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77 merc 50050 water pump

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pilot481

Regular Contributor
"Pulled the water pump yesterd

"Pulled the water pump yesterday because of no water from the tel tale. Pump impellar looks fine but i didnt find a seal beween the engine water tube and pump outlet, and the outlet of the pump body is missing a large piece of the outlet. It looks like the edges of the missing area of the pump outlet are smooth like its supposed to like that. Anybody have a comment about this Please..."
 
"for some reason I cant upload

"for some reason I cant upload any photos. Locks my machine up.???

The open part where the engine cooling tube goes looks like it is factory made this way. Ok so be it, but shouldnt there be a rubber seal between the tube and the pump? If the pump wasnt lined up with the tube on the last pump replacement could it have pushed the tube up into the motor???"
 
"just realised the cut out on

"just realised the cut out on the pump outlet is to allow acess the mounting bolt, But I still need to know how the engine tube seals to the pump outlet. Help me out here please."
 
"The copper tube just shoves d

"The copper tube just shoves down inside there-no seal. Is it sealing properly at the top, under thepower head?

Jeff"
 
THANKYOU! THANKYOU!!! With y

THANKYOU! THANKYOU!!! With your information I have discovered that the tube from the engine has been pushed up enough so the tube does not even touch the seal much less enter it!!! Yea ha!!! Had the exact same issue with the 58 johnson I had. Thanks again!!
 
ok so now how to pull the wa

ok so now how to pull the water tube back down. I assume its only pushed in a rubber grommet up top so I should be able to work it back down correct???? I made a brief attempt to do that but no luck so far
 
"to those who responded, Thank

"to those who responded, Thanks for the help. Your input helped me to find the real problem with my 77 50hp merc. Just a clogged tell tale tube. It took a hundred lbs of air pressure to blow it out but, out it came. Plugged with sand. Needed to come apart anyway. Thanks again for all your help"
 
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