Belt squealing

[RockinRick]

Belt started squealing and top wheel not turning at all... But can manually move it a little back and forth.. I don't know what this belt wheel does? Please advise!

[sailormed]

Water pump it is.

[Tetepare]

Originally Posted by sailormed

Water pump it is.

Yep, 99.99% chance. Your water pump is frozen up and needs to be replaced.

[RockinRick]

I just replaced the sea water pump brand new... so the top wheel looking at the engine straight on is a fresh water pump?? Picture uploaded sideways

[sailormed]

Picture uploaded sideways.

Yeah..we saw that, it looked like front of an engine sideways. Your water pump needs replacement/repair, depends.....take it out and investigate.

[RockinRick]

So is there a raw and a fresh water pump on this engine? Sorry to ask... No manual or anything.

[tkeithlu]

Trace the routeof water from the seacock. Raw water will go to a pump, to a heat exchanger, and overboard. Coolant will not have a seacock, and will be routed all over the engine including through a water pump and the heat exchanger. It's what 90% of your short bits of hose do.

If when you do this you don't find a heat exchanger and only one pump, you are raw water cooled, but that is not likely.

In your picture there are two large diameter hoses coming from the pump. Does one of them go to a seacock and one to a heat exhanger? - raw water. Do they both enter the engine somewhere? - coolant.

[tkeithlu]

Further figuring out your manual-less engine. The belt goes around tour crankshaft (bottom), water pump (top left) and alternator (right top). Man, that alternator has been around awhile. Your belt is and "AX", meaning "A" profile and cogged to go around small pulleys, which doesn't really look necessary in your case.

How about cleaning off that green and white label hidding behind the belt, find out what sort of engine this is, and get a manual?

[Bill O]

Originally Posted by tkeithlu

Further figuring out your manual-less engine. The belt goes around tour crankshaft (bottom), water pump (top left) and alternator (right top). Man, that alternator has been around awhile. Your belt is and "AX", meaning "A" profile and cogged to go around small pulleys, which doesn't really look necessary in your case.

Additionally to the comments above, from the pics it appears your belt is sitting too low in the pulley groove and most likely not the correct width for those pulleys. The belt should be level w/the top of the pulley edge or slightly above (depending who you talk with about belts). Also if there is any corrosion on the pulleys where the belt will hit, you may want to take some emery cloth and sand it smooth. This will increase the life of your belt.

[RockinRick]

I replaced the fresh water pump.. but I don't know how to bleed the system so no air bubbles are trapped. Any suggestions??

[RockinRick]

Can anyone help me with suggestions on how to bleed the fresh water cycle?. New pump installed

[RockinRick]

All set... All bled.. running nice and cool.. thank you

[Bill O]

Did you change the belt and go slightly wider?

[RockinRick]

Keep the same belt as I caught it in time.. still good... Thank you

[Bill O]

From the pics it didn't look like the belt was riding correctly in the pulley V.


When you replace the belt next time it should sit like this: