I was recently gifted a 1977 Dufour
31 (thanks Charles), and this is my first real boat (we had a Flying Scot when I was a kid). I want to go through the engine
before I take it out for the first time. I don't think much maintenance
has been done to it over the last few years, though.
BD-20 diesel engine
(installed in 2008, around ~50 hours on the clock)
Twindisk TMC40 transmission
Vetus LP50 exhaust
500 fuel/water separator
Packless Sealing System stuffing box seal
Given this setup, and the boat having not been sailed in ~2 years, sitting in the water
the whole time, this is what I'm planning on doing for each component of the drive train:
Replace fuel filter
Replace oil filter
pump impeller (Beta)
Replace serpentine belt (Napa)
Drain/Fill ATF fluid (Rotella)
Inspect for rust
Replace filter element (Racor)
Replace cone and egg zincs on the driveshaft
1. Should I drain/refill the diesel fuel tanks
? The diesel in there has been in there for at least 2 years, I'd imagine.
2. How many quarts of oil
does the engine take? I can't find that info on the Beta Marine
website. What weight do you guys recommend?
3. The manual for the transmission uses the terms Oil and ATF fluid interchangeably. I should be using ATF fluid, NOT motor
oil, I'm assuming. How much should I buy?
4. Do I need to do anything with the stuffing box seal? The manual mentions doing something to it to introduce water between the seal mating surfaces if the motor
has been sitting for more than 3 months without running. I'm not sure how to do this.
5. Is there an air filter for this motor?
6. Is there anything else I'm overlooking?
The rubber hoses are all still nice and flexible, not hard, brittle, or cracked, and the hose clamps are all doubled up and offset, so I think the plumbing
is good to go.