yeah Im still here:P
I finally got the old Holman Diesel powered air compressor running again.
The guy I got it from said it ran, but doesnt anymore. I found that the injection pump had all but rusted together from the inside. This was after trying to get it to pump fuel for an hour or so. I took it off and tore it apart. Making sure to put scribe marks on everything.
I ended up soaking all but the finely polished pistons and cylinders in a phosphoric acid bath for over a week to kill the rust, and break everything loose again. It then took a hammer still to knock things free. Lots of atf to flush out the dirt too. I bought new seals for both ends, and made new gaskets for the case, and the fuel pump.
Painted it today, and baked it it the sun for most of the day.
I got it put on and primed the fuel lines. By the time I went to start it the battery was complaning about the full compression since I closed the compression release on the block. But once I got it to crank over fully, it fired up in 3 cranks after sitting for over 20 years! Huge cloud of black smoke billowing out.
I need to rerset the govenor rod I think, as it seems to not idle great (Too fast). The cut lever works to idle it down at least, and its a really strong engine still.
Now its onto deciding if I want to put this in my old travelall, or sell the whole compresser.
Its I think a 100cfm. It was lifting the safety on the air side at idle with a valve 1/2 open :p
The guy I got it from said it ran, but doesnt anymore. I found that the injection pump had all but rusted together from the inside. This was after trying to get it to pump fuel for an hour or so. I took it off and tore it apart. Making sure to put scribe marks on everything.
I ended up soaking all but the finely polished pistons and cylinders in a phosphoric acid bath for over a week to kill the rust, and break everything loose again. It then took a hammer still to knock things free. Lots of atf to flush out the dirt too. I bought new seals for both ends, and made new gaskets for the case, and the fuel pump.
Painted it today, and baked it it the sun for most of the day.
I got it put on and primed the fuel lines. By the time I went to start it the battery was complaning about the full compression since I closed the compression release on the block. But once I got it to crank over fully, it fired up in 3 cranks after sitting for over 20 years! Huge cloud of black smoke billowing out.
I need to rerset the govenor rod I think, as it seems to not idle great (Too fast). The cut lever works to idle it down at least, and its a really strong engine still.
Now its onto deciding if I want to put this in my old travelall, or sell the whole compresser.
Its I think a 100cfm. It was lifting the safety on the air side at idle with a valve 1/2 open :p