AR03.20-P-4360-01TK Assign Crankshaft Bearing Shells

Assign crankshaft bearing shells

























ED Crankshaft bearing cap

1 Clean bearing points in crankcase, main bearing cap and main bearing journal of crankshaft with a chamois leather.

After a bearing damage, it may be necessary to remove any swarf from the crankshaft and crankcase oil galleries as well as the crankcase! Do not use any hard objects for cleaning. Blow through oil galleries in direction of flow oil with compressed air.





The top crankshaft bearing shells to the crankcase are assigned by means of color codings (on the reverse side of the crankshaft bearing shells) and center punch marks, which are stamped in at the crankcase (see arrows).

Only assigned color and center punch mark combinations (see table) may be fitted together.





The bottom crankshaft bearing shells are assigned to the basic journal of the crankshaft by means of letters (initial letter of the particular color).

The initial letters of the particular colors are engraved on the journal of the crankshaft (arrow).

The color coding of the bottom crankshaft bearing shells is indicated on the reverse side of the crankshaft bearing shells.

When installing the crankshaft bearing shells, it is important to keep to the order of the colors which is engraved on the journal of the crankshaft.





Example:
Arrow identifies direction of travel.
^ First letter "B" : A crankshaft bearing shell with the color codingblUe must be inserted in the crankshaft bearing cap (1).
^ Second fetter "G" : A crankshaft bearing shell with the color coding yellow must be inserted in the crankshaft bearing cap (2).
^ Third letter"G" : A crankshaft bearing shell with the color codinyellOW must be inserted in the crankshaft bearing cap (3).
^ Fourth letter "R" : A crankshaft bearing shell with the color codinged must be inserted in the crankshaft bearing cap (4).





2 Insert top crankshaft bearing shells (1 ) with the oil holes (2) and the oil grooves (3) into the crankcase. m Ensure that the anti-twist locks (4) of the crankshaft bearing shells (1 ) are seated in the recess clearances of the crankcase.

3 Insert bottom crankshaft bearing shells (7) into the crankshaft bearing caps (6). m Ensure that the anti-twist locks (5) of the bottom crankshaft bearing shells (7) are seated in the recess clearances of the crankcase (6).





The thrust plates are assigned to the fitted bearing by means of the numbers 1 or O (see table). These are engraved on the journal of the crankshaft (arrow). m The thrust washers installed must have the same designation.





4 Insert crankshaft (7).

5 Install top thrust washers (8).

The oil grooves of the thrust washers (8) must point towards the crankshaft webs (1 O).





6 Install the crankshaft bearing caps (2) according to the marking. When installing the fit bearing cap (3) hold both thrust plates (8) tight.

The anti-twist locks (11 ) of the thrust plates (8) must be seated in the grooves (12) of the fitted bearing cap (3).

The oil grooves (9) of the thrust plates (8) must point toward the crank webs (10).