Alpha 1, Gen 2 Gear Lube Leak

jesselh

Cadet
Joined
Jun 6, 2010
Messages
7
Hi, I did a water pump rebuild/gear lube change when I recommissioned my boat this Spring and a week or so later noticed gear lube leeking through the forward weep hole. Its a pretty small amount of lube, but I don't want to get back in the water until I fix the problem. I replaced all the seals/gaskets that came with the water pump repair kit, but that's it. It wasn't leaking before I did this, so what did I screw up?

Thanks in advance for your help with this!
 

Searay23

Cadet
Joined
Jul 26, 2009
Messages
10
Re: Alpha 1, Gen 2 Gear Lube Leak

I had the same problem but I had Searay people do the work. I had them change out the water pump on the drive on my alpha 1 and got it home and noticed the oil coming out of the weep hole.. Took the boat back to them and they had to disassemble it again to fix it. They said a o ring was out of position..
 

jesselh

Cadet
Joined
Jun 6, 2010
Messages
7
Re: Alpha 1, Gen 2 Gear Lube Leak

Thanks. The out of position o-ring was my first thought too. I'm going to pick up a new one as well as the quad ring and drop the drive tomorrow. I'll report back with findings. Thanks.
 

jesselh

Cadet
Joined
Jun 6, 2010
Messages
7
Re: Alpha 1, Gen 2 Gear Lube Leak

Does anyone have the part number for the quad ring? Or a parts breakdown that can point to it? Thanks!
 

John_S

Rear Admiral
Joined
Jun 21, 2004
Messages
4,269
Re: Alpha 1, Gen 2 Gear Lube Leak

Does anyone have the part number for the quad ring? Or a parts breakdown that can point to it? Thanks!

I have never purchased seperatly. On '97 and earlier, it says no longer available, but '98 and newer, same part number, but available. ;)

http://www.mercruiserparts.com/Show...=GEAR+HOUSING+(DRIVESHAFT)(STANDARD+ROTATION)

7 26-45577 ----SEAL (click here) This Part is No Longer Available 5,6 $1.55 $1.51 1



http://www.mercruiserparts.com/Show...c=GEAR+HOUSING(DRIVESHAFT)(STANDARD+ROTATION)

7 26-455771 ----SEAL (click here) 15,17,18 $2.10 $2.05 1
 

longtravel

Cadet
Joined
May 28, 2009
Messages
8
Re: Alpha 1, Gen 2 Gear Lube Leak

My drive was leaking from the same place, the weep holes at front of the drive. The upper seal was leaking at the top of the shaft the runs vertical in the drive. Possibility that when you did your impeller you may have damaged that seal. If it is that seal , when you split the drive you will see oil running down that shaft and oil sitting on the impeller cover.
 

jesselh

Cadet
Joined
Jun 6, 2010
Messages
7
Re: Alpha 1, Gen 2 Gear Lube Leak

OK....here is where I'm at.

I split the drive, replaced the quad ring (used some bellows glue to hold it in place) and replaced the two o-rings and the seal on the shift shaft housing. Obviously, all the oil above where the drive split drained out, but I kept the oil that was in the lower-lower unit as it was brand new and not milky. After putting it back together, I filled the drive with lube to the FULL line in the reservoir. Ran the motor (in forward to turn the gears) for a bout 5 minutes afterwards and saw no leaks. Finished this all at about 3PM yesterday.

When I left for work at about 5AM this morning, I rubbed a paper towel at the weep holes and on the bottom of the sceg and came up with a pretty small amount of oil. It wasn't alot, but it was enough to stain the napkin, and I know that area was clean when we finished. What's interesting is that the oil on the napkin was dark, almost black...not the very distinctive blue of the gear lube.

Maybe I'm grasping at straws, but is it possible this is old lube from the old leak making its way out (or down)? Or is it probably still leaking? I had to leave the boat for work for 4 days, so I'll have an answer on Friday when I get back I guess.

Next question is assuming it is still leaking...how much will a shop charge me to pressure test it to find/fix the leak?
 

Searay23

Cadet
Joined
Jul 26, 2009
Messages
10
Re: Alpha 1, Gen 2 Gear Lube Leak

I would wait awhile until all of the oil from the leak is drained from the drive..
I looked up a older bill from SeaRay for dropping the unit and inspecting and replacing the seals and they charged me $204 total..
 

jesselh

Cadet
Joined
Jun 6, 2010
Messages
7
Re: Alpha 1, Gen 2 Gear Lube Leak

Thanks for all the help so far. I haven't fixed the problem, unfortunately.

Everything appeared sealed with no leaks, I even ran the boat once with no indication of a leak. Well, today after running the motor at the house to warm it up in prep for going to the river, i noticed lube leaking again. There is a weep hole facing forward on the shift shaft housing (where the top of the shift shaft from the lower lower unit meets the upper part of the unit.)

Is this an easily identifiable leak? Anyone else have this problem? Thanks!
 

jeepnsam

Petty Officer 2nd Class
Joined
May 20, 2010
Messages
128
Re: Alpha 1, Gen 2 Gear Lube Leak

try draining the gear lube and pressure testing at 5 psi. That's my plan as I am in the process of changing the impeller pump.
 
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