presto 6n ratchet assembly problem

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petermontg
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presto 6n ratchet assembly problem

Post: # 14617Unread post petermontg
Wed Apr 27, 2011 10:16 am

ok, small but big problem.

my rachet assembly wont engage when my cutterhead carrige is engaged.

it works fine when the carriage is not engaged.

i have taken apart and re-greased.

i have a thinking that the little spring inside has seen better days.

any help/thoughts would be great.

regards
Peter Montgomery
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peter(at)petermontgomerymastering.com

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piaptk
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Post: # 14624Unread post piaptk
Wed Apr 27, 2011 11:18 am

When you say ratchet assembly, do you mean the little knife? There is a little post on the back of the carriage that rides on the bottom bar that may need to be adjusted.

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JayDC
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Post: # 14634Unread post JayDC
Wed Apr 27, 2011 8:27 pm

i think he means the part that allows you to turn the handle to space grooves..
generally its for reproduction.. but i like to play wif it sometimes.. :P

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petermontg
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Post: # 14649Unread post petermontg
Thu Apr 28, 2011 11:44 am

the rachet assembly is the worm gear part on the left hand side.

feedscrew stops rotating when weight of overhead is placed on the feedscrew.

the part is 6n-38 i think in a presto manual.

i have adjusted the overhead carriage to have as little weight sitting on the feedscrew maybe needs more adjustment
Peter Montgomery
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Stereo cutter head wanted. Send email or smoke signals.

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petermontg
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Post: # 14747Unread post petermontg
Thu May 05, 2011 10:55 am

Problem solved . Change to lithium grease for ratchet the heavier grease seems to have sealed the gear and stopped from spontanously stopping.
Peter Montgomery
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peter(at)petermontgomerymastering.com

Stereo cutter head wanted. Send email or smoke signals.

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petermontg
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Post: # 15605Unread post petermontg
Sun Jun 26, 2011 2:17 pm

this problem has re-surfaced

any ideas?????
Peter Montgomery
+353(0)894926271
peter(at)petermontgomerymastering.com

Stereo cutter head wanted. Send email or smoke signals.

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Fela Borbone
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Re: presto 6n ratchet assembly problem

Post: # 48785Unread post Fela Borbone
Wed Dec 27, 2017 5:28 pm

Hello Trolls,
I'm trying to repair the ratchet of a 6n. I unscrew rhe 3 screws that hold it toghether( are they?) But the thing dont seem to open...Can it be opened? Any ideas about how to do it are welcome...before I get mad with the torch and hammer!☺
Thanks for reading.

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petermontg
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Re: presto 6n ratchet assembly problem

Post: # 48789Unread post petermontg
Thu Dec 28, 2017 8:41 am

Hi Fela,

It should come apart with a bit of effort.

A good cleaning and re-grease of the ratchet solved the issue for me.

Best
Peter
Peter Montgomery
+353(0)894926271
peter(at)petermontgomerymastering.com

Stereo cutter head wanted. Send email or smoke signals.

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Fela Borbone
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Re: presto 6n ratchet assembly problem

Post: # 48794Unread post Fela Borbone
Thu Dec 28, 2017 4:43 pm

Thanks for your answer,Peter,
The ratchet was filed with epoxi! But managed to open it with no damage to other parts.
Here's a pic if somebody wonders how it looks like:
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sameal
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Re: presto 6n ratchet assembly problem

Post: # 48796Unread post sameal
Thu Dec 28, 2017 11:15 pm

The 8dg has a similar setup in the overhead.

Mine was in a similar condition, after years of sitting the grease solidified and had to be carefully scraped out with some "welding picks" i had. (Just a really cool pick set for some reason associated with welding at the local hardware store.)

What's odd is, i have never seen a new formula of grease do that. I wonder if it's like old formula rubber, where they perfected it as time went on. (Older rubber over time turns rock solid and crumbles away.)

Just a hunch. Nothing solid to back it up.

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