Leaking dog

[Paulus]

Cool Change is back from the North Channel.  Wonderful weather and good sailing.  However, I encounter a minor problem.  On Lake Michigan I had a very rough sail(weather man said N winds 10 to 15, waves 2 to 3'. Perfect!)  Winds became 25 to 35 and waves 6'.  I had reduced sail but occasionally a wave swept over the boat. Checked for leaks and the dog on the front hatch, left side was dripping water.  I placed plastic under the hatch.
Can you take these apart and rebuild?  Should I look for a new handle?  Leave it alone and wait for a heavy rain?
Thanks,
Paul

[Jim Hardesty]

Paul,
Welcome back, just got back myself.  .  Had a great trip. 
I've had leaks like that before and just tightened the screws a little, Phillips I think.  That's worked so far. 
Jim

[Paulus]

Looked for you in the NC.  Sorry we missed each other.  North Channel is big.
Thanks,
Paul

[Jon W]

The dogs on a Bomar trapezoidal hatch can be taken apart. If tightening the screw doesn't help, you can take it apart and replace the o-ring. You can also replace the mushroom cap if it's badly damaged from UV.

[Ron Hill]

Paul : As Jon said "take it apart and replace the 'O' ring" !!! 

It's probably the same 'O' ring (metric!!) that Lewmar installed just before 1989 (over 33 years ago!!) 

A thought

[karista]

Paul : As Jon said "take it apart and replace the 'O' ring" !!! 

It's probably the same 'O' ring (metric!!) that Lewmar installed just before 1989 (over 33 years ago!!) 

A thought

Ron, would you know the O ring size? I have a leak there and the O-ring was totally flat so could not measure its size. I know they are a  Metric size. CD has a rebuild kit for this dog but it is basically is only a collection of various O ring sizes for different Lewmar dogs.

[Stu Jackson]

Bernd, there's no guarantee that someone else's O ring size will be what you need.  They are not expensive.  Buy a few different ones, keep the receipt and return those you don't use.

[Ron Hill]

Benrd : Go to an auto parts store - they'll have a box of assorted METRIC "O" rings.  i don't remember the exact size!!

A thought

[Ron Hill]

Guys : Another source for metric "O" rings and bolts is a foreign auto dealer parts dept. (also if you have a Fastenal store nearby)

Besides Lewmar (hatches) anything for Kubota (engine) is also metric.

A few thoughts