Texasmark1
Well-known Member
I understand that Cummins bought Onan. Also understand that Cummins and Kukje, builder of the Branson tractor, partnered in building the A series of engines for use in Branson tractors..
I have a 2016 Branson 2400 and just discovered a second what looks to be a fill port on my A1100NA 24 hp 3 cyl engine. The first one is atop the valve cover where one would expect to find it. But an identical rubber/silicon/orange plug is atop a bulge in the side of the engine block (casting)to which the injector pump is bolted (mounted) . Pulling the plug and looking down into the cavity, you are looking down directly at the top of the injector pump drive gear and it seems to be a clear shot to the engine oil sump.
Nowhere in my published data received with the engine (user and chassis service) is the function of the lower port mentioned. I assumed it would be an oil fill port for locations where the upper fill port is unaccessible.
Knowing what I just found out about with Onan (surfing the www and here in YT, 2005 posting, this forum), and knowing that Kukje-Cummins were using the Onan original designs as an aid in developing the A series of engine Kukje-Cummins engines, I can speculate that it's a carryover from Onan power equipments used in motor homes and things of the sort where access to the top of the valve cover for oil filling is not practical so a lower level fill port was added......what else could it be? Not Front end oil, not trans hyd oil, I know where those fill ports are and there aren't any more oil sumps in the tractor.
Thanks for any time spent on this, including thoughtful speculation.
I have a 2016 Branson 2400 and just discovered a second what looks to be a fill port on my A1100NA 24 hp 3 cyl engine. The first one is atop the valve cover where one would expect to find it. But an identical rubber/silicon/orange plug is atop a bulge in the side of the engine block (casting)to which the injector pump is bolted (mounted) . Pulling the plug and looking down into the cavity, you are looking down directly at the top of the injector pump drive gear and it seems to be a clear shot to the engine oil sump.
Nowhere in my published data received with the engine (user and chassis service) is the function of the lower port mentioned. I assumed it would be an oil fill port for locations where the upper fill port is unaccessible.
Knowing what I just found out about with Onan (surfing the www and here in YT, 2005 posting, this forum), and knowing that Kukje-Cummins were using the Onan original designs as an aid in developing the A series of engine Kukje-Cummins engines, I can speculate that it's a carryover from Onan power equipments used in motor homes and things of the sort where access to the top of the valve cover for oil filling is not practical so a lower level fill port was added......what else could it be? Not Front end oil, not trans hyd oil, I know where those fill ports are and there aren't any more oil sumps in the tractor.
Thanks for any time spent on this, including thoughtful speculation.