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Fiat 126 Chat => Fiat 126 Mechanical Problem Solving => Topic started by: Guldbergdk on January 17, 2020, 10:34:56 AM

Title: BIS crankshaft end float asjustment
Post by: Guldbergdk on January 17, 2020, 10:34:56 AM

I pulled my BIS engine apart, glassblasted it and serviced all parts.

Crankshaft bearings were shot, so I exhanged those.

I did however forget to look at the crankshaft float before I disassembled it. How are the crankshaft hold in place? Right now there are some 2mm float :-) From the exploded view and the workshop manuals I cannot figure out how its fixed. Is it suppose to ride against the flywheel end or the timing chain end?

Title: Re: BIS crankshaft end float asjustment
Post by: Pete126 on January 17, 2020, 03:10:34 PM

It sounds like you may have put the thrust washer in the front bearing the wrong way round as circled, the hole in the centre has a chamfer, which mates with the chamfer on the crank if its the wrong way round it will give you 2/3 mm float

Title: Re: BIS crankshaft end float asjustment
Post by: Guldbergdk on January 21, 2020, 08:34:23 AM

Thx.

I hadn't mounted the washer yet. I forgot was I was looking for and misplaced in a box. Once I found it, it was pretty obvious:)

Title: Re: BIS crankshaft end float asjustment
Post by: Pete126 on January 21, 2020, 08:17:58 PM

That's good news, I did it myself many years ago and spent a week scratching my head :headscratch: 🙂