bakeLit
XS400 Enthusiast
Hello XS world,
I've recently opened up an engine that had metal shavings in oil, so I thought the crankshaft journals were shot, which proved to be right, what a mess it was inside.
Anyway, I am now in the process of replacing the crankshaft with a different one together with responding shell bearings. The thing is I find the chapter about identifying the correct bearings in the manual quite confusing.
So the basic idea is that I take the numbers located on the upper crankcase and the numbers on the crankshaft itself.
From left to right, this is what I get:
CRANKCASE: 3 4 4 (I've already switched the order from 4 4 3 because the upper case needs to be flipped over so that the numbers correspond to the correct journals.)
CRANKSHAFT: 2 1 1
Now the manual goes on to say that CRANKCASE NUMBER minus CRANKSHAFT NUMBER equals BEARING COLOUR, but then there's this chart - and that's when things get confusing.
Since when does 3 - 1 equal 1? Yes, 4 - 2 does equal. But... am I misunderstanding something here? Misreading the meaning of the chart, perhaps?
According to my readings, the bearings inserts should be as following:
FROM LEFT TO RIGHT:
3 - 2 = 1 (Blue)
4 - 1 = 3 (Brown)
4 - 1 = 3 (Brown)
What I found in the engine, however, was Black, Brown, Brown, so instead of the (supposedly) Blue bearing, there's a black one. Could this have been the cause of the failure?
Other question - I do have a spare healthy engine that I'm willing to sacrifice for this one (I'm thinking of just putting the healthy crankshaft with bearings into the old one that broke down) but I suppose the numbers would have to lead to successful calculations for me to be able to do this swap?
Thank you very much!
I've recently opened up an engine that had metal shavings in oil, so I thought the crankshaft journals were shot, which proved to be right, what a mess it was inside.
Anyway, I am now in the process of replacing the crankshaft with a different one together with responding shell bearings. The thing is I find the chapter about identifying the correct bearings in the manual quite confusing.
So the basic idea is that I take the numbers located on the upper crankcase and the numbers on the crankshaft itself.

From left to right, this is what I get:
CRANKCASE: 3 4 4 (I've already switched the order from 4 4 3 because the upper case needs to be flipped over so that the numbers correspond to the correct journals.)
CRANKSHAFT: 2 1 1
Now the manual goes on to say that CRANKCASE NUMBER minus CRANKSHAFT NUMBER equals BEARING COLOUR, but then there's this chart - and that's when things get confusing.

Since when does 3 - 1 equal 1? Yes, 4 - 2 does equal. But... am I misunderstanding something here? Misreading the meaning of the chart, perhaps?
According to my readings, the bearings inserts should be as following:
FROM LEFT TO RIGHT:
3 - 2 = 1 (Blue)
4 - 1 = 3 (Brown)
4 - 1 = 3 (Brown)
What I found in the engine, however, was Black, Brown, Brown, so instead of the (supposedly) Blue bearing, there's a black one. Could this have been the cause of the failure?
Other question - I do have a spare healthy engine that I'm willing to sacrifice for this one (I'm thinking of just putting the healthy crankshaft with bearings into the old one that broke down) but I suppose the numbers would have to lead to successful calculations for me to be able to do this swap?
Thank you very much!