Vehicles after change point in 1982
REPLACING CRANKSHAFT
MAIN BEARING SHELLS
- engine Disassembled -
There are two versions of bearing shells.
- Double classification: red/blue
- Triple classification: yellow/green/white
1 = Bearing shell 1-2-3-5-6-7
2 = Bearing shell 4 (thrust bearing)
Check ground size of main bearing journals.

Bearing shells are installed in the crankcase according to the crankcase
paint mark.
If paint mark has been washed off of the crankcase, install both bearing shells to the
crankshaft paint mark.
If bearing shells supplied with a replacement crankshaft do not conform with tolerances
(color code) of the crankcase, they must be exchanged in Parts.
Bearing shells are installed in the bearing caps according to the crankshaft paint mark.

Place Type GP-1 Plastigage on crankshaft wiped clean of oil and tighten
bearing cap bolts with correct tightening torque*.
Don't turn the crankshaft.
Source for Plastigage:
CARTOOL
Alfred-Brem-Str. 5
D-85053 Ingolstadt

Unscrew and remove bearing caps.
Check bearing play* be measuring width of flattened Plastigage with help of the
supplied scale.
Correct bearing play by installing new bearing shells, bearing shells with different machined
size or with different color code.


* See Specifications