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| MERCURY 50HP IMPELLER 3 CYLINDER 2 S... |
| Author |
Message |
    
DAVID TUCKWELL
New member
Username: davidxxx
Post Number: 1
Registered: 07-2009
| | Posted on Saturday, July 18, 2009 - 04:45 pm: | 
|
HI I,VE FITTED A NEW IMPELLER AND TO FIT GEAR HOUSING BACK ON TROUBLE IS THE DRIVE SHAFT HAS RUBBER SEAL AT THE TOP THAT HAS COME OFF WHEN I TOOK IT OFF .I HAVE TO GET IT BACK ON ANY IDEAS.ITS A 1987. |
Graham Lamb
Senior Member
Username: galamb
Post Number: 5702
Registered: 05-2007
| | Posted on Saturday, July 18, 2009 - 06:02 pm: |
|
Are you referring to an o-ring that goes around the splines just a hair down from the top of the drive shaft? |
DAVID TUCKWELL
New member
Username: davidxxx
Post Number: 2
Registered: 07-2009
| | Posted on Saturday, July 18, 2009 - 06:56 pm: |
|
YES HOW DO I GET IT BACK UP THERE IS ANY WAY WITHOUT TAKING THE LEG OFF. |
Graham Lamb
Senior Member
Username: galamb
Post Number: 5715
Registered: 05-2007
| | Posted on Saturday, July 18, 2009 - 11:38 pm: |
|
Nope - That o-ring serves a couple functions.
Firstly, it provides a seal to help keep out moisture which helps prevent the driveshaft from rusting into the crankshaft
Secondly, it prevents the grease that should be on the driveshaft splines (you did grease it before you put it back together right) from migrating to the top of the driveshaft, which can cause excessive pressure against the crankshaft which can damage the lower crank bearing or seal.
Can you live without it until you next do the impeller (which should be every second year) - maybe - but for how long it takes to drop a lower unit, why take the chance... |
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