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  #16  
Old 10 Jul 2005
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excellent idea gsworkshop :-)
to put a post about gearbox problems and solutions ...
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  #17  
Old 13 Jul 2005
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RE Gearbox

Simply changing the bearings (and while you're at it make sure you have the circlip, or get a machinist to machine it on the shaft for you) at around 60,000 miles / 100,000 km AND as noted making sure it's getting clean uncontaminated oil is normally sufficient.

In other words:

1. Make sure the speedo cable rubber boot is in good condition - this is where most of the water gets in - running down the speedo cable and past a perished boot.

2. Change the oil at factory intervals with factory recommended oil. Nothing else helps enough to matter imho.

3. REBUILD the gearbox at stated mileage above - all that's needed is to replace all the ball bearings - the roller bearing will esaily go double that mileage, and is very expensive.

4. IF you have one of the gearboxes that doesn't have the circlip on the frontend of the output shaft, replace the shaft or get a machinist to machine a groove for the circlip into it.

5. Grease the input shaft spline at 20-30,000 mile /35-40,000 km intervals with the latest BMW recommended grease. NO need to pull the gearbox out, just pull it back a couple inches / 5cm, clean the splines on the shaft with a toothbrush wetted with a little gas or solvent, and then SPARINGLY coat the splines with grease - excess ends up on the clutch and ruins it.

That's really all that they need!

hope that helps...

Grant



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  #18  
Old 4 Aug 2005
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Block changes is only necessary if you have an older model with steel cylinders, app.1980 and older.
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