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Re: Cummins air compressor

PostPosted: Thu Jun 21, 2018 2:05 pm
by cornbinder89
Pulled the damaged steps off. couldn't get the cab, up do to broken fittings on the lift cyl, Pulled to bumper and replaced temp with brass, as steel were not available. Come to find the radiator is leaking, likely a crack tube to header joint cause by the impact.
Now to see if I can get any money from the car's insurance.

Re: Cummins air compressor

PostPosted: Mon Jul 23, 2018 10:13 am
by cornbinder89
Got the truck in for an estimate, now its a waiting game with insurance companies fighting it out.

Re: Cummins air compressor

PostPosted: Sat May 04, 2019 2:44 pm
by cornbinder89
Brought it home from the body shop today, not done, but all the body/paint stuff that I can't do it finished. Needs a lower grill, turn signal, 3 tires and a windshield.
Still not sure on the radiator, but it is not leaking bad enough to worry about it for now.
After paying the body shop I have funds left over from the settlement to finish it without getting hurt.
It has been started may be 3 times in the 8 months it was down there, Fired right off. Says alot for the super capacitor.

Re: Cummins air compressor

PostPosted: Sat May 04, 2019 3:20 pm
by randemon
Glad to hear this is coming back together!

Re: Cummins air compressor

PostPosted: Wed Apr 01, 2020 9:30 am
by cornbinder89
Yesterday I modified the Delco 26 SI alternator. It is almost identical to the 25SI I did for the '89 so I didn't take more pictures, the difference is 26SI takes the little white "triangle" regulator instead of the circuit board regulator. The 26SI regulator is not adjustable, however so is not my 1st choice.
Both the 25 and 26 are semi-sealed, the two coils (field and stator) have air drawn over them by the fan but the rest of the electronics are in a gasketed and sealed area. To retain this property the case is drilled and nylon "stand off" insulators are installed in the holes with fiber washers to insulate the stud from the case. The field connection are in this way brought external to the case. The original regulator is left inplace and connected. In the 25SI I set the internal reg to 13.8 volts or about the "float charge voltage" on the 3 step "marine" regulator. This provides a failsafe if one or the other regulator fails, and also splits the field current between two regulators. It one of the recommendations the makes of the 'Marine" regulator recommends. I tried controlling with just their reg but had problems with it shutting down. Since running both I have not had a problem.
I also had to change out the pulley. It had worn to the point the belts were riding on the base of the groove and would slip. The "gray ghost" is living up to its name, outlasting several inframes and over 30 years.
Here are some pictures of the 25SI conversion.

Re: Cummins air compressor

PostPosted: Tue Apr 21, 2020 5:46 pm
by cornbinder89
Finely got the Marine regulator hooked up. I have been waiting for the Weatherpak connectors. The place sent the wrong ones, and is sending more, but it is take 10 days for the US mail to get a package from Pontiac, MI to western Iowa!
I am still waiting! So I hard wired it in and will have to cut and put the Weatherpak's in when they get here. That way I can make a harness on all my Delco Gray ghost alternators, and make it so any of them will interchange with any other, and just require the output, ground wires and then plug the harness.
If the marine reg goes out I can unplug it and the internal reg will keep the battery charged, just not as fast. If the internal reg quits the marine reg should continue to work.