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Old 02-13-2010, 04:51 PM   #1
T-Man
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E unit Drum Replacement

The 1666 motor checked out after cleaning on a bench test. I removed all wirirng from the unit and tested the coil. It was only two connections on each side of the e unit to the track. The pawl moved. Next I used the special spreader tool. There is a bar in the vicinity of the drum area. Once that was spread the sides opend up and the bottom plate of contacts fell out. Then it was a matter of alignment of the parts and pressing it back to gether. Once the rod was in it held the sides together.

The drum touches two plates one on top and one below. The secod picture shows the pawl, that moves the drum.
The two yellow seen go to the brush plate. The top plate left connection goes to the motor coil insulated lead, just behind the eunit up near the top( out of sight). The top plate right connection goes to the hot insulated lead to the top left. This is also the connection point to the e unit coil and the center roller from the track. To the right where the lever is, that is the e unit coils conection. Notice the metal rod just below the top insulated plate.

...

The new drum installed with the tool. The new connections.
...
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Old 02-13-2010, 04:55 PM   #2
big ed
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Is that a special spreader tool made for that purpose?
I have never seen one.

Or is it a T man custom made spreader tool you are talking about?
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Old 02-13-2010, 05:16 PM   #3
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The lever was loose so I found my ruler spring and with a v cut made a spacer. I had to use a razor blade to get under that sping pressure plate. I didn't cut myself luckily. It did the trick. The motor with new wiring but no center roller yet.

...
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Old 02-13-2010, 05:18 PM   #4
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That is an official e unit spreader tool. I got it out of NY for about 5 bucks with shipping. I have seen them as high as seven. One side spreads the other aligns the drum.

Normally the sides are very stiff but this one barely holds. It is just enough because it sits inside the motor frame anyway.
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Old 02-13-2010, 05:35 PM   #5
big ed
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OK...............

is that the actual tool in the picture sitting under the bracket frame?
or am I looking at the e lever switch?
is the tool pictured?
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Last edited by big ed; 02-14-2010 at 12:57 PM. Reason: spelling
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Old 02-13-2010, 05:46 PM   #6
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Tool

Most of it. I will do another one.



I added this pictue since it is a good one. I found it in another thread.
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Old 02-13-2010, 07:37 PM   #7
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Another one

I took on another e unit. This time I replaced both panels and the drum. The sides did snap out from the rod and I replaced the items. I already soldered the wires and noticed the replacement panel slot are loose. They are so bad the fingers can be lifted from the drum not good so I used super glue to hold them in place. That will take time to dry so it is not tested.
NExT DAY. The glue worked, no movement. Time to test.

The tool with the replacement parts.
...

The e unit opened and the removed parts.
...

The cover installed from the old piece to the new. The assembled e unit.


...

The last picture shows the motor coil connection and the middle roller connection.
...

I thought it would be harder. I procrastinated for some time about doing just one of them. I have one more, a spare that needs work.
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Old 02-14-2010, 12:38 PM   #8
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Test ans Torque

Today I am trying to get the shell on the catfish 1666. I cleaned up the pickup roller plate and installed it. It chipped on in a slot. I borrowed two slides and track tested.

Now, I try not to over tighten a screw. The engine stalled and I notice it didn't want to turn. The culprit was the back armature support where the gear connects. The two machine screws came loose. An easy fix but you have to be viligant to problems. Pics to follow later.
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Old 02-14-2010, 12:54 PM   #9
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What is the hooked end of the tool for do you know?

I got to look through my junks box I think I might have one of those.
If I do, I probably though it was a piece to a train or accessory.

I never rebuilt any e units I just swapped them out. I got a bunch in an auction once the seller said all but one worked. Got about 25 of them. Different types, $10.00 bucks with shipping as no one else bid. good deal.

(even though I didn't need them at the time!)

Thanks for the e unit lesson T.

Even though at times I am not commenting I am still looking and learning.
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Old 02-14-2010, 06:37 PM   #10
Boston&Maine
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T-Man, do you have part numbers for these two pieces, the drum, and the spreader tool?

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