Are you 1000 percent sure it's the correct speedometer for your model year SL? I had similar variations in speed for a 1985 300 D with a non-correct replacement speedometer.
On 4/2/12, Michael Canfield <slozuk...@gmail.com> wrote: > Don't ya just love things you can fix yourself? Nice job. Jim will be > proud....... > > Mike > On Apr 2, 2012 12:53 PM, "clay monroe" <redgh...@comcast.net> wrote: > >> SL has a wonky speedo. It registers about 10mph or 9% low. I am not sure >> what is up with it, since I have yet to remove it from the cluster. The >> odo works just fine. Tach is spazzed out and will need acute attention. >> >> The tach pegs when you start the car and just stays there. Used to flop >> about before. Slow to show the increase in revs and then flop around, >> wiggling between 1k marks. Never settled down, then just decided to go >> full goose bozo. I have three spares I can swap in, but if consensus is >> that the sender is probably cause, may hit that first. >> >> Either way, I will be pulling the cluster and looking at the speedo. What >> should I lube the cable with? Light mineral oil or graphite? I do not >> recall what Marshall advised. >> >> I did yank the offending washer pump. Looked around online for >> replacement. Yeah, that ain't gonna happen. Design change to spaded top >> instead of round connectors and reversed polarity. There is another model >> that does not bolt to the frame and live under the radiator overflow tank, >> but it needs to be strapped to the washer bottle and does have the proper >> power connector. Proper use one is more than $80, the other is black and >> around $30, and I have to rejigger the mounting. >> >> Put 12v to the pump and it hums, so motor is good. No spinny though. >> Figured I was not going to lose cash by taking it apart. (this is the >> same pump as used in w116) Doused the wee screws and bolts with kroil and >> let it sit for an hour. Then delicately unscrewed and held tight to nuts >> (both) and got the thing apart. Pretty simple thing. Motor, spins plastic >> wheel attached to brass post and toothed gear. Gear spins another gear >> (stabilizer) and somehow water is sucked in one side and out the other to >> the windscreen. >> >> At least that is what is supposed to happen. The thing was seized with >> tartar deposits. Soak it vinegar and hope that softened it some. Get ice >> pick and make small whacks at rear of gear posts to remove them, then soak >> and look for dental tools. Grab wet sanding block 220 and go to town on >> the brass sealing facia, then do hygienist impression on the gears and >> body. Get it all nice and bright/smooth and used some light machine oil >> to >> seat all the moving parts and put her back together. I have a washer pump >> now. >> >> >> >> >> clay >> >> >> 1974 450sl - Frosch - Two tone green >> 1972 220D - Gump - She is green, simple and ran >> 1995 E300D - Cleo - Used by the Queen of Denial >> POS 1987 SDL - Beware Nigerian Scammers >> >> >> >> >> >> >> >> _______________________________________ >> http://www.okiebenz.com >> For new and used parts go to www.okiebenz.com >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
