[NJARC] Phono help needed

[Bill Zukowski]

Thanks Phil and everyone else for your responses.

I figured it would be a lubrication issue, but everything seem to be 
moving freely.  I pretty much ruled out anything broken, as there's not 
one piece of plastic, unlike other "modern day" turntable that I've 
seen.   It does look like there may have been an attempted repair, as 
there is an over abundance of oil on everything.  I'm pretty good with 
mechanical repairs, having been a technician for Sony Superscope for 
about 6 years "way back" working exclusively on tape recorders, and 
repaired teletype machines in the army and while at AT&T.  Just thought 
this might be a common fault with this turntable.  Now...what's the 
difference between a pawl and a bellcrank...??

(If I get frustrated I could always go to the "pub" for a few and find a 
"lib", but why??)

Probably won't get back to it for a few days, spending allot of time 
with my wife after some surgery.  I'll post my progress.

Thanks again, Bill

On 5/22/2015 00:11, Phil Vourtsis wrote:
> Sounds like a binding trip pawl. It usually requires taking the sliding mech apart to get to the trip pawl which is underneath the toothed gear. Need to remove the old pub and put in fresh lib. Trip pawl must move freely to start the change cycle.
>
> Phil V
>
> Sent from my iPhone
>
>> On May 21, 2015, at 6:47 PM, Bill Zukowski <n2yeg at optonline.net> wrote:
>>
>> Just remember
>> Reply = Poster
>> Reply All = Everyone
>>
>> _________________________________________________________
>> I'm repairing (or attempting) to repair a Zenith Cobra-Matic turntable that's part of a ca. 1959 Zenith AM/FM/Phono console.
>>
>> The manual reject doesn't work, nor will it shut down at the end of the record.
>>
>> Looking at the attached photo, The problem is obviously the large gear (green) not rotating to engage the platter gear (blue).
>>
>> When the selector is moved to the Reject position, rod (yellow) moves and pushes against bar (red).
>>
>> Likewise, when the arm reaches the end of the record, the other end of bar (white) also engages bar (red).
>>
>> None of theses actions has any effect on gear (green).
>>
>> If I manually rotate large gear (green) to engage the platter gear (blue) all works according to Hoyle.
>>
>> The problem seems to be with the (red) bar.
>>
>> I did notice that the release in the spindle will not retracr to drop the record when I manually activate the mechanism, but I'm hoping that will be "small potatoes" after I figure out the main problem.
>>
>> I've searched but cannot find any literature on the mechanism.  Can anyone (Phil??) help?
>>
>> Thanks,
>> Bill
>> <cobramatic.jpg>
>> <cobramatic mechanism.jpg>
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