anybody got a spare speedo pinion? (was: what's up with my speedo dr
Posted: Wed Sep 26, 2012 12:46 pm
It looks like Shane came the closest. (He must have posted to me only, because I don't see his post on the list.) He suggested the gears were jamming on broken off parts, of something, I forget what. I finally got a chance to take a closer look. I did not find any broken parts. My receiver (the tabbed drive washer) was in pretty good shape, still flat, the outer ears a bit worn, the inner ears a little gouged by the pinion gear (presumably from one or more, but not too many, mis-assemblies).
The problem appears to be with the helical pinion gear itself. Many of the teeth are worn and mashed over into the grooves. Only about three teeth are still intact. The worm gear appears to be in good condition. I can see where the pinion might have jammed on the worm gear, which would have caused the housing to rotate violently.
When I put it back together the last time, the pinion was apparently slipping on the worm gear. At first, the needle twitched, and the speedo would only read up to 50mph or so, no matter how fast I was going. After a couple of gdays, the needle would only read up to 40. Today it was only going up to 10 mph.
The wheel hub still appears to be undamaged. I think what I need is a drive pinion. Does anybody have one in good condition they would like to sell? I have not yet looked to see if this part is available separately from a parts supplier. A fresh tabbed washer would be nice too, but not essential.
--- In DSN_KLR650@yahoogroups.com, Bogdan Swider wrote: > > More details are coming back to me about the time I had pretty much I think the same problem as Judman. It's been a number of years. > There's a part in the drive assembly called a receiver- 4164-1051; it's a soft metal ring/plate with 2 lugs projecting from it. These lugs fit into corresponding openings in the meter screw gear - 41060 1101. When I reinstalled my wheel these two parts were not aligned exactly right but they were close. The soft metal receiver bent because of the misalignment. This bent plate gripped the screw gear and held the parts together for a good while. Eventually the 2 parts slipped apart and I thus lost my speedo. Upon inspection > I noticed the malformed ring and I hammered it flat. I put everything together this time more carefully and all was well. > > Bogdan > > From: Jud > > Date: Wednesday, September 19, 2012 10:29 AM > To: "DSN_KLR650@yahoogroups.comDSN_KLR650@yahoogroups.com>" DSN_KLR650@yahoogroups.comDSN_KLR650@yahoogroups.com>> > Subject: [DSN_KLR650] What's up with my speedo drive? > > > > Last fall, my KLR got knocked over in the parking lot at work. Damage was minor, and was well compensated by the car driver's insurer. > > A few days after the incident, my speedo quit working. On inspection, I found the speedo drive pointing straight down, instead of to the rear where it should be. The cable sheath had ripped out of the threaded ferrule, which was still snugly in place. The drive was still held tight by the axle, and could not be moved by hand. I had to loosen the axle nut and partially withdraw the axle before I could rotate the drive housing back to its correct position. This led me to wonder how the drive housing had rotated either 90 or 270 to its new position. The housing is normally held tight by the axle. In addition, there are a couple of cast lugs on the fork leg which capture a corresponding lug on the drive housing. One of the lugs on the fork leg had a chip out of it, but they still seemed to keep the housing from rotating, although not very securely; it is the pressure of the axle that really keeps everything from moving. > > The cable inner was nowhere to be found, An inspection of the drive and hub revealed nothing apparently out of order. Replacing the cable and returning the drive unit to its correct position had the speedometer working perfectly again. It continued to work fine all this spring and summer, including a trip to South Dakota where the bike saw some fairly rough roads and biffed once. > > Last week it happened again. I first noticed the speedo was not working when I started my 6-mile ride to work. When I arrived, the cable had again ripped out of the ferrule. The inner was trailing on the pavement with about 8 inches still left in the sheath. Once again, the housing was pointing straight down, and was still held tightly so that I could not move it by hand until I slacked off the axle bolt. > > I will probab;y have to renew the cable once again, as the salvaged cable inner is slightly kinked. Although the speedo and odo both work, the needle twitches, and rarely reads over 50 mph no matter how fast I am going. > > This is baffling to me. Something is causing the speedo drive to rotate and rip out the cable. I assume it is rotating forward, but I am not even sure of that. Hs anyone encountered this? Any ideas? > > > > > > [Non-text portions of this message have been removed] >