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Speedo failure
Posted: Mon Mar 03, 2008 2:16 am
by silver
Somewhere around 2000 miles ago my speedo stopped functioning. I replaced the cable and no joy. I'm going to be checking out the drive gears but i was wondering, is this a common failure on the FZR/YZF bikes ? I had the drive gears on my FZR fail about 18 months ago and the resident parts man (Tim) had to send me one post haste. And these things (the speedo's) are purely mechanical, right ?
Re: Speedo failure
Posted: Mon Mar 03, 2008 5:09 am
by alexyzf
silver wrote:Somewhere around 2000 miles ago my speedo stopped functioning. I replaced the cable and no joy. I'm going to be checking out the drive gears but i was wondering, is this a common failure on the FZR/YZF bikes ? I had the drive gears on my FZR fail about 18 months ago and the resident parts man (Tim) had to send me one post haste. And these things (the speedo's) are purely mechanical, right ?
check the thingie(dont know the name) in youre frontwheel... they tend to wear or break and than it dousnt rotate the ring on your speedoring that is attached to youre wheel...
Posted: Mon Mar 03, 2008 9:17 am
by dragracer1951
Yup. Drive gear in front wheel. If the tangs are broken or worn off....it won't turn the cable. Teh easy way to see is take the cable off the back of the spedo. hang it where you can see it andride around the block
If the inner is turning you got other problems. If not it's the drive gear in the front wheel
Posted: Thu Mar 06, 2008 12:18 am
by djalbin
My speedo quit working (FZR1000) at approx 27K miles. Front wheel gear unit. $102.00 in new parts from Yamaha:
Gear Unit Assy = $84.07
Clutch = $5.75
Clutch Retainer = $4.45
Oil Seal = $8.55
The speedo is mechanical. The front wheel hub drive, the cable, and the speedometer. When mine quit working I disconnected the cable at the front wheel hub and spun the cable by hand. The speedometer gauge needle moved so I knew it was the front wheel gear assembly.
Posted: Fri Mar 07, 2008 11:47 am
by silver
RETAINER,CLUTCH $2.23
CLUTCH,METER $4.32
OIL SEAL $3.44
OIL SEAL,SDD-TYPE $6.86
GEAR UNIT ASY $74.66
Ya know, dese bikes have some annoyun failures. I can't remember the last car that had a failing speedo drive, cable or speed-o-meter. I think it was my 1969 Pontiac Custom S.
Posted: Fri Mar 07, 2008 9:54 pm
by KontoBoy
John,
If it's the drive unit I have one for you. Check the PN: 4FM-25190-00-00. New in wrapper, great price.
Kontoboy
Posted: Sat Mar 08, 2008 1:10 am
by silver
Gotcha Kontoboy . Thanks again !
Posted: Sun Mar 09, 2008 11:13 pm
by KontoBoy
In the mail tomorrow (Monday)
Kontoboy
Posted: Mon Mar 10, 2008 1:13 am
by silver
Cool. Some new tires, new chain, a new clutch and basket (Tim ?), the speedo thingy and I'll be all set. Then perhaps I'll take me one of them there racing classes to learn how to handle this thing !
Posted: Mon May 26, 2008 6:28 pm
by goingtoscotland
dragracer1951 wrote:Yup. Drive gear in front wheel. If the tangs are broken or worn off....it won't turn the cable. Teh easy way to see is take the cable off the back of the spedo. hang it where you can see it andride around the block
If the inner is turning you got other problems. If not it's the drive gear in the front wheel
i did something similar to trouble shoot my broken speedo. i took the cable off of the drive gear at the wheel, put the spindle in the cable in the chuck of a drill and pulled the trigger. if the speedo doesn't register the speed it's either the cable or speedo itself. if it does it's the drive gear. unfortunately mine was the drive gear as well.
Posted: Tue May 27, 2008 2:53 pm
by silver
It did turn out to be the "clutch meter" widget with a bent/worn tang. Oddly I could connect a cable to it and it would spin the cable while I was holding it pretty tight so I thought it to be "good enough" but it seems that the speedometer needs more torque.
Posted: Tue May 27, 2008 7:29 pm
by FZRDude
Sorry John, no extra speedo thingy in my parts bin.
Posted: Sun Jul 27, 2008 11:04 pm
by goingtoscotland
ok so i'm finally about to fix my speedo. need identification of the likely required part. number 5 the clutch meter or number 11 the drive gear itself.
http://webservices.motorsportdealers.co ... 0/0034.Gif
thanks guys
Posted: Mon Jul 28, 2008 12:54 am
by FZRDude
#11 unless #5 has a broken tab.
Posted: Wed Jul 30, 2008 12:29 pm
by goingtoscotland
so i pulled the front wheel off and #5 has a broken tab. which is more likely, that #11 would still function properly, or that the broken tab rattled around in there and did more damage.
Posted: Wed Jul 30, 2008 1:06 pm
by FZRDude
Well with #5 being only $4 and #11 being $66, I'd replace #5 and see if all's good. I mean you have to replace that for sure since is broke'd.
Me? I'd shoot some brake-keen in #11 to clean it up and then spray in some lithium grease to lube it and go from there (given that is already in fair order/moves freely).
4FM-25149-00-00 CLUTCH, METER $3.82
4FM-25190-00-00 GEAR UNIT ASSY $66.12
Posted: Wed Jul 30, 2008 4:13 pm
by haunter
silver wrote:
Ya know, dese bikes have some annoyun failures. I can't remember the last car that had a failing speedo drive, cable or speed-o-meter. I think it was my 1969 Pontiac Custom S.
on bikes they are a little more....exposed to the elements and bumps etc
Posted: Wed Jul 30, 2008 5:36 pm
by FZRDude
haunter wrote:silver wrote:
Ya know, dese bikes have some annoyun failures. I can't remember the last car that had a failing speedo drive, cable or speed-o-meter. I think it was my 1969 Pontiac Custom S.
on bikes they are a little more....exposed to the elements and bumps etc
The #5 is only knackered by the person putting the wheel back on.
