ar0140i9202b

Measure cylinder bores

Tipo ar · tema 01.40 · versione 0109 · 2008-10-28

Valido per: ENGINE 904.941 in MODEL 684.482

Non disponibile in “it”; mostrato in Inglese.

Collocazione

Gruppo funzionale 1 Motore › 01 Motore completo, sfiato del motore, testata, basamento › 01.40 Basamento, copricatena di distribuzione, coperchio terminale — Serie 684 (modelli 482) · Serie 904 (modelli 941)

EinPAS 15 Motore › 15.15 Motore a combustione interna completo/basamento motore/manovellismo › 15.15.31 Basamento/separatore di olio/sfiato — Serie 684 (modelli 482) · Serie 904 (modelli 941)

AR01.40-I-9202B

Measure cylinder bores

14.10.08

ENGINE 904.941 in MODEL 684.482

Measure cylinder bores

I01.40-0004-06

1 Cylinder crankcase

2 Dial indicator

3 Quick calipers for internal measurements

A Direction of measurement (transverse to the direction of travel)

B Direction of measurement (in the direction of travel)

X Upper measuring point (at upper reversal point of first piston ring)

Y Lower measuring point (in middle of cylinder wall)

Remove/install

1

Remove cylinder head

AR01.30-I-5800B

2

Attach turning device for engine

AR03.30-W-1600-03A

*BA01.60-N-1002-01A

*BA01.60-N-1003-01A

*904589046300

3

Place piston in cylinder with the cylinder bore to be measured at bottom dead center

Rotate crankshaft with cranking device.

*904589046300

4

Clean cylinder wall.

Cover piston crown.

Checking

5

Perform visual inspection to assess the cylinder barrel

Notes for evaluation of a cylinder barrel

AH01.40-N-0001-03A

Possible install a new cylinder liner even when none was previously installed:

Remove cylinder liner if necessary.

AR01.40-I-9272B

Install new cylinder liner.

AR01.40-I-9273B

Measure

6

Adjust dial indicator (2) and quick calipers for inner measurements (3) with outside micrometer to the value of the inside diameter of the cylinder barrel and set scale on dial indicator (2) to "0"

Preload: 5 mm

Observe code letter on

cylinder crankcase (1).

*BE01.40-N-1001-02B

Markings on cylinder crankcase

AH01.40-N-0001-02A

*001589532100

Quick calipers for internal measurements

Outside micrometer

7

Measure cylinder barrel at upper measuring point (X) and lower measuring point (Y), respectively in both directions of measurement

*BE01.40-N-1001-02B

*BE01.40-N-1002-02B

*BE01.40-N-1003-02B

*001589532100

Quick calipers for internal measurements

If specified values are not achieved:

Remove cylinder liner if necessary.

AR01.40-I-9272B

Install new cylinder liner.

AR01.40-I-9273B

8

Perform checking and measurement on all cylinders

9

Install in the reverse order

Check values for crankcase

Number

Designation

Engine
904.9,

Engine
906.9
without code MS8

BE01.40-N-1001-02B

Cylinder internal bore dia.

Code letter A

mm

101.985...101.991

Code letter B

mm

101.992...102.008

Code letter C

mm

102.009...102.015

BE01.40-N-1002-02B

Deviation of cylinder bore from the cylindrical form

mm

0.012

BE01.40-N-1003-02B

Wear on cylinder bore at top reversal point of first piston ring

measured in the driving or transverse direction

mm

0.1

Timing case

Number

Designation

Engine
900.9, 902.9, 904.9, 906.9

BA01.60-N-1002-01A

Inspection hole closure cover to timing case

Nm

25

BA01.60-N-1003-01A

Bolt, turning device to timing case

Nm

25

Measure cylinder bores
Measure cylinder bores

904 589 04 63 00

Cranking device

Dial indicator

001 589 53 21 00

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