MEP-06A reverse power warning and ckt brkr light stays lit

[Guyfang]

I would start with the CB2. Its easy. Four mounting screws, if they are there. Six nuts on the load wires. The C-Plug. Its out.

 

[Roadrunner concrete]

I would start with the CB2. Its easy. Four mounting screws, if they are there. Six nuts on the load wires. The C-Plug. Its out.

will do, appreciate the direction

 

[Roadrunner concrete]

I would start with the CB2. It's easy. Four mounting screws, if they are there. Six nuts on the load wires. The C-Plug. It's out.

So I pulled it and opened it up, one of the two microswitches is stuck down, and there is definitely some corrosion. the three contact points on the top are not all capable of contacting at the same time, look like they have arced a bit. Can I find a new one somewhere? I can clean it up but not exactly sure what its supposed to look like. I see a couple on ebay but I don't think they are the right one.

 

[Guyfang]

Sure. Look up the part number and NSN in the TM, plug it in your browser. See what comes up. Post your results here, if, or if you have no problems.

When the load contacts are arced a lot, its a sure sign that the set was:

1. Turned off, before CB2 was opened.
2. Had a lot of failures under load.
3. Had problems opening and closing due to corrosion.

 

[Roadrunner concrete]

Sure. Look up the part number and NSN in the TM, plug it in your browser. See what comes up. Post your results here, if, or if you have no problems.

When the load contacts are arced a lot, its a sure sign that the set was:

1. Turned off, before CB2 was opened.
2. Had a lot of failures under load.
3. Had problems opening and closing due to corrosion.

The inside is corroded I ended up snapping off several bolts taking it apart, and there was definitely arcing going on inside.

So the numbers on the side of the CB2 are
JCG-6001A
current amp- 350/POLE
FREQ Hz - 50/60/400
CONTACTS - 3PST NO
OPERATING VOLTS - 28 VDC
MAIN CONTACTS VOLTAGE VAC - 120/208 -240/416
MFG DATE 49/05

THE NSN number that I came up with is
5945-00-007-1147
Looks like there is one on eBay but leery about buying something that isn't tested.

I searched the forums and found where you replied to a fellow member stating that this part number is interchangeable with several others.
5945-01-165-1065
5945-00-007-1147
5945-01-010-5911
5945-01-021-4122

 

[Guyfang]

Good detective work!! They are all the same CB's. Completely interchangeable. How much for the ebay CB?

 

[Roadrunner concrete]

Good detective work!! They are all the same CB's. Completely interchangeable. How much for the ebay CB?

SO ALL interchangable?
The listing from ebay. price is 100.00

Prestolite JCG6001A Contactor 3PST-DB 350A 120/208V NSN 5945-01-010-5911 This is a used Prestolite JCG6001A Contactor 3PST-DB 350A 120/208V NSN 5945-01-010-5911- Came to us from the DoD with a condition code “A”

 

[Guyfang]

5945-00-007-1147 was not first generation NSN, but from the late 60's in any case. The rest of the NSN's are all good numbers for this part.

5945-01-165-1065
5945-01-010-5911
5945-01-021-4122
5945-01-021-2898 EDIT!!!!!!!!!!! New NSN

Below is a list of part numbers that all would work also. To the right is the cage code. Thats the name of who supplied it to the gov. I would also try each of them to see if you can find it cheaper.

70-501	30554
70-501-1	30554
70-501-2	30554
A3349918	80063
A3349918-1	80063
A3349918-2	80063
B301EA	74063
HB200A	24975
HB200A	7E656
HB200A1C4H	K0577
JCG-6001A	1R7H6
JCG6001A	24975
SA105C	74063
SD105C	74063

 

[Roadrunner concrete]

that is a comprehensive list! will see what i can find! definitely owe you a beer.
can I use a surface mount 75 amp breaker to replace the push pull that feeds the panel?
I ordered the one off ebay. will be here in a week.

 

[Guyfang]

that is a comprehensive list! will see what i can find! definitely owe you a beer. (no cheap American beer!)
can I use a surface mount 75 amp breaker to replace the push pull that feeds the panel? (Why not. But 75 amp is a little big. Its suposed to be 15 Amp. if I remember right. )
I ordered the one off ebay. will be here in a week.

 

[Roadrunner concrete]

that is a comprehensive list! will see what i can find! definitely owe you a beer. (no cheap American beer!)
can I use a surface mount 75 amp breaker to replace the push pull that feeds the panel? (Why not. But 75 amp is a little big. Its suposed to be 15 Amp. if I remember right. )
I ordered the one off ebay. will be here in a week.

In the TM nsn # 5925-00-686-3298 description says 75 amp. maybe 7.5 amp?
MS25244-7 1/2

 

[Guyfang]

YES!! Now I remember. 7.5 AMP.

Just checked to make sure.

MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE

7 1/2 AMPERES AC SINGLE LOCATION AND 7 1/2 AMPERES DC SINGLE LOCATION

 

[Guyfang]

There are several NSN's and part numbers if you want them.

 

[Roadrunner concrete]

There are several NSN's and part numbers if you want them.

no not really stressing over this. I just want it to work correctly and I can wire in a 7.5 panel mount breaker.
you say cheap american beer...I have no idea whats cheap or not i am allergic to hops so never got into it.

 

[Guyfang]

I drink GREAT German and Czech beer. So the mass produced beers are what we call cheap beer, even if the price is high. Not to worry. Unless you are coming over here, its not going to be a problem. Postage is a Killer!!

 

[Roadrunner concrete]

I drink GREAT German and Czech beer. So the mass produced beers are what we call cheap beer, even if the price is high. Not to worry. Unless you are coming over here, its not going to be a problem. Postage is a Killer!!

yeah but its pretty amazing what can be delivered locally. I have read through a lot of peoples posts about problems they are having and you are a Huge resource. should be celebrated.

 

[Guyfang]

Then Prost!

 

[Roadrunner concrete]

Then Prost!
View attachment 912241

took a couple of years of German in high school... a long time ago... Looks like a good beer..

I received the new CB and installed it.
Started the unit and it now runs for a second and the circuit breaker pops. I turned the battle short on and flipped the switch to run. I can hear the fuel pump run and then about 10 seconds the circuit breaker pops, if I hit the circuit breaker switch I can hear it click and close. and by circuit breaker I mean the 7.5 amp push-pull one that I can't pull but apparently It works. guess I'm chasing the next step.
When I disconnected the wiring I labeled and ziptied the small wires to the large wires and labeled and took pictures. before during and after. Dont think I messed anything up there.

 

[Guyfang]

Pull the wires out of the two Electric Fuel pumps and try and start the set. They go bad , and the CB1, (7.5 amp) should pop. That is the first place I would start. What ever is causing the short, is something that is needed in the run position.

 

[Roadrunner concrete]

Pull the wires out of the two Electric Fuel pumps and try and start the set. They go bad , and the CB1, (7.5 amp) should pop. That is the first place I would start. What ever is causing the short, is something that is needed in the run position.

the machine will start and run. just not very long. and then the breaker pops. if its running would suggest its not the fuel pump?