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Your right. And I do not see anything on the back of the card. Can you take a close up of the front?

Can you take the A4 card off the control panel wall and make a picture of the back side? An old friend of mine just wrote me that the A4 should have a diode soldered to the back side of the card, and its NOT in the schematic. I do not remember this, but the last time I worked on one of these...

For this kind of work, the -34 manual is perhaps best. All the connections, terminals and such are in one place along with wire numbers.For instance on PDF reader page #53, is the special relay box laid out, so you can see what wire goes from what plug to what place. Every interconnecting wire...

This is not an A4 card problem. K1 is not getting 24 VDC to the input side of the coil. I ned to think about your post #30, and maybe you need to not just check continuity, but test to make sure the right wire is connected to the right pin. Tell me what harness and or plug was cut off.

I think you need to relook the plugs and the wires. What plugs were cut off and replaced? Is there any other place that the wire harness was cut/repaired?

In the start or run position, do you have 24 VDC on S2-3?

The set runs, when you start it up normally? I am trying to see where you have VDC and where not.

OK, the A4 and relays worked right when tested out of the set? Then we need to see why the K1 will not work. Put A4 back into the set. Try and turn on the pumps with the set in the run position. Test A4-2. Do you have 24 VDC? If not, then turn S7 on. Do you have 24 VDC at A4-2? Another...

Still stuck on the A4 issue. I reheated the solder and smoothed it up some and rechecked continuity on the back of A4...still have it. No change on the front side with continuity between A4-7 and A4-9 or change in voltage to A4-9. Pulled the relay out of the fault indicator box, appears to...

If you have a soldering iron, remelt the trace. Sometimes it helps. If not, put the A4 back on the wall. Then take the K1 relay out. Spin it 180 degrees, and put it back in. Then test the A4 again for continuity on A4-7 and A4-9. Sometimes only one set of contacts stop working on these relays...

Roger. Check that out good. Also, its my fault, but we should have tested the contacts on A4, 7 & 9 differently. I should have told you to disconnect the wire to A4-7, tape the end off, and THEN mesure for continuity. If you did not remove at least one of the wires, you probably got a false...

Walk around to the left side of the gen set. Take the 4 nuts off that hold the A4 card to the back of the control panel. Pull the card forward and look at the back side. What do you see? A burnt trace on the back of the card?

OK, we are kookin with gas here. Now, hook everything up like it should be. Then push in CB1. Then place the S2 in the start position. Have someone else do that while you measure from ground to first A4-9. Got 24 VDC volts? If so, the pumps should run. If not 24 VDC on pin A4-9, then measure on...

Now we are getting someplace. Now we KNOW, that from A5-21, through CR6, through TB102-18, and all the way to the pumps, everything is good. We have no breaks and a good ground. Whenever troubleshoots a 60 KW, your best friend is TM 5-6115-545-12, PDF reader page 62. Take the two temporary...

Have you finished repair of the special relay box? If so, don't put the bottom part on. Leave it open. Take two pieces of wire about 2 meters long. put a ring connector on the end of both of them, on one side. Then attach them to terminals 21 and 23 of the A5 card. Hook up the S/P relay box...

Have you pulled out and tested FL-1 and FL-2 float switch? If the switch is not working right, the pumps can not function right. FL-1 is suposed to be open, to keep K8 from being energized. K8 is the low fuel shut off. FL-2 is the replenish circuit. It controls the L2. If the is colsed, then the...

J5-P wire P80B goes to TB101-6

The pin should push out. I will try and find that wire number and see where it goes and what it might do. Need to get at my computer to do that.

There is a lot I don't understand on the wiring schematics, esp the page 81 I referenced, so I may very well be overlooking something simple. Within the relay box I don't see a letter C or a letter Z in the "bar" connection (What is a Bar connection to you?) the "bar" across the bottom of the...

Dude, This is way too long. I will try and break it up a bit. But first, Do you have all the TM's for this set? If you down loaded them from here in SS, they are the best and most current. Once I finished servicing it, i was able to start the engine and it ran fine. I had to pull the...