OMC Cobra - Resealing upper

[randyn]

I have resealed the upper on this drive with the exception of the one seal on the driveshaft. I would like to go after this one but it looks like a nightmare. All is well with the exception of the seal it holds vac but not pressure in a dry condition. I thought I would fill drive with oil and retest, but am unsure if this will work. Does anyone know what special tools I will need if I attempt this? and what parts I should change (bearings, races,shims, etc. other than the obvious seal?
Is this a task that can be completed by a fairly average mechanicc or better left to a pro?

 

[randyn]

Re: OMC Cobra - Resealing upper

As I posted above I pressure tested in a dry condition and it passed the Vac test but failed pressure. I have added oil and retested with 10 Lbs of pressure and it does leak down at the driveshaft input. All replies/tips are welcome

 

[sea wolf]

Re: OMC Cobra - Resealing upper

Fill it with gear oil, run off hose, & see if the oil is milky. If not, you should be good to go. If it ain't broke, don't fix it.

 

[sea wolf]

Re: OMC Cobra - Resealing upper

Oops, missed your second post. What do u mean by driveshaft input?

 

[randyn]

Re: OMC Cobra - Resealing upper

driveshaft - yoke - whatever it is called. behind the U-joints. It is leaking there even when full of oil. Good news though I guess since this is inside the bellows then no water should get in the drive normally.

 

[randyn]

Re: OMC Cobra - Resealing upper

anyone?