Background: 1986 Catalina 27 with Universal M-18 engine.
I’m replacing some of the fresh water / coolant hoses (manifold reservoir to thermostat and fresh water pump to elbow).
Regarding impellers I’m reading they should be changed about every 100 hours but what I’m not clear on is this referencing raw (sea) water pump impellers or fresh as well.
There looks to be some old slight leakage around the fresh water pump gasket and the 2 inch bolt I removed at the bottom (hole where my finger is pointing in the photo) is somewhat rusted.
The boat maintenance records are patchy. I have an invoice for a fresh water pump from 2014. Engine hour meter stopped working at about 700 hours but with log book records I’m estimating the engine has about 1500 hours so I’m not really clear how many hours the fresh water pump has on it.
My questions are:
1. How concerned should I be about what looks like old slight leakage around the fresh water water pump gasket and bolt rusting?
2. Does a fresh water pump impeller need replacing similarly to a raw water impeller?
3. Does the fresh water pump need to be serviced (i.e. new gasket or impeller) or is it just replaced if there starts to be issues? Looks like a new pump would cost a little over $400.
Thanks.
I’m replacing some of the fresh water / coolant hoses (manifold reservoir to thermostat and fresh water pump to elbow).
Regarding impellers I’m reading they should be changed about every 100 hours but what I’m not clear on is this referencing raw (sea) water pump impellers or fresh as well.
There looks to be some old slight leakage around the fresh water pump gasket and the 2 inch bolt I removed at the bottom (hole where my finger is pointing in the photo) is somewhat rusted.
The boat maintenance records are patchy. I have an invoice for a fresh water pump from 2014. Engine hour meter stopped working at about 700 hours but with log book records I’m estimating the engine has about 1500 hours so I’m not really clear how many hours the fresh water pump has on it.
My questions are:
1. How concerned should I be about what looks like old slight leakage around the fresh water water pump gasket and bolt rusting?
2. Does a fresh water pump impeller need replacing similarly to a raw water impeller?
3. Does the fresh water pump need to be serviced (i.e. new gasket or impeller) or is it just replaced if there starts to be issues? Looks like a new pump would cost a little over $400.
Thanks.
