Rowe AMI Cadette CMM1 restoration - help needed

[viperz]

Hi all,

I need some help with restoring record changer in CMM1 Cadette. It has been sitting for many years with some record changer parts disconnected, removed, and turntable motor cut off.

I put it together mostly and slowly going through it cleaning, unsticking and oiling moving parts. 

I found where most of the loose parts fit, but not 100% sure if I have all the parts. I am also not sure where one part fits.

1) I think I figured out where this glass cutoff switch goes, but I'd appreciate any feedback - it was loose sitting under the whole assembly.

2) I have no idea what the metal part is and where it goes. I would appreciate any feedback on this one.

Thank you!


(for some reason I cannot attach even small 500KB pictures - getting this error - Unable to upload file IMG_20200630_204043s.jpg.
Error: This forum has exceeded its attachment space limit. Your file cannot be uploaded.)

[viperz]

I uploaded files to my google photos shared album:

photos.app.goo.gl/iZviYgJ3UiLphQPMA

1st photo - metal part that I don't know where it goes

2nd photo - metal lever to the side of the tonearm that I think is supposed to connect to arm raising mechanism - I am not sure what its initial position should be (over the big silver axle to the left?)

3rd and 4th photo - glass cutoff switch - I think where I have it in 4th photo is where it's supposed to be, but I am not sure how it functions.

Thank you.

[Ron Rich]

Please read the FAQ's section on how to attach a photo--
Do you have the parts manual for this phono ? Only one I recognize is the end of record cut off (magnetic) switch. Ron Rich

[viperz]

Hi Ron, thank you for chiming in.

Yes, I bought full service manual for this jukebox. I already replaced all electrolytic capacitors in the amplifier and junction box section, and checked all circuits in those chassis...

Where can I read how that glass cut-off switch works? I have restored quite a few idler-drive tables, but never worked on a record changer from a jukebox. Thank you.

(I did go through every mechanical blow-up in the service manual, and still cannot match that metal piece to any assembly unfortunately).



So far I am planning to clean and oil all moving parts, reinstall the motor back in (someone cut off the wires and it was just sitting in a box for some reason; I oiled the bearing, hooked it up to 110V, and it spins evenly and quietly on the bench)... I also need to figure out how that arm raising mechanism works in one of the photos - where the lever should be reinstalled. 

[Ron Rich]

Hi Eugen,
You are just going to need to read & follow what's in the manual-- the mag switch attaches under the tone arm--somehow-- I am not too familiar with that style mechanism--- Hopefully Alan, will chime in--- Ron Rich

[viperz]

The black spring-loaded lever in 2nd photo - I think it should go over the big silver shaft that drives gears for the record carousel?

[Ron Rich]

Hi Eugen
You are correct-- You can see where it has scared that cam--later cams were covered with a thick piece of either Teflon, or "plastic" material, to prevent that digging in. Be sure the cam is free of rust in that pivot point-- a slight coating of "TIOMO" is suggested ! (See our FAQ's for TIOMO !) Ron Rich

[viperz]

Thank you, Ron. Looks like I will have to unscrew the whole tonearm assembly to carefully move this lever where it belongs. Good thing previous owner only attached it back using 1 screw out of three or four lol...

I'll clean the cam as suggested. I had to use WD-40 to (very carefully) unstick the black lever, because it was completely stuck in place - I clean everything off later with 99% isopropyl alcohol and will oil the lever moving point with proper oil.

Regarding the cutoff switch - yes, I found two mounting holes under the tonearm, which match holes on the mounting plate of the cutoff switch. I just don't understand how it works - will go take a look at electrical schematic.

[Ron Rich]

Eugen,
IMHO WD-40 is good for only one thing-- exactly what it was designed to do-Displace Water- (Water Displacing formula #40)- Do not rely on it for anything else ! Cut off switch relies on a magnet being attached to the underside of the tone arm-- closes switch at recrd's end , which "informs" the gripper motor to start to transfer record from TT to basket. Ron Rich

[viperz]

Ron, I totally agree with you on WD-40. I very rarely use it, and when I do - I wrap the seized area with paper towels before slowly applying WD-40. Then when the part is moving again, I completely wash everything off with iso alcohol before reoiling/relubing with proper stuff.

You're right about the big cam - it is quite rusty - I will have to go and see if I can buy something mild to remove that surface rust... I have rust-removing jelly, but that stuff is acid-based and is stupid strong, so no chance I'll put it near plastic gearing and rubber parts.



I unscrewed the tonearm assembly and moved the lever above the big silver cam. Will have to see how it operates...


Thank you so much about information on the cutoff switch. I may have to rethink where I think it goes, because the bracket blocks another mounting hole when I put it over two mounting holes that I thought belonged to this switch.

I added a couple more photos to the album. One photo is of black metal lever sitting on top of the silver cam shaft - it looks to be spring loaded properly now. 2nd photo is of the cutoff switch where I think it should sit.

[Ron Rich]

Hi Eugen,
I much prefer "Tri-Flow, Liquid to WD--It comes in a "squeeze bottle", which has an extension option on it-- gets where it's needed without going elsewhere. Ron Rich

[viperz]

OK, pretty sure I got the cutoff switch in correct position...

I am going through all diagrams - there is some kind of "sensing wire" on top of the turntable spindle... I don't have that wire (neither do I have the retaining ring for it, but I am sure a regular C-clip should work?)... Will have to figure out if it is any special wire and where it goes . I added a photo to my album with diagram from service manual and photo of the platter and spindle.

[Ron Rich]

Hi Eugen,
Yes, it's "special"-- It's a case hardened trip wire for 33-1/3 rpm records-- not needed if you don't want to play 33's.
Ron Rich

[viperz]

Thank you, Ron. Looking at the diagram and following the circuits, I see that this trip wire triggers the microswitch under the platter - that microswitch must determine (based on record hole size?) the speed to play this record. I found a few videos with this jukebox playing 45s, but I can't find any playing 33.3.. As you said, it is a hardened wire, so if 33.3 record is dropped onto the platter, the hooked portion of the wire must slide down into the 45rpm adapter, thus holding the microswitch engaged.

[Ron Rich]

Yep-- You got it ! Ron Rich