Crankshaft seal when reassembling

[prairieboy]

Putting the finishing touches on reassembling my 787 and I have a question about the PTO side crankshaft seal.

Should it be up tight against the washer or as long as it's in the the proper area and the PTO hub seals into the seal. Right now I have about 1/4 inch gap between the washer and seal and I'm pretty sure the hub on the PTO is sealing into the seal.

The washer is a little sloppy in the groove but I don't suspect the crank seal pushed up to the washer is a huge deal or should I disassemble and redo.

 

[prairieboy]

Bump - hoping someone out there might have an answer - please.

 

[racerxxx]

I always put mine against the washer. That's where it should be.

 

[prairieboy]

Thank you. Although not the answer I was looking for, I better make sure it's right. Compete teardown ..... Here I come..... Again. Lol

 

[ORION '95 Speedster]

Thank you. Although not the answer I was looking for, I better make sure it's right. Compete teardown ..... Here I come..... Again. Lol

One guy says jump, and your off the edge of the cliff without a second thought? You should consult your owners manual or do further research before tearing the engine apart again.

What I just said has NOTHING to do with an engine seal, it has to do with proper research.

 

[racerxxx]

One guy says jump, and your off the edge of the cliff without a second thought? You should consult your owners manual or do further research before tearing the engine apart again.

What I just said has NOTHING to do with an engine seal, it has to do with proper research.

I did the research for him. I have a case of OCD when I take things apart to document as much as I can.......so it goes back together correctly, the way it came from the factory. And, I post it all here for guys to see (Check my builds in my sig line). These are minute details that the manual might skip over POSSIBLY. It's also pretty easy to measure the wear mark on the PTO snout where the lip rides and deduct where the seal should go by measuring back from the back of the rear bearing inner race . And, you never want to have a seal in a cavity without having something backing it up, there is enough room in there to have the seal cocked and create an air leak. Air leaks make a 2 stroke go boom.

From my 98 SPX build

http://www.seadooforum.com/showthread.php?76155-1998-Seadoo-SPX-Resto-Project/page2

From my Clapped out 96 XP build

http://www.seadooforum.com/showthread.php?56273-96-XP-Resto-Project-Clapped-out/page1

 

[ORION '95 Speedster]

I did the research for him.

Your advice and engine rebuild skills appear to be good. I'm not doubting your advice, i'm just suggesting that HomeSlice here get a 2nd opinion before tearing his motor apart. Lets say you were wrong, and he followed the advice. Lets say you told him that your supposed rub dog turds on the seal before installing it so that wont "bust a major hemorrhoid". All I'm saying is that he should confirm the information before proceeding with such a large repair procedure, especially because the advice could be incorrect (in theory). Next time he may ask advice from someone else, get incorrect information, and wind up doing something wrong because he did not confirm the information.

 

[racerxxx]

From the factory pwc service manual in 1999. Sorry it was the one in my recent docs, I couldn't connect to the drive on my other PC where I keep all my manuals to pull the page from the 99 boat manual.


View attachment 99_Service Manual.pdf

 

[ORION '95 Speedster]

Well if your advice is accompanied by service manual pages, then he does not need to research the matter further. Without the pages, he should verify any advice before proceeding with a complete engine rebuild. Does that sound fair enough?

 

[racerxxx]

Anyone building an engine should have the manual.

He can just ask questions here. If guys start asking for torque specs I know they don't have the manual and will refer them to get it. I'll answer questions on the build process all day long if I had to, but torque specs.....you can read them for yourself. I actually have all the pics and processes required to tear down and rebuild a 787 from one of my builds, just no time to put it all together and post it. Some day I will. We have MANY guys here who a really good on certain things/aspects of these toys which makes us very diverse here, that is why this is the best forum out there.

 

[jhjesse]

One guy says jump, and your off the edge of the cliff without a second thought? You should consult your owners manual or do further research before tearing the engine apart again.

What I just said has NOTHING to do with an engine seal, it has to do with proper research.

Ohhhh Danielson...never question Mr. Meaugie!
Racerxxx and Matt Brailey have probably forgot more about these engines than most people will ever know.

Shameless plug for you Dan and Matt. Lol

 

[prairieboy]

Fwiw, racer was correct. I couldn't see it in my repair manual but confirmed it with a mechanic who's done hundreds of these engines. I posted cause the shop wasn't open when I wanted to know the answer so I came to the next place I knew they'd know the answers. Thanks again racer!

 

[ORION '95 Speedster]

Excellent. I'm sure racerxxx knows what he is talking about, but I'm glad to hear that you verified the information. If I were to tell you what spark plugs to put in it, you should verify that information as well before using them. Some people are good mechanics, and some are not - and they will all offer advice. You must pick and choose what to use, and always verify the info before proceeding.