Jcris
Chief Petty Officer
- Joined
- Apr 23, 2016
- Messages
- 466
After replacing the water pump and putting the upper and lower sections of the drive back together the drive is failing the pressure test. It will begin to drop pressure right away. With the drive assembled it's difficult to see where the leak is coming from. I've sprayed a soapy solution on the fill plug and the area around the test fitting at the bottom and get no bubbles. Same with the shift shaft assembly. The only area I can't really see is the water pump. Can I pull the lower section off and test it separate without the upper installed. At least that would allow me to see better what is leaking. When I put the water pump back together I did not use any sealant on the gasket between the pump base plate and the gear housing. That gasket is metal and not the fiber type . Was that a mistake?
Jcris
On the off chance that the gauge I'm using was leaking I decided to put a better gauge on my pressure test set-up.
I put 15 psi on it and it's holding. I rotated the prop and the moved the shift shaft around. Fingers crossed. I'll check again in a few minutes
well it's not the gauge. so I separated the gear housing from the upper to inspect
This time I pressure tested just the gear housing expecting to see some sort of leak from the water pump area and saw nothing.
I did this by holding my finger over that small hole for the oil passage and it held pressure. Could the upper portion of the drive be leaking somewhere?
Please take a look at the seal that goes on the top of the base plate
It looks rather thin of sealant especially around the mounting holes
Jcris
On the off chance that the gauge I'm using was leaking I decided to put a better gauge on my pressure test set-up.
I put 15 psi on it and it's holding. I rotated the prop and the moved the shift shaft around. Fingers crossed. I'll check again in a few minutes
well it's not the gauge. so I separated the gear housing from the upper to inspect
This time I pressure tested just the gear housing expecting to see some sort of leak from the water pump area and saw nothing.
I did this by holding my finger over that small hole for the oil passage and it held pressure. Could the upper portion of the drive be leaking somewhere?
Please take a look at the seal that goes on the top of the base plate
It looks rather thin of sealant especially around the mounting holes
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