ar0320s429103a

Determine crankshaft bearing axial play

Type ar · emne 03.20 · version 0111 · 2006-07-26

Gælder for: ENGINE 111.948 /978 in MODEL 638 ENGINE 111.979 in MODEL 901, 902, 903, 904

Ikke tilgængelig på “da”; vises på Engelsk.

Placering

Funktionsgruppe 1 Motor › 03 Drivværk › 03.20 Krumtapaksel — Serie 638 · Serie 901 · Serie 902 · Serie 903 · Serie 904

EinPAS 15 Motor › 15.15 forbrændingsmotor komplet/motorblok/krumtapdrev › 15.15.41 Krumtapaksel/svinghjul/medbringerskive — Serie 638 · Serie 901 · Serie 902 · Serie 903 · Serie 904

Gælder også for motorer/gearkasser: 111 948, 111 978, 111 979

AR03.20-S-4291-03A

Determine crankshaft bearing axial play

Test values for crankshaft

Number

Designation

Series 111.948/ 978 engine

Engine 111.979

BE03.20-N-1003-02A

Main bearing journals

Width

mm

23,958-24,042

23,958-24,042

BE03.20-N-1005-02A

Main bearing journals

Width at fit bearing

mm

24,500-24,533

24,500-24,533

Repair sizes

mm

24,700-24,733

24,700-24,733

or

mm

24,900-24,933

24,900-24,933

or

mm

25,000-25,033

25,000-25,033

BE03.20-N-1006-02A

Thrust washers at main bearing journals

Thickness at fit bearing

mm

2,15-2,20

2,15-2,20

or

mm

2,25

2,25

or

mm

2,35

2,35

or

mm

2,40

2,40

BE03.20-N-1007-02A

Main bearing play

radial

mm

0,030-0,050

0,030-0,050

axial

mm

0,300

0,300

Crankshaft

Number

Designation

Engine 111.948/
978/979

BA03.20-N-1001-01A

Bolts of crankshaft bearing caps

1st stage

Nm

55

2nd stage

°

90

Determine crankshaft bearing axial play
Determine crankshaft bearing axial play
Determine crankshaft bearing axial play

366 589 00 21 05

001 589 32 21 00

363 589 02 21 00

Extension

Dial gage holder

Dial gage

Commercially available tools

Number

Designation

WH58.30-Z-1001-12A

Quick calipers for internal measurements

WH58.30-Z-1002-12A

Micrometer

Determine crankshaft bearing axial play

S03.20-3014-01

1 Measure width of crankshaft fit bearing journal and assign matching thrust washers.


Thrust washers of the same thickness must be installed on both sides of the crankshaft fit bearings.

Determine crankshaft bearing axial play

S03.20-3015-01

2 Oil top thrust washers and insert into the crankcase.


The two oil grooves (arrows) in the thrust washers must point toward the crankshaft webs.

Determine crankshaft bearing axial play

S03.20-3016-01

3 Oil bottom thrust washers and insert into the grooves at crankshaft fit bearing cap.


The two oil grooves (arrows) in the thrust washers must point toward the crankshaft webs.

Determine crankshaft bearing axial play

S03.20-3017-01

4 Oil crankshaft and insert.

5 Fit on crankshaft bearing caps according to marking.


6 Oil bolts of crankshaft bearing caps and tighten fully to specified torque.

Determine crankshaft bearing axial play

S03.20-3018-01

7 Measure crankshaft bearing axial play.


If the measurement obtained is not within the permissible tolerance, correct axial play of crankshaft bearings by replacing the thrust washers, aim for the mean value of the specified axial play. Thrust washers of the same thickness must be installed on both sides of the crankshaft fit bearings.

8 Rotate crankshaft by hand and check unobstructed movement, re-mount crankshaft in bearings, if necessary.