Help/Advice on MEP-003

[TroyHog]

I have a MEP-003 that I changed the tap from single phase 120/240 over to the three phase 120/208 - It turned fairly hard and it seemed like it went past the position before it switched. I ran the genset and got the proper voltage readings off of L1,L2,L3,L0 but the tap changer liked locked down and will not return to the previous settings. The knob will detent a little more to the left but will not switch to the right at all now. I was just wondering if this was a concern or if I was missing some kind of "release"? I hate to apply any more pressure than I have for fear of breaking something.

 

[DieselAddict]

Give these threads a read and see if they help. They should point you in the right direction to get the switch going.

http://www.steelsoldiers.com/showthread.php?98139-5k-broken-reconnect-switch

http://www.steelsoldiers.com/showth...uel-system-clean-up-re-connection-switch-fix)

 

[TroyHog]

Thanks! I bought a ECU and am trying to heat/cool my shop with the combo - so I'll tear the switch down after I get my testing done.

 

[Triple Jim]

Don't tear down the switch, lubricate it very carefully without taking it apart!

 

[DieselAddict]

Don't tear down the switch, lubricate it very carefully without taking it apart!

What he ^ said.

 

[cuad4u]

After PB Blaster I used a brass rod (3/4" X 12") and a small hammer to rap the metal nose of the switch and patience and doing it again and again. After doing this for 4-5 stuck switches, each switch got un-stuck.

 

[jamawieb]

Like everyone else said, don't take it apart. I take the side panel off so you can see the switch and soak it in WD40, then slightly tap on both ends of the switch, while trying to turn it. Patience is the key, sometimes takes about 30 minutes to break lose. After it moves, rotate it between all positions several, several times.

 

[Guyfang]

If you ever take this switch apart, you better be retired when you do it. You will need the extra time! TLC, gets it most of the time!!

 

[TroyHog]

Like everyone else said, don't take it apart. I take the side panel off so you can see the switch and soak it in WD40, then slightly tap on both ends of the switch, while trying to turn it. Patience is the key, sometimes takes about 30 minutes to break lose. After it moves, rotate it between all positions several, several times.

Thanks Guys. So do I need to take the switch loose from the housing (four bolts if I remember), or can I leave it mounted. I guess what I'm getting at is - Where do I need to apply the lubrication? - I know - I know - That's what she said. Ha.

 

[jamawieb]

Don't take anything loose, just spray the entire switch with WD40 (all over it).

 

[dependable]

Thanks Guys. So do I need to take the switch loose from the housing (four bolts if I remember), or can I leave it mounted.

When I freed my switch, I loosened but did not remove the switch, to gain access to the four nuts at front plate of switch. I loosened the nuts slightly but did not remove. I was then able to rotate the switch with vise grips. I had already broken off the knob trying to rotate switch. I also sprayed down the switch with CRC power lube, like WD 40.

While you are in there, check the screws that attach the wires to switch, they can be loose on higher hour machines.

 

[TroyHog]

MEP 003 - Tap Changer Stuck

You helpful souls advised me to spray my tap changing switch down with penetrating oil and be patient and work the knob back and forth and to not attempt to disassemble this switch -

I am trying to follow - but the switch is sealed up like a starter with a solid housing and I can not figure out how to get the penetrating oil into the contacts.

Can anyone help me out further?

Thanks!!!!!!!!!

 

[Guyfang]

By Tap Changing Switch, do you mean the S6, Voltage Changing Switch? Haven't heard that phrase used in about 35 years, if not longer. That's still what I call it in my head.

OK, if we are on the same sheet of paper, you need to LOOSEN. Not REMOVE, the long screws that hold the switch wafers together. Just loose enough to get some Contact spray into the switch. You absolutely, positively, 100% sure don't want to take this switch apart, or let a few "extra" parts fall out. I don't know how old you are, but you probably are not young enough to put this switch back together in a normal life time. I have tried a few times. I like to think I have lots of patience. I tossed the parts away. Someone in the forum said he took one apart and put it back together and it worked. He should get a medal. I have had some luck using a small rubber hammer. I TAPPED the switch a little. If you wail on it, you might as well buy another someplace.

 

[doghead]

Please continue your original thread, rather than start a second one on a subject. (you've done it twice)

I've merged your second threads with the originals.

 

[GREENMV]

TroyHog, I have good working used one if you end up needing it. Free, just pay snail mail.

 

[TroyHog]

Please send detailed instructions for me - I would gladly do whatever I need to. Is it more efficient to continue a thread versus start another? I referenced the information that I obtained earlier in this new one so people would not start from scratch so to speak. I am not well versed in the "ins and outs" of the software. Too old; but let me know what I need to do (I'm sure you've done it more than twice).

 

[TroyHog]

Doghead: Please send detailed instructions for me - I would gladly do whatever I need to. Is it more efficient to continue a thread versus start another? I referenced the information that I obtained earlier in this new one so people would not start from scratch so to speak. I am not well versed in the "ins and outs" of the software. Too old; but let me know what I need to do (I'm sure you've done it more than twice).

 

[Guyfang]

Troy,

Go to the top of the page. Look for the Forum button. It should be highlighted any way. Click on it. When the new page comes up, scroll down to Auxiliary Equipment. Click on on it. When the new page comes up, look at the top of the page for the Start New Thread button. Click on it. Give your thread and intelligent name. Its good PR. You need to hook the generator guys into opening the thread, so they can help. Simply writing "It dont work" is not good. A good one might be, "MEP-003A- Voltage Selector Switch non-op", or MEP-003A- S8 switch non-op". Then give us some details to work with. This aint hard. Old Man indeed! How old?