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Drip is visible in this sideways pic. |
Noticed a water leak from the engine water pump, researched it, and the camera confirmed the leak was from a weep hole. Which means a seal has failed. There are 2 seals in the Oberdorfer pump, one stops the raw water getting back into the motor, the other seal stops oil and gunk getting from the motor to the impeller.
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Accessory Drive w/water pump removed |
I removed the water pump - the hardest part is removing the lower bolt attaching the water pump to the housing, as the bolt is very hard to access. Used a paint can opener to get the old seals out. Got replacement parts from Moyer Marine - 2 seals, a gasket for the impeller cover, and a spare Impeller. The original impeller is just over a year old, and still in good shape. Total cost including shipping came to $78, and with UPS the packaged arrived the next morning (regular ground shipping).

I cleaned the pump pieces and rebuilt the pump with the new pieces, being careful to place a seal on either side of the weep holes and I cleaned and refilled the grease cup. Reinstalled the water pump and fired up the engine - everything seems to be working perfectly, and no more leaks. Nice.
While the pump was off I also cleaned the rust from that part of the engine and hit it with Loctite Extend to protect against more rust.
I have been testing the speedo for a few days now, testing the electrical connections, etc, and cleaning the connections. The impeller appears to be working, and the unit seemed in excellent condition when I opened it up, so I was unsure what to do. In testing at the weekend it seems to be working at higher speed, but jumps around a lot. But it is better than nothing, and I'll keep working on it.
Recently I also caulked in the refurbished depth sounder, and it is working fine, but gets confused in shallow depths.
Also last week I installed the auto pilot mount and tiller pin with epoxy, for a permanent installation.
I also made and installed the lee-board, and topped off the battery water (distilled).