AY 160 turntable issue

[prime]

Hi guys i have an issue with my turntable,  for A side records, turntable spins perfectly. When i try a B side, any B side it usually places the record  on the turntable and when the needle lands rejects it, I looked into all of the issues that can cause this but i dont think this is the usual culprit , like clutch or switch, the turntable moves in and out about eighth of an inch and i think this is causing the juke to reject the record. If i pull back on the record clamp abit the in and out stops and i can get records to play.  Can this be a bearing?  any thoughts appriciated.     

youtube.com/shorts/P8NiGST9FT0?feature=share      Not sure how to add videos to this forum but if you copy the youtube link and paste it in your browser you can see what the turntable is doing thanks pete

[jukeboxmarty]

Hi Pete,

The turntable shaft should not have that much play, so I would definitely start there.

On many mechanisms is an adjustment screw on the "thrust plate" (located on the end of the turntable shaft above the motor) which should be able to eliminate the play. Just make sure you loosen the lock nut before you twist the screw. Set the adjustment screw to eliminate the lateral movement, but leave it loose enough to ensure the shaft spins freely.

The Thrust Plate is shown on page 2431 of the manual.

If there is no adjustment screw on your particular thrust plate, the "thrust ball" may be missing, or incorrect washers have been installed on the turntable shaft.

-Marty

[prime]

Hi Marty, I was able to adjust the sloppy play and stop the issue with the movement. After which i find about half of the B sides play fine. I decided to re clean clutch area with biodegradable de greaser and then rinse with clean warm water. After its dry i will re oil all areas with blue 3in1. After which if this issue continues do you believe the clutch will need to be removed and all components cleaned, or may this be another issue. pete

[prime]

I removed the clutch but find it moves freely, also the main pin with the two clips on it spins freely. Im attaching a few photos, is there anything else besides the clutch i should deal with while its out? thanks pete

[jukeboxmarty]

I would make sure the detent arm lever (the lever that ultimately operates the safety plunger), and the transfer arm (gear segment) lever are also free.

I'd also check the roller on the detent arm lever, I'm finding a lot of these are stuck!

-Marty

[prime]

I will check that out before reinstalling the clutch, when there is a record playing on the B side i hear a light click with each revolution, not audible on A side plays. Any thought on what could cause this? ( with the clutch removed i spun the turntable each way and it feels smooth and tight)

[jukeboxmarty]

Could be a clutch adjustment. I assume you will do the clutch adjustments after re-assembly.

[jukenorman]

Is there a switch on the clamp arm on that model to initiate a reject if no record is loaded? Might require adjustment?

Norman.

[prime]

Hi guys as per Ron Rich mech guide when i put the clutch back in, he suggests putting 3 of the screws loosely, then move mech to the first record slot and manually trip the switch and while spinning the motor load a record, i did this and it
loaded the record. I then pushed the lever down and spun the motor buy hand until the record was returned and the scan engaged. I then moved the mech to install the last screw and tightened the others. I reinstalled the mech, I first let it scan to rest, then i selected an A side, carriage stopped at selected record but arm did not come up and turntable sat spinning, I rejected and tried B side , carriage stopped at selected record, arm did not lift but immediately it rejected as before. What did i install improperly

[jukeboxmarty]

Hard to say if you did anything wrong....

But did you go through the clutch adjustments?

When a record is in play position is it centered between the record dividers?

If the rack position has changed have you checked the contact block adjustment?

[prime]

Hi Marty after close viewing i noticed the lift arm was catching the record rack, as per Ron Rich instruction in his mech book, i removed the short track that the mech travels on, moved mech off track, changed mech direction and slid it back on the track skipping one tooth, as usual he was correct, now records lift again. I also tried to re adjust the switch under the record clamp. I can select a few B side but still have a few eject without playing, I may try to readjust the clutch as per manual to see if it fixes it. Unfortunately, somewhere along the way i lost sound in both channels, On full i can hear abit and static,I pulled the mute plug no change, the 5u4 is lit, i will try another 5u4 but the manual states if this doesn't work it is a short in the high or low voltage supply, can you help getting me in the right location pete ( just checked definitely not the 5U4 tube)

[jukeboxmarty]

Good job!

I'm glad you caught the 'one tooth off' issue.... that's what I was getting at when I asked if the record was centered between the rack dividers.

-Marty

[prime]

Yes Ron is still helping, and you were right in your assessment of the problem. thanks ,any thought on the sound issue?

[jukeboxmarty]

As far as the rejecting on the 'B' side.....

Try holding down the manual 'trip lever' release when the record loads. If the solenoid causes it to 'buzz' against your finger the problem is electrical, otherwise it's mechanical.

[jukeboxmarty]

Since you disconnected the mute plug and still no sound it has to be an issue with the cartridge wiring or some other amplifier issue.

I'd check to see if any of the tone arm wires broke off during your clutch surgery!