Forum bmwbike.com

Yes, use ordinary, good quality flat washers, but ensure the fit snuggly under the posts so as not to foul the rocker cover. Before tightening the cylinder head bolts, offer the rocker assembly up to ensure the spring/ rocker arm gap is sufficient. As I say, I had to fit two washers under each post ...

Hi Janardhana, I am impressed with the work you have done already and take my hat off to you for your perseverance. I hope you have taken careful note of where the rear bearing shims were located. When replacing the rear cover, ensure the small oil deflector plate on the rear of the mainshaft does n...

Two things spring to mind. Check the vertical play of the rockers. It should be minimal with the rockers free to rotate. The shafts are a press fit into their mounting blocks therefore can be adjusted with care. A not uncommon problem is a valve spring fouling the inside of a rocker arm. Increase th...

Dear Janardhana, I salute you for managing to carry out so much successful work so far.BMWs seldom need to be taken apart, but when they do need repair they can present seemingly insurmountable difficulties. I can therefore see you might wellhave to make your own special tools, in which case please ...

Hi Rognjac, You may like to know I am working on a R69S fitted with an MBz unit. The bike runs well but is not as smooth at idle as one might like. Checking with the strobe light, the advance/retard unit operates over only a small range, i.e. it advances to the "F" mark correctly, but at i...

Hello again Janardhana, It really is important you acquire a copy of the BMW Workshop Manual - contact Mark Huggett. The three maks you see are: "OT" indicates Top Dead Centre,beneath that "S" is to set the static timing (points just opening), and under that "F", fully ...

Firstly, Janradhana, ensure the fault really does lie in the gearbox. It may seem obvious, but test the bulb and bulb holder in the headlight and that all wiring and connectors are functioning correctly. If you are certain the gearbox switch requires attention, then yes, the rear cover will need to ...

Hi Jon, Well, I have never heard of that one before in all my 30-odd year of tinkering with BMWs! You see, it was sheered rivets after all. Don't take it too badly; I doubt if even the most experienced engineer would have guessed that was the problem. Don't evn try to repair it yourself, it's not wo...

Hi Jon, Firstly narrow down where the problem lies. If the gearbox is okay, as from how you describe things it most probably is, go on to the final drive. Is the drive shaft turning the bevel drive? The splined female coupling at the end of the shaft is held on the shaft by a taper and a nut that sh...

Dear Jon, I had exactly the same symptom on my R50 some years ago but thankfully only 100 yards from home. I discovered the clutch friction plate hub had sheered its rivets. The only solution was to replace it.I have also seen friction plates with loose rivets. If you think, all the engine torque is...