Outrageous resonance from Dillon XL750

[Srikaleak]

When actuating the press I get a loud and annoying resonance from my press. I have pin pointed it to the screw that holds the case insert cam slide block. How the heck do I quiet the vibration?

The sound occurs in the middle 1/3rd of the stroke as I lower the ram. I know the sound is coming from there, specifically the screw, because if I place my finger on the screw to dampen the vibration the noise does not happen. Does anyone else have this issue?

 

[spife7980]

How the heck do I quiet the vibration?

I place my finger on the screw to dampen the vibration the noise does not happen

Seems youve answered your own question, sherlock

Jk lol

 

[Srikaleak]

If I had an extra finger I'd cut it off and tape it to the screw. Maybe my pinky toe will suffice?
Seriously though, any common ways to dampen vibrations? I tried electrical tape and it did not work. I'm probably going to shove a bunch of grease in that cavity next.

 

[Threadcutter308]

That seems very, very odd, but OK.....

Couple of suggestions;

1. Try replacing the existing screw with another/different head type, eg; Phillips, round head hex. Get some weight out of the head of the screw.

2. Remove the existing screw and grind one thread worth of shank off of it, replace and retry. Disrupt/alter the natural resonant frequency.
3. If you don't adjust the screw, degrease area and cover it with silicone cement.

 

[Huskydriver]

Man I have never had a noise from there but I'm wondering if it's because I run an aftermarket aluminum block so I can turn case feeding off and on easy

 

[ZY100]

Did you try putting some grease (not oil) on the threads...then re-installing the screw? But also, just because it stops when you put your finger on it, does not mean its actually coming from there.

Good luck, tracking down gremlins can be frustrating.

ZY

PS...Just saw this is what you are going to try to do next. Don't fill the cavity...just grease the treads.

 

[spife7980]

Maybe my pinky toe will suffice?

 

[Huskydriver]

View attachment 7444378

John goodman nailed that role... That scene is hilarious

 

[Srikaleak]

But also, just because it stops when you put your finger on it, does not mean its actually coming from there.

Good luck, tracking down gremlins can be frustrating.

ZY

Yup, you nailed it. I went ahead and disassembled it further and greased up the bar that the case insert slide cam slides on.

That resonance is pretty much gone. After 30 pulls of the lever I can hear the noise come back so I'll need to find a more resilient grease. I'm glad I found a solution. Hearing that sound 1000s of times while reloading 9mm was driving me nucking futs.

I appreciate the help folks.

 

[TheOfficeT-Rex]

WRT: grease, I use graphite for the primer slide, and it seems to run well. May be another option.

 

[Whiskey Tango Foxtrot]

Man I have never had a noise from there but I'm wondering if it's because I run an aftermarket aluminum block so I can turn case feeding off and on easy

Have a link for this? sounds handy..

 

[Huskydriver]

Have a link for this? sounds handy..

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