1219/1229/1229Q Tonearm Removal

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dualcan
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1219/1229/1229Q Tonearm Removal

Post by dualcan » 24 Jan 2020 20:28

In order to repair a broken dearing ring on these three changers, there are ten steps to take in order to remove the complete arm.
As a guide to these ten steps shown in the 1219 Service Manual:
Step 1 to 10 E.jpg
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Attached are pictures for each step.

Step 1:
1a. Null Auflagekraft - Zero tracking force.JPG
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Turn tracking dial to zero.
1b. Single Umschalten - switch to Single.JPG
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Switch Single/Multi switch to Single.

Step 2: To prevent damage when unit is turned upside down a repair stand is best suited, There is a guide for a DIY stand in the Dual Service folder above, however a minimalist support cut from cardboard may also be used.
Once the unit is supported, flip it over.

Step 3:
3. Drähte ablöten - unsolder wires.JPG
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Unsolder tonearm leads

t.b.c.
k

dualcan
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Re: 1219/1229/1229Q Tonearm Removal

Post by dualcan » 24 Jan 2020 20:35

Step 4:
4a. Entfernen - remove.JPG
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Remove the c clip and the pin holding the main lever
4b. 207 - Entfernen - remove.JPG
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Remove the main lever
4c. 264 Entfernen - remove.JPG
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Remove the cueing rail
5a. 188 Aushaken - unhook.JPG
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Unhook the tension spring
5b. 215 Aushaken - unhook.JPG
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Unhook the Anti Skate spring. Be very careful not to damage this spring and make sure it is sealed (nail polish?) on the other end, before unhooking

t.b.c.
k

dualcan
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Re: 1219/1229/1229Q Tonearm Removal

Post by dualcan » 24 Jan 2020 20:42

Step 4 cont.:
5c. 233 Aushaken - unhook .JPG
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Unhook tension return spring for AS arm.

Step 5:
5d. Lösen - loosen.JPG
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Loosen guard plate screws
5e. 221 Entfernen -remove.JPG
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..and remove.

Step 6:
6a. 265 E Ring entfernen - remove c clip.jpg
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arm
Remove c clip from AS
6b. 227 Entfernen - remove.JPG
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..and remove.
t.b.c.
k

dualcan
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Re: 1219/1229/1229Q Tonearm Removal

Post by dualcan » 24 Jan 2020 20:53

Step 7: Remove the c clip and plastic washer, ..and the shut off rail. Please be careful not to loose the steel ball (159).

Step 8:
8a. 218 - 6.k.Mutter entfernen - remove nut .JPG
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Remove nut 218 holding the lift plate and segment.
8b. 211- 178 -212 Entfernen - remove .JPG
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Remove the upper pimple, c clip (for units over serial number 141.000) and the height adjusting sleeve.
8c 183 Entfernen - remove.JPG
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The lifting plate can now be removed.

t.b.c.
k

dualcan
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Re: 1219/1229/1229Q Tonearm Removal

Post by dualcan » 24 Jan 2020 21:03

Step 8 cont.:
8d. 181-Segment Entfernen - remove.JPG
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Carefully remove the segment and don't loose the two steel balls contained within the rubber ring

Step 9:
9. Gerät in Normallage - Unit right side up.JPG
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Flip the unit back to normal position.

Step 10: Switch the Single/Multi lever back to Multi, and rotate the outer dearing ring 50, counter clockwise.
10b. Tonarm abnehmen - Remove arm.JPG
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The complete arm will now be removable by lifting it upwards. Be careful not to loose the spring that pushes the dearing ring upwards!

The next step will be to remove the outer dearing ring 50 from the Gimbal. For this there is a special tool required.

t.b.c.
k

dualcan
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Re: 1219/1229/1229Q Tonearm Removal

Post by dualcan » 24 Jan 2020 21:41

To remove the outer ring (50) from the gimbal, the crabeye tool :
100_4989.JPG
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is used with a small diameter screwdriver, to loosen the counter nut on top of ring 50, with the screwdriver then removing the needle bearing screw.
The outer ring 50 can now be slipped off:
9.JPG
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Shown are two rings; one original on the right and the other, repaired with the new shapeways part, prior to paint.

Once the shapeways part is at hand, it will need to be prepared and fitted to the old broken ring.
To see this process, go to my webpage:
http://www.dualcan.com/
and look under Service Tips for 1219...Dearing Ring 218 518 Repair.
Once the ring is repaired, then re installation process is simply carried out in reverse of the above outlined procedures.

Regards,
k

Dario
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Re: 1219/1229/1229Q Tonearm Removal

Post by Dario » 01 Feb 2020 14:02

Hi Dualcan,
I am working on my Dual 1219 in order to put it on service. I already unblocked speed control.
But ... unfortunately due to some troubles I bent the tonearm sometime ago. So I bought another complete tonearm with suspension.
I have a doubt if it makes sense to substitute only the tonearm can or substitute the complete tonearm assembly following your very useful 10 steps guide.
Question1: Making the hypothesis to change the can only, as far as I understood removing the counter nut and the needle bearing screw the original bearing setup (bearing pre-charge) is lost. So in this case will I be able to restore it without special tools ?
Question2: Are tonearm can interchangeable or it is better to mount a complete tonearm assembly avoiding possible matching problems ?
I read a great part of your suggestions on this site and in your site and I consider them quite precious for me in order to understand better the mechanics complexity.
Thanks in advance for your attention
best regards
Dario

dualcan
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Re: 1219/1229/1229Q Tonearm Removal

Post by dualcan » 01 Feb 2020 19:06

Hi Dario,
I would suggest replacing the complete arm, if the one you purchased has the outer dearing ring 50 attached.
I'm not sure what you are referring to as "can", I suppose you mean dearing ring item 50(?).
Removing 50 from the tonearm gimbal does indeed require a special tool to remove the counter nut 52 / needle point 51:
DSC00006.JPG
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The bearing play is barely perceptible and needs to be set properly.
The tool is available from dualfred:
https://www.dualfred.de/Standard-Parts/ ... on/?page=2

Regards,
Klaus

Dario
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Location: Milano

Re: 1219/1229/1229Q Tonearm Removal

Post by Dario » 02 Feb 2020 09:58

Hi Klaus,

first of all thank you for your immediate answer !

Yes I have the complete tonearm assembly:
20200202_100903.jpg
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Sorry for the not meaningful term "can" , I try to explain better: my idea was to subistitute only this section:
ScreenHunter 4730.jpg
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in other words dismountling the arm complete of its headshell from the suspension ring with the special tool , you mentioned. In this way I will avoid to dismount completely the tonearm from the base facing possible anti-skate problems. Following this option I have this doubt that remounting the arm with special bearing screws (53) I will not be able to set properly the the bearing charge (how much torque ?) with the risk to tighten too much the bearings and in this way increasing bearings vertical friction of the arm.

Thanks so lot for your attention !

Have a nice weekend !

Dario

dualcan
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Re: 1219/1229/1229Q Tonearm Removal

Post by dualcan » 03 Feb 2020 17:09

Hi Dario,
There is no problem in replacing the tonearm (item 56) as you outlined.
You will certainly have less parts to deal with. There is however the same danger in re setting the bearing play. A further frequent problem is damaging the bearing covers, if the needle bearings are not introduced into the bearing cages properly whereby the bearing cage and cover can easily be damaged:
100_5246 LIGHT.JPG
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On this tonearm, the bearing pin not only damaged the cover, but also damaged the bearing cage, as can be seen at about 2o'clock position in the picture of the raceway above.
This bearing race subsequently needed to be reshaped and polished with a diamond ball tip to get the raceway clean and proper shaped again:
100_5247.JPG
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Once that raceway was viable, it still had no cover to hold the steel balls, meaning the arm had to be mounted with an open raceway, which is a serious test on the nerves... The four or five steel balls are less that one mm in the 1219, if memory serves.
If you are confident and able to reset bearing play and remove the arm from the gimbal ring after un-soldering the wires, then open 58/57 first, then 53 which is left hand threaded. The arm can now be slipped out towards the back of the chassis.
Regards,
k

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