First off, it's a belt not a chain unless it's a "vanos unit". If you are mechanically inclined and have sufficent tools - it's an involved process & I'd advise getting the Bentley Service manual for the step by step procedures. If you're not sure of your abilities or tools required I'd have it done by a dealer or qualified shop. Hopefully it's not already gone bad - if so you're going to need more than a belt. (The valve tolerances are very tight and if your belt has broken, it's 98% likely it's also done some valve damage) Sorry to be the messenger My 91 525 is an M50B25 non vanos engine and it has a timing chain. Your engine is a chain too. If it is broken and it happened while the engine was running there is a 100% chance that valve damage was done. These engines are interferance type and i cant think of any point the cam could be at where a piston would not hit a valve.
If your timing belt has cracks in it both inside and out, replace it!
i dont think they have a timing belt they have a timing chain its like this on a 525 1998 so not sure tho
my 750 has a 525 122 chain
I had the same problem on a 1994 525i. Replace the radiator.
chain: 525 , sprockets: 16/43
If you found the answer can you let me know. I have 1990 525 passager side low beam needs replaceing.
For savage 650 or 400 you should use chain 525. It strong enough to make your bike run well.
It is a 525 x 120L O-ring chain The number 120 stands for the number of links on it (length)
You need to get it re-gassed, at the garage
$525 is about average (without parts)
15% of 525= 15% * 525= 0.15 * 525= 78.75
Unbolt the old one and bolt on the new one. RRT, Hurricane,Utah