The New And Improved Unofficial R65 Forum V2
Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: montmil on March 07, 2010, 02:36:08 PM
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Both R65s have always marked their spots in the garage with annoying oil drips. After cleaning the lower transmission areas, both showed signs of leaking neutral indicator switches. The '83 got a new switch from Motobins; a less expensive repop unit. The '81 got a short, plain bolt and crush washer as the Vapor digital instrument has no neutral indicator. To keep the starter relay fully functional, I simply joined the two wires off the neutral switch and sealed them in shrink tubing. The '81 also received a new shifter shaft seal as my baby powder dusting showed a tattletale path.
Previously, both R65s had new O-rings fitted to their rear brake cam shafts. Four rings on the '83 but the '81 takes but two. This effort stopped the gear lube dripping off the bottom of the final drive case. After a serious internal cleansing, new brake shoes for the '81 but the '83 got a pair of boiled shoes with plenty of meat still on 'em.
With the bean can advance weights cleaned and their pivot posts lubed, and after employing all the voodoo skills I possess in a fruitless effort to get the engine revs to properly drop back at idle, I pulled the head-to-carb rubber sleeves for a more thorough visual inspection. Jeez Louise... The right side sleeve was deformed and deteriorated to the point that there was an air leak which was causing a lean condition on the right jug and inhibiting a proper idle return. Naturally, the bad spot was on the bottom and out of casual sight. Hucky's BMW had just delivered a pair of new sleeves which required minimal effort to install. A test ride of a few miles confirmed all is well.
And good springtime weather is just a couple weeks away.[smiley=clap.gif] Bengt says I need to quit working on the scoots and get out on the road. Good advice worth repeating.
Monte
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After my previous experience with Beezers and Trumpets I'm surprised i have no oil leakage issues except the master cylinder which consistently leaks abit whatever i do.My advice would be to kill a few chickens issue a few hexes and wait for better weather.
Lou
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You need more dirt on the garage floor.
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You havn't lived until you tried to care for and feed a BSA! :D
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You havn't lived until you tried to care for and feed a BSA! :D
Been there ......If I don't leak I don't have any and wiring by Lucas prince of darkness. (58 A-10) 2 clutches from lack of oil.
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I replaced the neutral switch when I had the transmission overhauled a few years ago, and it has started to leak !!!!
I even followed the recommendation of not tightening the switch with a wrench, just hand tight .
It has started to leak at the terminals !!!!!
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I have replaced my switch with a new one but I saved the old and covered the top with JBWeld leaving just terminal showing. When my new one starts to leak again, I'll put the old one back in.
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I believe the BMW OEM neutral switch has a plastic insert with the two spade terminals exiting the plastic area. The metal body of the switch seems to be crimped to the plastic. I tested the integrity of the original switch by dribbling light oil into the plunger opening. Both my OEM switches leaked at the plastic/metal junction.
MotoBins supplied an all-metal, made in Italy, repop switch for the '83. Less cost then the OEM "leakers" offered by BMW.
Monte
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Remind me before I spend $33 dollars again at my local dealer please. :o