Coleman Powermate 5000 -engine runs but unit will not generate -bad brushes suspected
I picked up a broken Coleman Powermate 5000 PM0525312.17 generator last night for a little more than the cost of the gas to go get it. This unit looks pretty used and abused but seems to have potential. The engine runs fine after a little TLC on the carb and the change of oil that was essentually a tar-like sludge. The generator doesn't generate as indicated by the guy I got it from.
I tore into the generator head after getting the engine stable. The first thing I noticed after pulling the back cover was that one of the brushes was completely MISSING and the pieces were laying inside the housing. I have a new set of brushes on order for $10 including tax/shipping but had a few questions. I found an entire parts manual as a .PDF online and have it downloaded.
1. Could this have damaged anything else like diodes or such? Is there anything I should do to the commutator before installing new brushes? The brushes have a part number of 0050439 and a description of "E-4R brush".
2. How do these engines rate overall? This is a 10HP Tecumseh and I have never been a big Tecumseh fan (seen too many explode on push mowers) but this seems to be a decent engine with some nice features. For example, this includes a cast iron bore and a low oil shutdown. I figured it would be burning oil and smoking after seeing the oil I changed in it but it seems to run fine and not smoke at all on the fresh oil. If I fix the gen, I need to get the air cleaner and a few other things fixed up but I am waiting for the unit to generate before doing anything else.
3. What is the suggested oil for these 10HP Tecumseh horizontal shaft engines? I put some oil I had laying around that was Briggs and Stratton 30W for small engines. I usually like to put 10W30 synthetic in all my small engines, especially those with overhead valves, but I figure I am going to change this oil out to "rinse" the engine from the neglected oil change if I get the unit generating. I also figure this is better than sludgy excuse for oil it came with, especially for the short term while I test and repair the unit.
Are there any other promises or pitfalls related to this generator or engine? I know nothing about the history of this unit besides that I can tell it was used and abused. I think they guy used it on jobsites so it didn't have an easy life. The pull cord starter handle is a large bolt with the rope tied around it.
I tore into the generator head after getting the engine stable. The first thing I noticed after pulling the back cover was that one of the brushes was completely MISSING and the pieces were laying inside the housing. I have a new set of brushes on order for $10 including tax/shipping but had a few questions. I found an entire parts manual as a .PDF online and have it downloaded.
1. Could this have damaged anything else like diodes or such? Is there anything I should do to the commutator before installing new brushes? The brushes have a part number of 0050439 and a description of "E-4R brush".
2. How do these engines rate overall? This is a 10HP Tecumseh and I have never been a big Tecumseh fan (seen too many explode on push mowers) but this seems to be a decent engine with some nice features. For example, this includes a cast iron bore and a low oil shutdown. I figured it would be burning oil and smoking after seeing the oil I changed in it but it seems to run fine and not smoke at all on the fresh oil. If I fix the gen, I need to get the air cleaner and a few other things fixed up but I am waiting for the unit to generate before doing anything else.
3. What is the suggested oil for these 10HP Tecumseh horizontal shaft engines? I put some oil I had laying around that was Briggs and Stratton 30W for small engines. I usually like to put 10W30 synthetic in all my small engines, especially those with overhead valves, but I figure I am going to change this oil out to "rinse" the engine from the neglected oil change if I get the unit generating. I also figure this is better than sludgy excuse for oil it came with, especially for the short term while I test and repair the unit.
Are there any other promises or pitfalls related to this generator or engine? I know nothing about the history of this unit besides that I can tell it was used and abused. I think they guy used it on jobsites so it didn't have an easy life. The pull cord starter handle is a large bolt with the rope tied around it.
