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Joined: Sep 2010
Posts: 44
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2010
Posts: 44 |
Recently the speedometer in my 1937 Master Deluxe Coupe stopped working properly. It now reads 15 miles per hour slow. At rest, the needle used to stop at the zero mark, but it now falls below the zero mark. By the time I'm doing 15mph the needle reaches zero and consistently reads 15mph slow as I accelerate. (I had a friend follow me so I knew how fast I was doing.) Any ideas on what to check first to fix this? Thanks!
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Joined: Apr 2002
Posts: 598
Oil Can Mechanic
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Oil Can Mechanic
Joined: Apr 2002
Posts: 598 |
Is It possible that your needle has slipped? If so, you may need to reattach It in the proper spot on the shaft and then lube the cable and head.
Richard
I try to be the person my dog thought I was.
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Joined: Jul 2008
Posts: 714
Oil Can Mechanic
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Oil Can Mechanic
Joined: Jul 2008
Posts: 714 |
Richard, what would make the needle slip? just wondering..
Ken's 1940 Special Deluxe Sedan
1970 Cadillac Hearse
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Joined: Apr 2002
Posts: 598
Oil Can Mechanic
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Oil Can Mechanic
Joined: Apr 2002
Posts: 598 |
I could only guess, but it is possible that a lack of lubrication of the head or cable could cause It to jerk and loosen on the shaft. Since you will need to pull out the speedometer and the cable you will be able to tell If this Is the cause and be able to clean and lubricate the parts.
Richard
I try to be the person my dog thought I was.
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Joined: Sep 2010
Posts: 44
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2010
Posts: 44 |
Thanks for your suggestions. I pulled the cable and cleaned and lubricated it, but I don't know how to get the needle back to zero. Is there a pin or something that might have broken off at the zero mark? I don't recall seeing one but I'm stumped at this point. Any other ideas? Thanks!
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Joined: Jan 2006
Posts: 7,046 Likes: 107
Hall Monitor ChatMaster - 7,000
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Hall Monitor ChatMaster - 7,000
Joined: Jan 2006
Posts: 7,046 Likes: 107 |
I don't know about your speedo but the few I've had apart in the past had a rest for the pointer @ 0 MPH. I have no clue as to whether that was standard practice or not.
VCCA Member 43216
Save a life, adopt a senior shelter pet.
1938 HB Business Coupe
1953 210 Sedan
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Its very common to see the needle of a 1937 speedometer coming to rest below the "0" mark. Not sure if this has an affect on the speed reading. The needle can be pulled off with your fingers and pushed back in the correct place very easily.
Gene Schneider
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Joined: Sep 2010
Posts: 44
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2010
Posts: 44 |
Its very common to see the needle of a 1937 speedometer coming to rest below the "0" mark. Not sure if this has an affect on the speed reading. The needle can be pulled off with your fingers and pushed back in the correct place very easily. Seriously, it's that easy?  I'll be giving that a try tonight when I get home. Thanks!!!
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