[R-1051] R-1051

Cecil Acuff chacuff at cableone.net
Mon Jun 12 16:38:28 EDT 2006 

Sears would be my best guess....with a well equipped auto parts store a 
close second.

I don't ever remember removing one myself....Maybe to change the whole 
motor/gearbox assembly.  If you remove the two long screws that go in from 
the rear of the motor, the motor itself will come off of the gearbox and 
comes all apart. The part to be cleaned, lubed and reassembled is pretty 
much in the rear area with magnet in between it and the gearbox.  The 
gearbox can stay in place.

Make sure you put a mark on all the pieces stacked together to be sure you 
get it back together correctly or it may try to run backwards....

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 1:54 PM
Subject: Re: [R-1051] R-1051


>I decided to go ahead and take the motor out and do it right.  I am to the 
>point where I am trying to get the bevel gear off the shaft.  It is amost 
>off, but the end of the shaft has a burr and is not cooperating.   Also my 
>allen wrench is no good and I need to find another one.  I may have to 
>order one.  Can you recommend any sources?  It's a tiny thing.
>
> Larry
>
>
>
> Cecil Acuff wrote:
>
>> You might want to disconnect one side of the motor from the circuitry to 
>> prevent back feeding the motor driving electronics.  May not be an issue 
>> but just in case. If the motor were running though I would think you 
>> would have heard it.  The gear boxes make a bit of noise...less with no 
>> load but still enough to be heard I would think.
>>
>> 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 11:59 AM
>> Subject: Re: [R-1051] R-1051
>>
>>
>>> Cecil,
>>> I have the module out and opened up.  The bevel gear on the end of the 
>>> motor shaft is loose.   It is safe to tighten the bevel gear and put 28 
>>> vdc on the motor lead to test it?
>>>
>>> Larry
>>>
>>>
>>>
>>> Cecil Acuff wrote:
>>>
>>>> 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
>>>>>>> R-1051 at mailman.qth.net
>>>>>>> http://mailman.qth.net/mailman/listinfo/r-1051
>>>>>>>
>>>>>>
>>>>>>
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>>>>>
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