speedo problems
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Stage II
Joined: May 2012
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From: michigan
speedo problems
hi i need some help on my 1983 flh bike?? my speedo is jump around ..form 0-3mph. then it zip to 45=70 mph.. but I'm going 30 mph.(2 week a go the speedo 0 cable came off (i took the dash apart. i put the cable on. but the wrong way. it pull tight..so i pull it thou ,so it would not be so tight {i oil it when i had the dash off}) ) it is a 83flh no tach..(i got the bike 5 year ago. From my brother...it has 9,000 miles on it ) ??? thank you all,,,
mark
mark
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Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
Two possibilities come to mind. One is the speedo head may be on the way out, but first check the speedo cable (it doesn't have a sensor). Hopefully your brother passed on a service manual!
Disconnect the cable at both ends and gently pull out the wire inner. It will probably come out at the speedo end. Check its condition, which should be clean steel, with a little lubricant.
More likely the poor thing will be very rusty and may even not come out easily. If so throw the entire cable away and get a new replacement. Before you fit it, remove the inner and lightly grease the lower half (not the speedo end). Don't grease the upper half as there is a risk the grease will work its way inside the speedo and make a real mess!
Hope that helps.
Disconnect the cable at both ends and gently pull out the wire inner. It will probably come out at the speedo end. Check its condition, which should be clean steel, with a little lubricant.
More likely the poor thing will be very rusty and may even not come out easily. If so throw the entire cable away and get a new replacement. Before you fit it, remove the inner and lightly grease the lower half (not the speedo end). Don't grease the upper half as there is a risk the grease will work its way inside the speedo and make a real mess!
Hope that helps.
I've never worked out how to only grease the lower half without getting grease on the upper half.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,895
From: Bedford UK
By contrast, if the entire length is greased, inserting the wire will accumulate a lot of grease at the upper/speedo end, which is most undesirable. Once grease gets inside, such is the mess it can make the speedo head is virtually unrecoverable!
Good point! The grease should be lightly applied to the wire, before threading it into the outer. Admittedly some may be rubbed off while inserting it, but the majority will stay on the wire as it works its way through.
By contrast, if the entire length is greased, inserting the wire will accumulate a lot of grease at the upper/speedo end, which is most undesirable. Once grease gets inside, such is the mess it can make the speedo head is virtually unrecoverable!
By contrast, if the entire length is greased, inserting the wire will accumulate a lot of grease at the upper/speedo end, which is most undesirable. Once grease gets inside, such is the mess it can make the speedo head is virtually unrecoverable!
Perhaps whats needed is a chain lube aerosol with a straw about 18"long
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