Measure crankshaft and remount in bearings

AR03.20-G-4355MTA

Measure crankshaft and remount in bearings

28.06.2019

Engine

444.901 in model 000.001

Euro 1

Engine

444.901 in model 000.001

Euro 2

1

Crankshaft

5

Bottom crankshaft bearing cap bolt

2

Crankshaft main bearing shell

6

Crankshaft main bearing cap

3

Crankshaft thrust bearing shell

7

Crankshaft fitted bearing cap

4

Crankshaft bearing cap bolt on side

L

Shank length



Remove

1

Remove crankshaft (1)

AR03.20-G-4351MTA



Check

2

Check crankshaft (1) by means of a visual inspection for damage and cracks

In the event of damage or cracks:



Replace crankshaft (1).

3

Clean crankshaft main bearing shells (2), crankshaft thrust bearing shell (3), and main bearing journal of the crankshaft (1) with a chamois leather and check by means of a visual inspection

Information on assessing wear of main bearings and main bearing journals

AH03.20-N-1000-02A

4

Measure concentricity of the crankshaft (1) at the center crankshaft main bearing journal

AR03.20-G-4351-08MT

Permissible radial runout of fitted bearing when mounted in the outer crankshaft journals

*BE03.20-N-1005-02N

 Dial gage

*001589532100

 Dial indicator holder

*363589022100

5

Check hardness of main bearing and connecting rod journals

AR03.20-G-4351-09MT

Notes on hardness test

AH00.00-N-0012-01A

Hardness of bearing journals

*BE03.20-N-1007-02N

 Hardness tester

*000589202100

6

Check tread of the radial sealing ring on the front crankshaft flange or on the race

If galling is present on the crankshaft flange or on the race:



Mount new race on the crankshaft (1).

AR03.20-G-2570MT

7

Determine crankshaft bearing radial play

AR03.20-G-4291-02MT

Main bearing cap bolt

*BE01.40-N-1007-02O

Crankshaft bearing journal Ø

*BE03.20-N-1001-02N

Radial play

*BE03.20-N-1003-02N

Crankshaft main bearing Ø with inserted main bearing shells

*BE03.20-N-1008-02N

Width of crankshaft fitted bearing journal

*BE03.20-N-1009-02N

Width of crankshaft fitted bearing

*BE03.20-N-1010-02N

Wide crankshaft main bearing journal (except crankshaft fitted bearing journal)

*BE03.20-N-1011-02N

 Bolt, crankshaft bearing cap to crankcase

*BA01.40-N-1002-01R

 Bolt (on the side), crankshaft bearing cap to crankcase

*BA01.40-N-1006-01R

 Torque wrench

*000589392100

 Dial gage

*001589532100

8

Determine connecting rod bearing radial play

AR03.20-G-4291-04MT

Connecting rod bearing inside dia. for connecting rod bearing shells inserted

*BE03.10-N-1001-01R

Connecting rod bearing play

*BE03.10-N-1003-01R

Connecting rod bolt

*BE03.10-N-1008-01R

Connecting rod journal Ø

*BE03.20-N-1002-02N

 Bolt, connecting rod bearing cap to connecting rod

*BA03.10-N-1001-01O

 Dial gage

*001589532100

 Torque wrench

*001589672100

9

Mount crankshaft (1) axially

AR03.20-G-4355-02MT

 The crankshaft thrust bearing cap (7) is installed.

Axial play

*BE03.20-N-1004-02N

Width of crankshaft fitted bearing journal

*BE03.20-N-1009-02N

Width of crankshaft fitted bearing

*BE03.20-N-1010-02N

 Dial gage

*001589532100

10

Measure crankshaft main bearing cap screws (4)

If permissible shank length (L) is exceeded:



replace corresponding crankshaft main bearing cap screw (4).

Main bearing cap bolt

*BE01.40-N-1007-02O



Install

11

Install crankshaft (1)

AR03.20-G-4351MTA

Test and adjustment values for crankcase

Number

Designation

ENGINE 444.901

BE01.40-N-1007-02O

Main bearing cap bolt

Length of shank when new

mm

152,5...153,5

Permissible shank length

mm

156

Test and adjustment values for connecting rod

Number

Designation

ENGINE 444.901

BE03.10-N-1001-01R

Connecting rod bearing inside dia. for connecting rod bearing shells inserted

Default

mm

90,064...90,106

Deviation 0.1

mm

89,964...90,006

Deviation 0.25

mm

89,816...89,856

Deviation 0.5

mm

89,564...89,606

Deviation 0.75

mm

89,314...89,356

Deviation 1.0

mm

89,064...89,106

Test and adjustment values for connecting rod

Number

Designation

ENGINE 444.901

BE03.10-N-1003-01R

Connecting rod bearing play

radial

mm

0,064...0,126

axial

mm

0,240...0,500

Test and adjustment values for connecting rod

Number

Designation

ENGINE 444.901

BE03.10-N-1008-01R

Connecting rod bolt

Thread diameter

M

161,5

Shank length (L) when new

mm

67,2...67,5

Max. shank length (L)

mm

68,5

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1001-02N

Crankshaft bearing journal Ø

Standard

mm

103,98...104,00

Repair stage 0.1

mm

103,88...103,90

Repair stage 0.25

mm

103,73...103,75

Repair stage 0.50

mm

103,48...103,50

Repair stage 0.75

mm

103,23...103,25

Repair stage 1.00

mm

102,98...103,00

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1002-02N

Connecting rod journal Ø

Standard

mm

89,98...90,00

Repair stage 0.1

mm

89,88...89,90

Repair stage 0.25

mm

89,73...89,75

Repair stage 0.50

mm

89,48...89,50

Repair stage 0.75

mm

89,23...89,25

Repair stage 1.00

mm

88,98...89,00

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1003-02N

Radial play

mm

0,087...0,146

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1004-02N

Axial play

mm

0,15...0,322

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1005-02N

Permissible radial runout of fitted bearing when mounted in the outer crankshaft journals

mm

0,08

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1007-02N

Hardness of bearing journals

HRC

54...60

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1008-02N

Crankshaft main bearing Ø with inserted main bearing shells

Standard

mm

104,060...104,106

Deviation 0.1

mm

103,960...104,006

Deviation 0.25

mm

103,810...103,856

Deviation 0.50

mm

103,560...103,606

Deviation 0.75

mm

103,310...103,356

Deviation 1.00

mm

103,060...103,106

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1009-02N

Width of crankshaft fitted bearing journal

Standard

mm

38,000...38,062

Repair stage 0.1

mm

38,000...38,062

Repair stage 0.25

mm

38,500...38,562

Repair stage 0.50

mm

38,500...38,562

Repair stage 0.75

mm

39,000...39,062

Repair stage 1.00

mm

39,000...39,062

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1010-02N

Width of crankshaft fitted bearing

Standard

mm

37,74...37,81

Deviation 0.1

mm

37,74...37,81

Deviation 0.25

mm

38,24...38,31

Deviation 0.50

mm

38,24...38,31

Deviation 0.75

mm

38,74...38,81

Deviation 1.00

mm

38,74...38,81

Test and adjustment values for crankshaft

Number

Designation

ENGINE 444.901

BE03.20-N-1011-02N

Wide crankshaft main bearing journal (except crankshaft fitted bearing journal)

Standard

mm

38,000...38,160

Repair stage 0.1

mm

38,000...38,160

Repair stage 0.25

mm

38,000...38,160

Repair stage 0.5

mm

38,000...38,160

Repair stage 0.75

mm

38,000...38,160

Repair stage 1.00

mm

38,000...38,160

 Crankcase, timing case cover, end cover

Number

Designation

Engine 444.901

BA01.40-N-1002-01R

Bolt, crankshaft bearing cap to crankcase

Stage 1

Nm

315

Stage 2

°

95

 Crankcase, timing case cover, end cover

Number

Designation

Engine 444.901

BA01.40-N-1006-01R

Bolt (on the side), crankshaft bearing cap to crankcase

M12

Nm

90

 Connecting rod

Number

Designation

ENGINE 444.901, 447.903

BA03.10-N-1001-01O

Bolt, connecting rod bearing cap to connecting rod

Stage 1

Nm

100

Stage 2

°

95