[R-1051] R-1051

[Cecil Acuff]

It is tedious but the motor can be disassembled, cleaned, lubed and 
reassembled.  I usually us an abrasive pencil eraser to polish the comutator 
and spray degreaser to clean everything up.  There is a gearbox on the top 
end that a few drops of synthetic oil should be placed in where the motor 
shaft enters as well.

That should fix your problems with tuning....

Cecil....
----- Original Message ----- 
From: "Larry Kirkland" <lkirkland at sc.rr.com>
To: "R-1051 Discussion Group" <r-1051 at mailman.qth.net>
Sent: Monday, June 12, 2006 9:27 AM
Subject: Re: [R-1051] R-1051


> Cecil,
> You are right about the other motor.  I cannot hear it running after the 
> RF deck motor stops.  I will check it out and let you know.
> 73's
> Larry W4LK
>
> Cecil Acuff wrote:
>
>> The problem is you have a stalled motor in the Mhz synthesizer module of 
>> the six pack.  There are two motorized things in the radio...one the 
>> turret in the RF deck...easy enough to check...you can watch it go round 
>> and round. The other is not so easy...it's a motor driven crystal 
>> oscillator switch. If the motor stops you will only get one band to 
>> function.
>>
>> When you tune the Mhz on the front panel in one direction the RF deck 
>> moves only one step if you move the knob the other direction the RF deck 
>> runs much longer to do a full rotation.  Turn the knob the direction the 
>> direction that results in single steps and after it stops you should hear 
>> the crystal switch motor running for a few seconds after the RF decks 
>> stops.  If you don't hear it that confirms the motor problem.  The only 
>> problems I have seen from code generator is where the thing either stops 
>> on the wrong frequency or won't stop the motors at all.  The code 
>> generator and encoder switches in the Mhz module of the sixpak and the 
>> base of the RF deck form open seeking circuits.  I've had one of the 
>> metal bushings that separates the layers in the code generator short 
>> against a trace on one of the circuit boards resulting in no right answer 
>> from the encoders so it would just spin the motors until you turned it 
>> off or selected the one frequency that shorted that trace anyway.
>>
>> I think your problem is a stalled motor....
>>
>> Good Luck
>>
>> Cecil...
>> ----- Original Message ----- From: "Larry Kirkland" <lkirkland at sc.rr.com>
>> To: "R-1051 Discussion Group" <r-1051 at mailman.qth.net>
>> Sent: Monday, June 12, 2006 8:32 AM
>> Subject: [R-1051] R-1051
>>
>>
>>> I have been working on a R-1051B here that I got recently.  It works 
>>> only on the 4 MHz range.  The code generator switch A2A7 is putting out 
>>> a tune relay ground on all ranges but the 4 MHz range.  I have checked 
>>> the other outputs of the code switch and they are correct.
>>>
>>> Is it advisable to disassemble the code generator to look for the fault? 
>>> The manual says it is not field reparable and offers no other info about 
>>> the device.
>>>
>>> Thanks,
>>> Larry W4LK
>>> _______________________________________________
>>> R-1051 mailing list
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>>> http://mailman.qth.net/mailman/listinfo/r-1051
>>>
>>
>>
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>
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