Remove/install crankshaft

AR03.20-P-4351MFD

Remove/install crankshaft

06.03.2020

Engine

282 in model 118, 177, 247

1

Screw

2

Screw

3

Screw

4

Screw

5

Screw

6

Bearing bridge

7

Crankshaft bearing cap

8

Crankcase

14

Timing chain drive gear

7

Crankshaft bearing cap

10

Crankshaft

12

Thrust plates

8

Crankcase

11

Bolts

13

Crankshaft bearing shell

9

Crankshaft bearing shell

 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

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

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

AH00.00-P-0020-01A



Remove

1

Remove oil pan.

AR01.45-P-7500MFD

2

Mark the installation position on the connecting rod bearing caps and connecting rods.

If the connecting rods continue to be used.


The connecting rods and the connecting rod bearing caps are cracked (broken).
Do not interchange the connecting rod bearing caps.
Engine damage can occur otherwise.

3

Remove connecting rod bolts and remove connecting rod bearing caps.


Ensure that the oil spray nozzles cannot be bent or damaged.
Engine damage can occur otherwise.

 When turning crankshaft (10), ensure that connecting rods do not tilt.

4

Mark connecting rod bearing shells relative to associated connecting rod and connecting rod bearing cap.

If the connecting rod bearing shells continue to be used.


Do not interchange connecting rod bearing shells.
Engine damage can occur otherwise.

5

Remove connecting rod bearing shells.

6

Determine end play of crankshaft main bearing.



000 588 00 31 00 Assembly stand for cars

WS01.00-N-3028B

AR03.20-P-4291-03MR

Crankshaft bearing clearance

*BE03.20-P-1001-04K

 Dial indicator holder

*363589022100

 Dial gage

*001589322100

If the maximum value of the crankshaft main bearing end play is exceeded,



Install new thrust plates (12) and perform check again.

If the maximum value of the crankshaft main bearing end play is exceeded again,



replace crankshaft (10), bottom crankshaft bearing shells (9), top crankshaft bearing shells (13), connecting rod bearing shells, and crankcase (8).

7

Remove timing chain drive gear (14).

8

Unscrew screws (1–5) in reverse numerical order and remove bearing bridge (6).

9

Mark crankshaft bearing caps (7) relative to the crankcase (8).


The crankshaft bearing caps (7) and crankcase (8) are manufactured together. Do not interchange.
Engine damage can occur otherwise.

10

Loosen screws (11) of the crankshaft bearing caps (7) in reverse order to the tightening procedure and remove.

AR03.20-P-4351-02MR

11

Remove crankshaft bearing caps (7).

 Carefully pry out crankshaft bearing caps (7).

12

Mark crankshaft bearing shells (9) relative to the respective crankshaft bearing caps (7).

If the crankshaft bearing shells (9) continue to be used.

13

Remove crankshaft bearing shells (9) from the crankshaft bearing caps (7).

14

Remove crankshaft (10) from the crankcase (8).

15

Mark the crankshaft bearing shells (13) relative to the crankcase (8).

If the crankshaft bearing shells (13) continue to be used.

16

Mark thrust plates (12) relative to the crankcase (8).

If the thrust plates (12) continue to be used.

17

Remove the crankshaft bearing shells (13) and thrust plates (12) from the crankcase (8).

18

Clean all parts of crank assembly.


The parts of the crank assembly must be absolutely free of soiling.
Engine damage can occur otherwise.

Assembly cleaner

*BR00.45-Z-1028-04A



Check

19

Check connecting rod bearing shells and connecting rod journals for wear and damage.

If the crankshaft (10) continues to be used.

Notes on assessing wear on connecting rod bearings and connecting rod journals

AH03.10-P-0001-03MM

If there is a problem,



replace connecting rod bearing shells or crankshaft (10).

AR03.10-P-6111-05MFD



Specified engine oils (service) - Overview

BB00.40-P-0223-02A

Connecting rod journal Ø

*BE03.20-P-1002-02N

Large connecting rod small end Ø

*BE03.10-P-1001-01J

20

Check crankshaft (10).

If the crankshaft (10) continues to be used.

Information on assessing wear of main bearings and main bearing journals

AH03.20-P-1000-02MM

AR03.20-P-4463-01MR

Crankshaft bearing

*BE01.40-P-1001-04E

 Bolt, crankshaft bearing cap to crankcase

*BA03.20-P-1001-01P

Main bearing journal Ø

*BE03.20-P-1001-02N

 Dial gage

*001589532100

If a new crankshaft (10) is installed,



replace crankshaft bearing shells (9, 13) and connecting rod bearing shells as well.

21

Check crankshaft bearing shells (9, 13) and connecting rod bearing shells for wear and damage.

If there are problems,



replace crankshaft bearing shells (9, 13), connecting rod bearing shells, and crankshaft (10).

22

Check remaining power unit components for wear and damage; replace if necessary.



Install

23.1

Assign crankshaft bearing shells (9, 13) to the crankshaft bearing caps (7) and crankcase (8).

If new crankshaft bearing shells (9, 13) are installed.

AR03.20-P-4360-01MFD

Bearing shells for crankcase and bearing cap

*BE03.20-P-1001-03Q

Main bearing journal Ø

*BE03.20-P-1001-02N

Crankshaft bearing

*BE01.40-P-1001-04E

23.2

Assign crankshaft bearing shells (9, 13) to crankshaft bearing caps (7) and crankcase (8) based on the markings.

If the crankshaft bearing shells (9, 13) continue to be used.

24

Assign thrust plates (12) to the crankcase (8).

Thrust plate width

*BE03.20-P-1001-08B

Crankshaft bearing clearance

*BE03.20-P-1001-04K

25

Wet crankshaft bearing shells (9, 13) and thrust plates (12) with engine oil.



Specified engine oils (service) - Overview

BB00.40-P-0223-02A

26

Insert crankshaft bearing shells (13) and thrust plates (12) into crankcase (8).


Observe installation position and assignment.
Engine damage can occur otherwise.

 The grooves (arrows) of the thrust plates (12) are attached on one side and must be visible after being inserted.

27

Wet main bearing journals and connecting rod journals of the crankshaft (10) with engine oil.



Specified engine oils (service) - Overview

BB00.40-P-0223-02A

28

Position crankshaft (10) in crankcase (8).

29

Insert crankshaft bearing shells (9) in the crankshaft bearing caps (7).


Observe installation position and assignment.
Engine damage can occur otherwise.

30

Insert crankshaft bearing caps (7) in the crankcase (8).


Observe installation position and assignment.
Engine damage can occur otherwise.

31

Wet bolt heads of the screws (11) with engine oil.



Specified engine oils (service) - Overview

BB00.40-P-0223-02A

32

Tighten screws (11) of the crankshaft bearing caps (7) and fasten.

AR03.20-P-4351-02MR

 Bolt, crankshaft bearing cap to crankcase

*BA03.20-P-1001-01P

33

Install bearing bridge (6), tighten screws (1–5) in numerical order, and screw in.

 Observe alignment of the bearing bridge (6). The arrow at the height of the screw (3) points in the direction of the timing case.

 Bolt, bearing bridge to crankshaft bearing cap

*BA03.20-P-1002-01P

34

Install pistons.

AR03.10-P-7021MFD

35

Install oil pan.

AR01.45-P-7500MFD

 Only install lower engine cover after the leak test.



Check

36

Check engine oil level and correct if necessary.



AP18.00-P-1812MFA


Vehicle must be horizontal and standing on its wheels.
Measurement errors occur otherwise.


Never pour in engine oil to above the maximum value.
Engine damage will occur otherwise.

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

 Warning

Risk of burn injuries, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.

Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.

AS49.00-Z-0001-01A

37

Perform engine test run; in this connection, check engine for proper operation and leak tightness.

Check values for crankcase

Number

Designation

Engine 282

BE01.40-P-1001-04E

Crankshaft bearing

Basic bore diameter

mm

46,029...46,049

Embossed mark

A

mm

46,029...< 46,030

B

mm

46,030...< 46,031

C

mm

46,031...< 46,032

D

mm

46,032...< 46,033

E

mm

46,033...< 46,034

F

mm

46,034...< 46,035

G

mm

46,035...< 46,036

H

mm

46,036...< 46,037

J

mm

46,037...< 46,038

K

mm

46,038...< 46,039

L

mm

46,039...< 46,040

M

mm

46,040...< 46,041

N

mm

46,041...< 46,042

P

mm

46,042...< 46,043

R

mm

46,043...< 46,044

S

mm

46,044...< 46,045

T

mm

46,045...< 46,046

U

mm

46,046...< 46,047

V

mm

46,047...< 46,048

W

mm

46,048...46,049

Check values for connecting rods

Number

Designation

Engine 282

BE03.10-P-1001-01J

Large connecting rod small end Ø

Reference Ø

mm

43,683

Embossed mark

A

mm

43,677...< 43,678

B

mm

43,678...< 43,679

C

mm

43,679...< 43,680

D

mm

43,680...< 43,681

E

mm

43,681...< 43,682

F

mm

43,682...< 43,683

G

mm

43,683...< 43,684

H

mm

43,684...< 43,685

J

mm

43,685...< 43,686

K

mm

43,686...< 43,687

L

mm

43,687...< 43,688

M

mm

43,688...< 43,689

N

mm

43,689...43,690

Check values of crankshaft

Number

Designation

Engine 282

BE03.20-P-1001-02N

Main bearing journal Ø

Nominal Ø

mm

41,990...42,010

Embossed mark

A

mm

42,010...42,009

B

mm

< 42,009...42,008

C

mm

< 42,008...42,007

D

mm

< 42,007...42,006

E

mm

< 42,006...42,005

F

mm

< 42,005...42,004

G

mm

< 42,004...42,003

H

mm

< 42,003...42,002

J

mm

< 42,002...42,001

K

mm

< 42,001...42,000

L

mm

< 42,000...41,999

M

mm

< 41,999...41,998

N

mm

< 41,998...41,997

P

mm

< 41,997...41,996

R

mm

< 41,996...41,995

S

mm

< 41,995...41,994

T

mm

< 41,994...41,993

U

mm

< 41,993...41,992

V

mm

< 41,992...41,991

W

mm

< 41,991...41,990

Check values for crankshaft main bearing shells

Number

Designation

Engine 282

BE03.20-P-1001-03Q

Bearing shells for crankcase and bearing cap

Color coding

Red

Upper half/lower half of bearing shell thickness

mm

2,009...2,013

Color coding

Blue

Upper half/lower half of bearing shell thickness

mm

2,006...2,010

Color coding

yellow

Upper half/lower half of bearing shell thickness

mm

2,003...2,007

Color coding

green

Upper half/lower half of bearing shell thickness

mm

2,000...2,004

Color coding

white

Upper half/lower half of bearing shell thickness

mm

1,997...2,001

Color coding

Black

Upper half/lower half of bearing shell thickness

mm

1,994...1,998

Test specifications for crankshaft bearing clearance

Number

Designation

Engine 282

BE03.20-P-1001-04K

Crankshaft bearing clearance

Radial measurement when new

mm

0,032...0,051

Axial measurement when new

mm

0,098...0,300

Thrust plate test specifications

Number

Designation

Engine 282

BE03.20-P-1001-08B

Thrust plate width

mm

1,900...1,950

Check values of crankshaft

Number

Designation

Engine 282

BE03.20-P-1002-02N

Connecting rod journal Ø

Nominal Ø

mm

39,990...40,010

Embossed mark

A

mm

40,010...40,009

B

mm

< 40,009...40,008

C

mm

< 40,008...40,007

D

mm

< 40,007...40,006

E

mm

< 40,006...40,005

F

mm

< 40,005...40,004

G

mm

< 40,004...40,003

H

mm

< 40,003...40,002

J

mm

< 40,002...40,001

K

mm

< 40,001...40,000

L

mm

< 40,000...39,999

M

mm

< 39,999...39,998

N

mm

< 39,998...39,997

P

mm

< 39,997...39,996

R

mm

< 39,996...39,995

S

mm

< 39,995...39,994

T

mm

< 39,994...39,993

U

mm

< 39,993...39,992

V

mm

< 39,992...39,991

W

mm

< 39,991...39,990

 Crankshaft

Number

Designation

Engine 282

BA03.20-P-1001-01P

Bolt, crankshaft bearing cap to crankcase

M14

Stage 1

Nm

32

Stage 2

°

63

 Crankshaft

Number

Designation

Engine 282

BA03.20-P-1002-01P

Bolt, bearing bridge to crankshaft bearing cap

M8

Nm

20

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01