Re: Help, My AM thumbwheel radio won't tune
[Re: rarefish]
#1496120
09/04/13 12:37 PM
09/04/13 12:37 PM
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Joined: Aug 2003
Posts: 8,828
Houston, Tx
hemi68charger
master
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master
Joined: Aug 2003
Posts: 8,828
Houston, Tx
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Sounds like the nylon/plastic gear inside is broken. You should be able to remove the chrome face of the radio and then take out the roller. It will be hard to replace or fix the gear if it indeed is broken. Maybe there's a source for a replacement part?
TroyHouston Mopar Connection Club'69 Charger Daytona 440 - auto - 4.10 Dana (now with 426 hemi) '69 Charger 500 440 - 4speed - 3.54 Dana '70 Road Runner 383 - 4speed - a/c (now with 440)
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Re: Help, My AM thumbwheel radio won't tune
[Re: hemi68charger]
#1496121
09/04/13 12:58 PM
09/04/13 12:58 PM
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Joined: Feb 2003
Posts: 7,595
TX , NJ , FL
WINGCARS_6970
master
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master
Joined: Feb 2003
Posts: 7,595
TX , NJ , FL
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There might be a tension screw .I kinda recall having same issue .Big Money Lewis restore mopar radios check him out
1969 Daytona 440 L9B410772
1970 Coronet 500 383 Presently owned
1970 Superbird 440 U 166242
1970 Superbird 440 U 174597
1970 Superbird 440-6 V 179697
1970 Coronet RT 440 U 224126
1968 Road Runner 426 J 134509
1970 Daytona Replica 318 G 178701
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Re: Help, My AM thumbwheel radio won't tune
[Re: rarefish]
#1496124
09/04/13 03:29 PM
09/04/13 03:29 PM
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Joined: Mar 2003
Posts: 18,678
Fresno, CA
Jim_Lusk
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 18,678
Fresno, CA
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Quote:
I just took another look with the face plate off and I can see a small white plastic gear that is in the middle of the tuning thumb-wheel. It's that gear that is slipping when I turn the tuner wheel. I'm not sure if it slipping due to some down stream binding or if it has just come loose on the thumb-wheel. 
Trust me, it's the clutch. Take the top off the radio and you will see it...
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Re: Help, My AM thumbwheel radio won't tune
[Re: rarefish]
#1496125
09/04/13 04:36 PM
09/04/13 04:36 PM
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Joined: Jan 2003
Posts: 75,005
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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Quote:
I just took another look with the face plate off and I can see a small white plastic gear that is in the middle of the tuning thumb-wheel. It's that gear that is slipping when I turn the tuner wheel. I'm not sure if it slipping due to some down stream binding or if it has just come loose on the thumb-wheel.
I have seen that plastic gear split on more than one radio , I usually rob them from AM radios to fix AM/FM radios that were broken.
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Re: Help, My AM thumbwheel radio won't tune
[Re: rarefish]
#1496126
09/04/13 05:39 PM
09/04/13 05:39 PM
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Joined: Aug 2003
Posts: 8,828
Houston, Tx
hemi68charger
master
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master
Joined: Aug 2003
Posts: 8,828
Houston, Tx
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Quote:
I just took another look with the face plate off and I can see a small white plastic gear that is in the middle of the tuning thumb-wheel. It's that gear that is slipping when I turn the tuner wheel. I'm not sure if it slipping due to some down stream binding or if it has just come loose on the thumb-wheel.
When mine were bad, the gear was cracked, causing it to stretch and the teeth of the gears not engaging properly. I would slide the gear off and attempt to "super clue" it. It worked sometimes, but as well, just cracked again. Maybe with some precision, one can "plastic weld"..
Now, there may be some hidden other problem causing the gear to push against resistance and hence, cracking...
Last edited by hemi68charger; 09/04/13 05:41 PM.
TroyHouston Mopar Connection Club'69 Charger Daytona 440 - auto - 4.10 Dana (now with 426 hemi) '69 Charger 500 440 - 4speed - 3.54 Dana '70 Road Runner 383 - 4speed - a/c (now with 440)
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Re: Help, My AM thumbwheel radio won't tune
[Re: Cab_Burge]
#1496128
09/04/13 09:50 PM
09/04/13 09:50 PM
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Joined: Aug 2004
Posts: 4,247
Alabama
BigMoneyLewis
master
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master
Joined: Aug 2004
Posts: 4,247
Alabama
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This is a common problem with the thumbwheel radios . The plastic gear splits on the tuning wheel , allowing it to slip. I have dealt with this problem at least a thousand times, and I'm not joking . Let me know if you need help with it . http://wardsclassiccarradiorepair.com/Greg
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Re: Help, My AM thumbwheel radio won't tune
[Re: Jim_Lusk]
#1496129
09/05/13 11:09 AM
09/05/13 11:09 AM
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Joined: Jan 2003
Posts: 2,252
New York
rarefish
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 2,252
New York
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Quote:
Quote:
I just took another look with the face plate off and I can see a small white plastic gear that is in the middle of the tuning thumb-wheel. It's that gear that is slipping when I turn the tuner wheel. I'm not sure if it slipping due to some down stream binding or if it has just come loose on the thumb-wheel.
Trust me, it's the clutch. Take the top off the radio and you will see it...
I do see the clutch when I take the top off the radio. The question I have is. Is there an adjustment that needs to be made to the linkage or clutch. Can this problem be fix normally without replacing parts?
I know that I could send the radio in for repair, but that is not going to happen due to being short on cash at this time.
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Re: Help, My AM thumbwheel radio won't tune
[Re: BigMoneyLewis]
#1496132
09/05/13 12:24 PM
09/05/13 12:24 PM
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Joined: Jan 2003
Posts: 75,005
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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Quote:
However, your problem is going to be a broken plastic gear found behind the tuner thumbwheel.
They ALL break.
Greg
Listen to this , this is 99.99999999999999999999999999999999999% the problem, if you can turn the thumbwheel and do not see the plastic gear turn with the thumbwheel no amount of adjusting/cleaning of the clutch is going to fix it.
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Re: Help, My AM thumbwheel radio won't tune
[Re: JohnRR]
#1496133
09/05/13 05:38 PM
09/05/13 05:38 PM
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Joined: Jan 2003
Posts: 2,252
New York
rarefish
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 2,252
New York
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Quote:
Quote:
However, your problem is going to be a broken plastic gear found behind the tuner thumbwheel.
They ALL break.
Greg
Listen to this , this is 99.99999999999999999999999999999999999% the problem, if you can turn the thumbwheel and do not see the plastic gear turn with the thumbwheel no amount of adjusting/cleaning of the clutch is going to fix it.
Well, that is my problem. The plastic gear that is located in the middle of the thumbwheel is not turning when I rotate the thumbwheel. What locks the plastic gear to the thumbwheel? Is it non repairable once it starts to slip there?
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Re: Help, My AM thumbwheel radio won't tune
[Re: rarefish]
#1496134
09/05/13 07:11 PM
09/05/13 07:11 PM
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Joined: Jan 2003
Posts: 75,005
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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Quote:
Quote:
Quote:
However, your problem is going to be a broken plastic gear found behind the tuner thumbwheel.
They ALL break.
Greg
Listen to this , this is 99.99999999999999999999999999999999999% the problem, if you can turn the thumbwheel and do not see the plastic gear turn with the thumbwheel no amount of adjusting/cleaning of the clutch is going to fix it.
Well, that is my problem. The plastic gear that is located in the middle of the thumbwheel is not turning when I rotate the thumbwheel. What locks the plastic gear to the thumbwheel? Is it non repairable once it starts to slip there?
The press fit of the 2 parts, the gear is BROKEN ... Repair involves replacing the thumbwheel , contact Greg ward .
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