Check crankshaft in removed state

AR03.20-P-4463-01LF

Check crankshaft in removed state

Engine

276 in model 217, 221, 222, 231

Check values for crankcase

Number

Designation

Engine 276

BE01.40-P-1001-04F

Crankshaft bearing

Basic bore diameter

mm

68,500…68,519

Stage 1 (No. 1)

mm

68,500…68,506

Stage 2 (No. 2)

mm

68,506…68,513

Stage 3 (No. 3)

mm

68,513…68,519

Check values for crankcase

Number

Designation

Engine 276

BE01.40-P-1002-04F

Basic bore width at fit bearing

mm

21,127…21,160

Check values for crankcase

Number

Designation

Engine 276

BE01.40-P-1003-04F

Permissible out-of-roundness and conicity of basic bore

mm

0,03

Check values of crankshaft

Number

Designation

Engine 276

BE03.20-P-1001-02J

Crankshaft journal Ø

Nominal Ø

mm

63,945...63,965

Repair stage 1

Blue (B)

mm

63,961...63,965

2nd repair stage

Yellow (G)

mm

63,957...63,961

Repair stage 3

Red (R)

mm

63,953...63,957

Repair stage 4

White (W)

mm

63,949...63,953

Repair stage 5

Violet (V)

mm

63,945...63,949

Check values of crankshaft

Number

Designation

Engine 276

BE03.20-P-1002-02J

Crankshaft journal width at fit bearing

Colorless marking (N) / 0

mm

25,500...25,533

 Crankshaft bearing cap

Number

Designation

Engine 276

BA03.20-P-1001-01D

Bolt, crankshaft bearing cap

M8

Stage 1

Nm

-

Stage 2

°

-

M9

Stage 1

Nm

27

Stage 2

°

90

 Crankshaft bearing cap

Number

Designation

Engine 276

BA03.20-P-1002-01D

Side bolt for crankshaft bearing cap

M8

Stage 1

Nm

20

Stage 2

°

90

 Crankshaft bearing cap

Number

Designation

Engine 276

BA03.20-P-1003-01D

Bolt, crankshaft bearing cap

M10

Stage 1

Nm

5

Stage 2

Nm

40

Stage 3

°

90

1

Check all bearing points of the crankshaft (1) for traces of wear, cross scores, notches, blue discoloration, and damage.

For traces of wear, cross scores, notches, blue coloration and damage.



Replace crankshaft (1).

2

Check contact surfaces of the crankshaft bearing shells (6) and thrust surfaces of the thrust plates (7) on the crankcase for traces of wear and damage.

In cases of traces of wear and damage.



Replace crankcase and crankshaft (1).

3

Check contact surfaces of the crankshaft bearing shells (5) in the crankshaft bearing caps (2) for traces of wear and damage.

In cases of traces of wear and damage.



Replace crankcase and crankshaft (1).

4

Check the contact surface of the crankshaft bearing shell (5) and the thrust surfaces of the thrust plates (4) on the crankshaft bearing cap (3) for traces of wear and damage.

In cases of traces of wear and damage.



Replace crankcase and crankshaft (1).

5

Measure basic bore width for thrust bearing on crankshaft bearing cap (3).

 Commercially available devices/tools
Quick caliper for external measurements

If the measured value lies outside the tolerance.



Replace crankcase and crankshaft (1).

6

Measure the diameters at the crankshaft bearing journals. 

 Commercially available devices/tools
Outside micrometer

If the measured values are outside the permissible tolerance range:



Replace crankshaft (1).

7

Measure the crankshaft bearing journal width at the thrust bearing. 

 Commercially available devices/tools
Quick calipers for internal measurements

If the measured value is outside the tolerance range.



Replace crankshaft (1).

8

Install the crankshaft bearing caps (2) without crankshaft bearing shells (5, 6)      .

9

Install the crankshaft bearing cap (3) without crankshaft bearing shells (5, 6) and without thrust plates (4, 7)      .

10

Measure the basic bore diameters in directions A, B and C using an inside caliper.   

 Commercially available devices/tools
Inside caliper

The measured values lie outside the tolerance.



Replace crankcase and crankshaft (1).

11

Remove the crankcase bearing caps (2, 3).