MarshallPowerGen
Senior Member
- Joined
- Nov 26, 2017
- Messages
- 442
- Location
- Northwestern USA
- Occupation
- Generator Technician & Equipment Mechanic
Have an oddball issue on an Atlas Copco air compressor with the always fun Deere Powertech 2.4L 4024.
Came in for shutting down on low oil pressure, hooked mechanical gauge up and confirmed it starts up, runs up to temp and holds 55psi, then drops to zero. Pressure comes right back up at restart, then drops after a minute. Service manager recommended replacing the engine, but I got stuck with tearing into it and was told to pull the engine and check the pump and pickup.
No glitter in the pan or oil, pickup tube O-rings were good, no RTV or dirty bits in the pickup, opened up the oil pump (built into everyone's favorite front cover) and found a small groove going through. Opted for a new front cover (w new oil pump and relief valve) and new pickup o-rings, checked and cleaned everything, serviced the engine. Started up, ran for 10 minutes and then exact problem. Holds 55psi, then suddenly drops off. Start right up again, will hold 55psi, then drops after a minute or two.
Looking where to even begin to start? Any oddball stuff in the oiling system in these?
Came in for shutting down on low oil pressure, hooked mechanical gauge up and confirmed it starts up, runs up to temp and holds 55psi, then drops to zero. Pressure comes right back up at restart, then drops after a minute. Service manager recommended replacing the engine, but I got stuck with tearing into it and was told to pull the engine and check the pump and pickup.
No glitter in the pan or oil, pickup tube O-rings were good, no RTV or dirty bits in the pickup, opened up the oil pump (built into everyone's favorite front cover) and found a small groove going through. Opted for a new front cover (w new oil pump and relief valve) and new pickup o-rings, checked and cleaned everything, serviced the engine. Started up, ran for 10 minutes and then exact problem. Holds 55psi, then suddenly drops off. Start right up again, will hold 55psi, then drops after a minute or two.
Looking where to even begin to start? Any oddball stuff in the oiling system in these?