Mischief Managed
Guru
- Joined
- Oct 24, 2018
- Messages
- 713
- Location
- USA
- Vessel Name
- Mischief Managed II
- Vessel Make
- 1992 Tollycraft 44 CPMY
I removed my Onan 8.0 MDKD genset from my boat earlier this week. It normally resides under the cockpit sole and is not very accessible for service, for a biggish person like me. It has only had basic maintenance since new and after suffering a seized alternator over the Summer, I decided to go through it and make it more reliable over the Winter.
I will be replacing:
Starter (it's a nightmare to access in the boat and a new one from DB Electric is only 90 bucks)
Heat Exchanger (another nightmare to access and new is only 300 bucks from Lenco)
All integrated hoses and hose clamps (150 bucks)
External hoses and hose clamps, except exhaust hose, which was new in 2019 and is still in great shape. (100 bucks)
Coolant pump and thermostat (55 bucks)
Fuel filters
Oil and oil filter
Breather element (3 bucks)
Glow Plugs (16 bucks)
The belt and alternator are new already 75 buck from DB Electric and local parts store.
I will be rebuilding the raw water pump with a $220 kit.
I will be cleaning up all the corrosion I can get to and painting everything, including the sound shield.
It has a Kubota D950 3 cylinder diesel, so the engine is very rugged and reliable and I don't plan to open it up. I don't plan to do anything with injectors or injector pump, it runs fine and only has 1300 hours, plus they are easy to access.
Was thinking I should also replace the anti-vibration mounts, and generator bearings. Is there anything else I should do while it's out and easy to work on?
It really pays to shop around for parts. Cummins/Onan have ridiculous pricing. For instance: They want 40 bucks each for NGK 6325 glow plugs that I can get from Advance Auto parts for $5.30 each. DB Electric sells a brand new alternator for 68 bucks, Cummins/Onan gets almost $800 for that part. OEM HE is $900, Lenco sells theirs for $300.
I will be replacing:
Starter (it's a nightmare to access in the boat and a new one from DB Electric is only 90 bucks)
Heat Exchanger (another nightmare to access and new is only 300 bucks from Lenco)
All integrated hoses and hose clamps (150 bucks)
External hoses and hose clamps, except exhaust hose, which was new in 2019 and is still in great shape. (100 bucks)
Coolant pump and thermostat (55 bucks)
Fuel filters
Oil and oil filter
Breather element (3 bucks)
Glow Plugs (16 bucks)
The belt and alternator are new already 75 buck from DB Electric and local parts store.
I will be rebuilding the raw water pump with a $220 kit.
I will be cleaning up all the corrosion I can get to and painting everything, including the sound shield.
It has a Kubota D950 3 cylinder diesel, so the engine is very rugged and reliable and I don't plan to open it up. I don't plan to do anything with injectors or injector pump, it runs fine and only has 1300 hours, plus they are easy to access.
Was thinking I should also replace the anti-vibration mounts, and generator bearings. Is there anything else I should do while it's out and easy to work on?
It really pays to shop around for parts. Cummins/Onan have ridiculous pricing. For instance: They want 40 bucks each for NGK 6325 glow plugs that I can get from Advance Auto parts for $5.30 each. DB Electric sells a brand new alternator for 68 bucks, Cummins/Onan gets almost $800 for that part. OEM HE is $900, Lenco sells theirs for $300.
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