Remove/install crankshaft main bearings

AR03.20-W-4341H

Remove/install crankshaft main bearings

11.07.2019

Engine

470.9 in model 963, 964

Engine

471.9 in model 963, 964

Engine

473.9 in model 963, 964

Modification notes

24.01.2017

Work procedure completely modified.

30.01.2017

Main bearing journal Ø fitted bearing journal width

Engine 471.9

BE03.20-N-1002-02T

1

Crankshaft bearing cap

3

Bolts

5

Timing case

2

Crankshaft fitted bearing cap

4

Turning device

A

Key figures

 Caution

Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil

Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.

AS18.00-Z-0001-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-N-5000-01H

Topical note

Notes on evaluating running surface on crankshaft thrust bearing and on journal

AH03.20-N-0001-03MD

 

Remove/install

1

Remove oil pan

Plastic oil pan

AR01.45-W-7520H

Light alloy oil pan

AR01.45-W-7525HA

2

Remove oil pump

ENGINE 470.9

AR18.10-W-6020HA

ENGINE 471.9, 473.9

AR18.10-W-6020H

3

Attach turning device (4) to timing case (5)

AR03.30-W-1600-03H

 Screw/bolt, cap of TDC inspection hole to timing case

*BA01.60-N-1001-01N

 Bolt, turning device to timing case

*BA01.60-N-1002-01N

 Vehicles with code A1A(Front axle air-sprung)Holder for front axle travel sensor to crossmember

*BA32.30-N-1005-04B

 Turning device

*904589046300

4

Determine and note down crankshaft end play

Determine the crankshaft end play before removal

AR03.20-W-4291-07H

Determine the crankshaft end play after installation

AR03.20-W-4291-08H

 Installation: After installation of the crankshaft bearing caps (1) and the crankshaft fitted bearing cap (2), the crankshaft end play must be checked again.

Main bearing axial play

*BE03.20-N-1007-02T

 Dial gage

*001589532100

5

Check markings on the crankshaft bearing caps (1) and crankshaft fitted bearing cap (2) and, if necessary, mark the installation location

 The crankshaft bearing caps (1) and the crankshaft fitted bearing cap (2) are marked with identification numbers (A) and installed in ascending order starting opposite the output side.

6

Loosen the screws (3) in succession from the crankshaft bearing caps (1) and the crankshaft fitted bearing cap (2) and reapply by hand immediately

Loosening procedure

AR03.20-W-4351-10H

Tightening specification

AR03.20-W-4351-06H


The screw/bolts (3) must not be loosened.
The crankshaft will otherwise lower too much thus damaging the radial shaft sealing rings and cassette-type sealing ring.

 To do this follow loosening procedure.
The heads of the screws (3) must lie on the crankshaft bearing caps (1) and crankshaft fitted bearing cap (2).

 Installation: Observe tightening specification.

 Bolt, crankshaft bearing cap to crankcase

*BA01.40-N-1001-02A

 Torque multiplier

*000589021300

 Socket set

*001589200900

7

Install new fitted bearing of the crankshaft on the crankshaft fitted bearing cap (2)

Install new thrust bearing of the fitted bearing cap

AR03.20-W-4341-05H

Determine thickness of the crankshaft fitted bearing thrust plates

AR03.20-W-4351-01H


All crankshaft bearing caps (1) must be installed.
The crankshaft will otherwise lower too much thus damaging the radial shaft sealing rings and cassette-type sealing ring.

Thickness of thrust plates for fitted bearing

*BE03.20-N-1006-02T

Main bearing journal Ø fitted bearing journal width

*BE03.20-N-1002-02T

Main bearing axial play

*BE03.20-N-1007-02T

Engine 470.9, 473.9, engine 471.9 up to engine end number 030492, engine 471.9 as of engine end number 030493Bolt, crankshaft bearing cap to crankcase

*BE01.40-N-1001-04A

 Extraction and insertion tool

*470589066300

 Dial gage

*001589532100

 Turning device

*904589046300

 Impact extractor

*602589003300

 Puller

*470589023300

 Long wedge

*115589035900

8

Install new main bearings of the crankshaft on the crankshaft bearing caps (1) in succession

AR03.20-W-4341-04H


Only one crankshaft bearing cap (1) may be removed at any one time.
The crankshaft will otherwise lower too much thus damaging the radial shaft sealing rings and cassette-type sealing ring.

Main bearing journal Ø, main bearing journal width (except main bearing fitted bearing journal)

*BE03.20-N-1001-02T

Engine 470.9, 473.9, engine 471.9 up to engine end number 030492, engine 471.9 as of engine end number 030493Bolt, crankshaft bearing cap to crankcase

*BE01.40-N-1001-04A

 Extraction and insertion tool

*470589066300

 Turning device

*904589046300

 Impact extractor

*602589003300

 Puller

*470589023300

 Long wedge

*115589035900

9

Install in the reverse order

Check values for crankcase

Number

Designation

Engine 470.9

Engine 471.9 up to engine number 030492

BE01.40-N-1001-04A

Bolt, crankshaft bearing cap to crankcase

Thread Ø

M

18x2

18x2

Length of shank when new

mm

175,5

171,6

Permissible shank length

mm

179,5

175,5

Check values for crankcase

Number

Designation

Engine 471.9 as of engine number 030493

Engine 473.9

BE01.40-N-1001-04A

Bolt, crankshaft bearing cap to crankcase

Thread Ø

M

18x2

20x2

Length of shank when new

mm

175,5

196,2

Permissible shank length

mm

179,5

200,5

Check values of crankshaft

Number

Designation

Engine 470.9

Engine 471.9

BE03.20-N-1001-02T

Main bearing journal Ø, main bearing journal width (except main bearing fitted bearing journal)

Standard Ø

mm

107,980...108,000

113,980...114,000

Standard width

mm

45,000...45,250

47,500...47,750

Deviation Ø 0.25

mm

107,730...107,750

113,730...113,750

Width deviation 0.25

mm

45,000...45,250

47,500...47,750

Deviation Ø 0.50

mm

107,480...107,500

113,480...113,500

Width deviation 0.50

mm

45,000...45,250

47,500...47,750

Deviation Ø 0.75

mm

107,230...107,250

113,230...113,250

Width deviation 0.75

mm

45,000...45,250

47,500...47,750

Deviation Ø 1.00

mm

106,980...107,000

112,980...113,000

Width deviation 1.00

mm

45,000...45,250

47,500...47,750

Check values of crankshaft

Number

Designation

Engine 473.9

BE03.20-N-1001-02T

Main bearing journal Ø, main bearing journal width (except main bearing fitted bearing journal)

Standard Ø

mm

119,980...120,000

Standard width

mm

50,000...50,250

Deviation Ø 0.25

mm

119,730...119,750

Width deviation 0.25

mm

50,000...50,250

Deviation Ø 0.50

mm

119,480...119,500

Width deviation 0.50

mm

50,000...50,250

Deviation Ø 0.75

mm

119,230...119,250

Width deviation 0.75

mm

50,000...50,250

Deviation Ø 1.00

mm

118,980...119,000

Width deviation 1.00

mm

50,000...50,250

Check values of crankshaft

Number

Designation

Engine 470.9

Engine 471.9

BE03.20-N-1002-02T

Main bearing journal Ø fitted bearing journal width

Standard Ø

mm

107,980...108,000

113,980...114,00

Standard width

mm

45,000...45,062

47,500...47,600

Deviation Ø 0.25

mm

107,730...107,750

113,730...113,750

Width deviation 0.50

mm

45,500...45,562

48,000...48,100

Deviation Ø 0.50

mm

107,480...107,500

113,480...113,500

Width deviation 0.50

mm

45,500...45,562

48,000...48,100

Deviation Ø 0.75

mm

107,230...107,250

113,230...113,250

Width deviation 1.00

mm

46,000...46,062

48,500...48,600

Deviation Ø 1.00

mm

106,980...107,000

112,980...113,000

Width deviation 1.00

mm

46,000...46,062

48,500...48,600

Check values of crankshaft

Number

Designation

Engine 473.9

BE03.20-N-1002-02T

Main bearing journal Ø fitted bearing journal width

Standard Ø

mm

119,980...120,000

Standard width

mm

50,000...50,100

Deviation Ø 0.25

mm

119,730...119,750

Width deviation 0.50

mm

49,500...49,600

Deviation Ø 0.50

mm

119,480...119,500

Width deviation 0.50

mm

49,500...49,600

Deviation Ø 0.75

mm

119,230...119,250

Width deviation 1.00

mm

49,000...49,100

Deviation Ø 1.00

mm

118,980...119,000

Width deviation 1.00

mm

49,000...49,100

Check values of crankshaft

Number

Designation

Engine 470.9

Engine 471.9

BE03.20-N-1006-02T

Thickness of thrust plates for fitted bearing

Default

mm

3,500...3,550

3,500...3,550

Deviation 0.50

mm

3,750...3,800

3,750...3,800

Deviation 1.00

mm

4,000...4,050

4,000...4,050

Check values of crankshaft

Number

Designation

Engine 473.9

BE03.20-N-1006-02T

Thickness of thrust plates for fitted bearing

Default

mm

3,500...3,550

Deviation 0.50

mm

3,750...3,800

Deviation 1.00

mm

4,000...4,050

Check values of crankshaft

Number

Designation

Engine 470.9

Engine 471.9

BE03.20-N-1007-02T

Main bearing axial play

mm

0,200...0,401

0,200...0,401

Check values of crankshaft

Number

Designation

Engine 473.9

BE03.20-N-1007-02T

Main bearing axial play

mm

0,200...0,401

 Crankcase, end cover

Number

Designation

Engine 470.9

Engine 471.9

BA01.40-N-1001-02A

Bolt, crankshaft bearing cap to crankcase

M18x2

Stage 1

Nm

50

50

Stage 2

Nm

150

150

Stage 3

Nm

300

300

Stage 4

°

90

90

M20x2

Stage 1

Nm

–

–

Stage 2

Nm

–

–

Stage 3

Nm

–

–

Stage 4

°

–

–

Stage 5

°

–

–

 Crankcase, end cover

Number

Designation

Engine 473.9

BA01.40-N-1001-02A

Bolt, crankshaft bearing cap to crankcase

M18x2

Stage 1

Nm

–

Stage 2

Nm

–

Stage 3

Nm

–

Stage 4

°

–

M20x2

Stage 1

Nm

50

Stage 2

Nm

150

Stage 3

Nm

250

Stage 4

°

90

Stage 5

°

90

 Timing case

Number

Designation

Engine 470.9, 471.9

Engine 473.9

BA01.60-N-1001-01N

Screw/bolt, cap of TDC inspection hole to timing case

Nm

30

30

 Timing case

Number

Designation

Engine 470.9, 471.9

Engine 473.9

BA01.60-N-1002-01N

Bolt, turning device to timing case

Nm

30

30

 Level control

Number

Designation

Model 963, 964

BA32.30-N-1005-04B

Holder for front axle travel sensor to crossmember

M10

Nm

50