farmer.leo
Member
The engine was not spitting out water upon start up so was immediately shut down.
The impeller looks visibly OK though was not removed for more inspection.
Raw water can pass OK to the start of the raw water pump (tested with manual pump).
Removing the cover and cranking engine for an instant shows the impelling rotating correctly.
Manually pouring water through a funnel into the raw water pump inlet hose enables starting with normal appearing water spitting out exhaust.
This narrows the problem:
The pump fails when inverting the raw water pump's inlet hose into a bucket of water - no water spits out the exhaust. The pump clearly should have enough suction for this.
I'm new to engines, particularly diesels, so I didn't take the pump apart yet. What should I be looking for? Is there a specific deflection / tension the v belt to the raw water pump should have? How do I extract the impeller without damage (for the future, this one has got to go after all this testing) for inspection? The engine manuals I downloaded tell what to do, but don't describe how.
The impeller looks visibly OK though was not removed for more inspection.
Raw water can pass OK to the start of the raw water pump (tested with manual pump).
Removing the cover and cranking engine for an instant shows the impelling rotating correctly.
Manually pouring water through a funnel into the raw water pump inlet hose enables starting with normal appearing water spitting out exhaust.
This narrows the problem:
The pump fails when inverting the raw water pump's inlet hose into a bucket of water - no water spits out the exhaust. The pump clearly should have enough suction for this.
I'm new to engines, particularly diesels, so I didn't take the pump apart yet. What should I be looking for? Is there a specific deflection / tension the v belt to the raw water pump should have? How do I extract the impeller without damage (for the future, this one has got to go after all this testing) for inspection? The engine manuals I downloaded tell what to do, but don't describe how.