus.........<br />1 that I don't Have............

 

[ziggy]

Re: lower drive shaft, oil seal wear ?

well, just to let ya know how it turned out. got two speedi sleeves in place now. . measure twice, do it once. but. any ways, got the second one where i wanted it. got her all together now and started it up tonight. seems ok. stayed cool, no water in the lower gear lub, yet. though time will tell when i give it a lake test. thanks to all that helped me out with this project. on to the next one i hope. minor tune up and a manifold and riser are next, the fun continues ...... ziggy