keithb7 Posted March 12, 2023 Report Share Posted March 12, 2023 (edited) That was interesting puzzle to access the speedometer. Its howling. No improvement after lubricating the cable. It does not utilize a wick or lubricating port. I may just try and spray lubricant into the guts of this speedo. It looks way too delicate for my ape hands to disassemble . I’ll surely break it. I may send it out for disassembly, cleaning and lubrication. Any have a similar experience? How did you solve it? Edited March 13, 2023 by keithb7 Quote Link to comment Share on other sites More sharing options...
keithb7 Posted March 13, 2023 Author Report Share Posted March 13, 2023 Thinking, maybe get some light lubricant into these areas indicated by the red arrows? Quote Link to comment Share on other sites More sharing options...
keithb7 Posted March 13, 2023 Author Report Share Posted March 13, 2023 Upon closer inspection this might be a lube hole. I have no experience with these. Suggestions of a lubricant? Thx. Quote Link to comment Share on other sites More sharing options...
D35 Torpedo Posted March 13, 2023 Report Share Posted March 13, 2023 It's almost definitely your cable making the noise. There isn't much in the speedo that can do that. But, since you have it out put a drop of oil on the shaft bushing. You can also lube the odometer gears. Flooding it is not going to help. Test it with a drill before you reinstall it to verify that it's working smoothly. Quote Link to comment Share on other sites More sharing options...
D35 Torpedo Posted March 13, 2023 Report Share Posted March 13, 2023 Three in one oil Quote Link to comment Share on other sites More sharing options...
keithb7 Posted March 13, 2023 Author Report Share Posted March 13, 2023 (edited) I pulled speedo cable out 2x. Pulled out inner drive cable. Cleaned and lubed it. No improvement. I’ll try some 3 in 1 oil on the speedo parts. Thx. Edited March 13, 2023 by keithb7 Quote Link to comment Share on other sites More sharing options...
D35 Torpedo Posted March 13, 2023 Report Share Posted March 13, 2023 I could be wrong. Try to run up the speedo on the bench. That way you eliminate the cable all together. Quote Link to comment Share on other sites More sharing options...
keithb7 Posted March 13, 2023 Author Report Share Posted March 13, 2023 Thought I’d follow up. I oiled up areas of the speedo mechanism that I could reach. I used 3in1 oil. I removed the glass. Cleaned it up inside. Painted the tip of the needle red again. I spun it up on the drill. Seemed good. I pulled the cable, lubed it up again. Reassembled all and lifted the rear wheels. I took it up to 40 mph in top gear. No noise. It looks better. All seems good. Off we go, cruising again soon. 3 Quote Link to comment Share on other sites More sharing options...
Saskwatch Posted March 13, 2023 Report Share Posted March 13, 2023 Excellent ? When you pulled the cable out ,did you use 3in1 oil on it also ? Thank you , Quote Link to comment Share on other sites More sharing options...
keithb7 Posted March 13, 2023 Author Report Share Posted March 13, 2023 (edited) No I used an aerosol spray lube on the cable. Pulled inner drive cable right out. Sprayed adequate lube down cable hole. Also sprayed some on the cable itself when I fed it back down the hole. Edited March 14, 2023 by keithb7 1 1 Quote Link to comment Share on other sites More sharing options...
keithb7 Posted March 14, 2023 Author Report Share Posted March 14, 2023 After a road test…Smooth! The needle is working better than ever. No jumping around anymore between 5-20 mph. Steady-eddy now. Happy with the results. 2 1 Quote Link to comment Share on other sites More sharing options...
lemondana Posted March 14, 2023 Report Share Posted March 14, 2023 For anyone with gauge problems on the 38 Plymouth, A tidbit of information-the Roadking and the Deluxe used different part number gauges. On the Deluxe, the speedo and gauge pod mount with 3 ears and the Roadking with 2 ears. The individual gauges all have different part numbers. Quote Link to comment Share on other sites More sharing options...
Saskwatch Posted March 14, 2023 Report Share Posted March 14, 2023 Thank you for this timely post Keithb7. I have some of the JohnDeere corn head grease leftover from packing in the steering box. Question - Do you think After removing & cleaning the cable and housing , I could use some of that grease to successfully lube the speedometer cable unit ? Thank you ? Quote Link to comment Share on other sites More sharing options...
Happy 46R Posted March 14, 2023 Report Share Posted March 14, 2023 I had some bounce problems with the needle on my speedo and at the time read on the forum about lubricating the cable. I used the white Lithium grease on mine just over 2 1/2 years ago now and it has worked great. Not saying it is the right thing just what was mentioned at the time. Good job Keith, small parts scare my big hands also. Dave 1 Quote Link to comment Share on other sites More sharing options...
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