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Pump is leaking oil from fill hole

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Zep654

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« on: December 22, 2019, 01:04:54 PM »
I have a Berkeley 12JC pump.   I walked out to the garage this morning and noticed gear oil leaking from the pump upper right fitting (the one at like 2 o clock...the fill hole).  Any idea why this would happen?  The other hole isn't leaking.  I hope this isn't the case, but is there any chance somehow there was water in there and it froze which expanded and pushed the oil out?  I should note, I only had zerk fittings so that is what I put in at the time after I filled it up with oil.  Maybe it is just leaking from the zerk and there is no issue?  I have new non zerk fittings coming.

Also.  Just to confirm, the hose coming from the pump goes into a brass T and then to the lower water ports.  The upper water ports on the intake manifold go back out into another brass T and then into a single line out the back of the boat correct?  Or do I have that backwards?

Last thing to confirm.  The faucet inline from the pump is at 1.5 turns counterclockwise (open).  Is this a good place to start and then open further if I see the water temp getting to hot?  Is it open too much at 1.5 turns?

Thank you for any of your ideas.
« Last Edit: December 22, 2019, 01:09:54 PM by Zep654 »
  • Boat #1: 1975 Hallett Bubbledeck


Flusher

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« Reply #1 on: December 23, 2019, 03:43:08 AM »


I have a Berkeley 12JC pump.   I walked out to the garage this morning and noticed gear oil leaking from the pump upper right fitting (the one at like 2 o clock...the fill hole).  Any idea why this would happen?  The other hole isn't leaking.  I hope this isn't the case, but is there any chance somehow there was water in there and it froze which expanded and pushed the oil out?  I should note, I only had zerk fittings so that is what I put in at the time after I filled it up with oil.  Maybe it is just leaking from the zerk and there is no issue?  I have new non zerk fittings coming.

Also.  Just to confirm, the hose coming from the pump goes into a brass T and then to the lower water ports.  The upper water ports on the intake manifold go back out into another brass T and then into a single line out the back of the boat correct?  Or do I have that backwards?

Last thing to confirm.  The faucet inline from the pump is at 1.5 turns counterclockwise (open).  Is this a good place to start and then open further if I see the water temp getting to hot?  Is it open too much at 1.5 turns?

Thank you for any of your ideas.

Is it leaking a lot?  A little oil goes a long way.  I would first try adding more oil and noting the condition of the oil coming out of the other plug.  Is it milkshaked (oil saturated with water)?  Also note how much oil it takes.  If it is excessive, it could be filling up the bowl behind the impeller.

A picture of how your intake manifold is plumbed would help.  Also need to know what type of exhaust you have.  Did you find headers yet?  Are you going to run them dry?  Most likely, you won't need two lines coming off the intake manifold, into a tee, finally into a single line overboard.  If your manifold has a thermostat crossover.  You do need to have flow from the front of each cylinder head.  A thermostat crossover provides this, but not all manifolds have one.

Regarding the gate valve (faucet) from the pump, if 1.5 turns is where it was running, I would leave it there and monitor your temperature and adjust accordingly.  IMHO, oil temp is much more important and indicative of how the engine is running, rather than water temp.  You also don't have much flow from the pump at idle.  Just be sure your temperature is not out of control at low RPM.  Your water temperature will vary with water flow (RPM) from the pump.
"I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

Zeppelin654

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« Reply #2 on: December 24, 2019, 06:19:48 AM »
Once again, sir, I appreciate the help.  I am not home to check the oil in the pump yet, however here are the port setups on my engine. 





I am running bassett shorty OT headers run dry.  I just wanted to confirm the flow of water. 

Should go from:

1. lake to pump
2. pump to t fitting
3. fitting into to hoses going to the water pump ports (the two under the idle pulley bracket)
4. the two fittings on the intake manifold (no crossover or thermostat) then come out into two hoses
5. those two hoses back into another t fitting
6. that t fitting into one hose
7. single hose back into lake through the transom

Is this correct?

Thank you!!

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« Reply #3 on: December 24, 2019, 08:53:09 AM »
Correct
"I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

 


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