Rega arm cueing mechanism problem - diyAudio
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Old 1st March 2009, 12:06 AM   #1
KKG is offline KKG  Singapore
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Join Date: Jun 2004
Location: Singapore
Default Rega arm cueing mechanism problem

My apologies for posting this a little late.

Last night (15 January, 2009) while reading a thread about a guy having cueing mechanism ploblems with his RB250, I mustered myself and went about fixing my RB 300 cueing mechanism. It was around 12 midnight or thereabout, my fingers were covered with grease, WD 40, bits of tissue paper, when I finished the task.

Now the RB 300 lowers itself easily onto the record surface whereas it used to get stuck at any point of it's journey downwards and needed to be forced down by a gentle force on the lever. Lifting the arm off the record was also pretty stiff and used to affect the suspension of my deck making the stylus bounce a little on the record surface. The problem was that there was too much grease on the piston of the cueing mechanism. I'm sure that some of you guys who own any of the Rega arms may have this problem, if you do, read on.


To remove the cueing/lifting mechanism you -

1. First need to remove the 'lifter bar' with an allen key. Loosen the allen screw and gently wriggle the bar free.
2. Then you remove the plastic cap at the bottom of the chamber with a flick of the flat head screwdriver.
3. remove the metal top plate (this holds the cueing mech onto the armrest) with a small jeweller's screwdriver by gently pushing the screwdriver (while wedged in one of the two holes on the plate) in anti-clockwise motion. Once you've unscrewed this top plate, you can remove the piston assembly, be careful not lose the spring and the piston that is inside the chamber.
4. Push the piston downwards until the whole assembly/mechanism comes loose from the bottom, the lever is still attached to the piston's chamber, do not attempt to remove this. The piston can be removed from the assembly for cleaning.
5. Clean some of the grease off the piston and off the chamber. Leave some of the grease in the grove of the piston, if you clean too much of the grease off, the piston will drop down without any resistance. If you do remove all of the grease, you'll need to re-apply a little so there is a little resistance as the piston is pushed down by the weight of the tonearm.
6. Replace the piston into the chamber aligning it with the lever resting upwards.
7. Replace the spring and place the whole assembly back into the holder and screw the top plate back on, tighten it properly.
8. Replace the 'lifter bar' and the plastic cap and that's it.

I hope that this is of some help as this forum has been for me.

Thank you
Happy fixing and cheers!
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Old 24th March 2009, 03:49 AM   #2
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Join Date: Apr 2005
Location: Denver
Default cueing arm grease

Hi KKG,

What type of grease did you use for your cueing mechanism. It's very hard to find something comparable here in Colorado or U.S. for that matter.

Thanks
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Old 24th March 2009, 06:46 AM   #3
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Join Date: Jul 2005
Location: MY
This is the correct grease and I assure you it works well.
http://www.turntablebasics.com/silicone.html
1st item on the page.
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Old 24th March 2009, 06:56 AM   #4
KKG is offline KKG  Singapore
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Join Date: Jun 2004
Location: Singapore
Hello cormeister

I was lucky not to remove too much of the grease off, therefore not requiring any additional grease.

I do not know much about grease but recently bought some for another job. The one tube I bought cost me just S$2 for I think 50 grams (black coloured) from a hardware store and another one I asked and was quoted S$11 for about 50 - 80 grams (reddish/pink in colour) which came in a small glass jar, from a specialist ball bearing store.

Perhaps if you were to visit a hardware store, you can ask someone knowledgeable there the type of grease you should use in your application, show him the cueing mech.

Hope this is of some help.

Cheers
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Old 24th March 2009, 09:25 AM   #5
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Join Date: Jul 2005
Location: MY
Rega or Linn tonearm cueing mechanism require a viscous fluid/grease for smooth, positive movement with damping/drag so that it doesn't drop like a stone. Silicone grease of the right viscosity is most suitable and used here. A little goes a long way. To much and it may end up stuck. Cleanliness to the parts and when re-building is absolutely essential here. I've done many with all success, barring any that was beyond repair.
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Old 24th March 2009, 03:16 PM   #6
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Join Date: Apr 2005
Location: Denver
Default cueing arm fluid

Thanks to both for replying so soon.
I have already been to several hardware stores, but ended up using some Phil Wood high quality bicycle grease, it is very thick. However the tone arm still drops to fast, so I will try the Turntable basics stuff. I thought it might work but have not seen anything specific to Rega arms other than this site.
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Old 25th March 2009, 07:24 AM   #7
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Join Date: Jul 2005
Location: MY
Default Re: cueing arm fluid

Quote:
Originally posted by cormeister
However the tone arm still drops to fast, so I will try the Turntable basics stuff. I thought it might work but have not seen anything specific to Rega arms other than this site. [/B]
Exactly. Wrong viscosity and the thing drops too fast. I'd vouch the turntable basics stuff will be right one and work to a nice gradual drop, even better than the original Rega grease. That one tube will be sufficent for numerous repair jobs.
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