Tightening procedure for crankshaft bearing caps

AR03.20-P-4351-02MR

Tightening procedure for crankshaft bearing caps

Topical note

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

AH00.00-P-0020-01A

Engine

133, 139, 260, 270, 274, 282

 Crankshaft bearing cap

Number

Designation

Engine 133

Engine 139

BA03.20-P-1001-01B

Bolt for crankshaft bearing cap

Stage 1

Nm

38

40

Stage 2

°

90

90

 Crankshaft bearing cap

Number

Designation

Engine 260

Engine 270

BA03.20-P-1001-01B

Bolt for crankshaft bearing cap

Stage 1

Nm

36

36

Stage 2

°

120

120

 Crankshaft bearing cap

Number

Designation

Engine 274

BA03.20-P-1001-01B

Bolt for crankshaft bearing cap

Stage 1

Nm

36

Stage 2

°

120

 Crankshaft

Number

Designation

Engine 282

BA03.20-P-1001-01P

Bolt, crankshaft bearing cap to crankcase

M14

Stage 1

Nm

32

Stage 2

°

63

Shown on engine 274 from below

1

Oil crankshaft bearing cap bolts on thread and bolt head contact surface.

2

Tighten crankshaft bearing cap bolts in the numerical sequence Engine 133, 139, 260, 270, 274
  Engine 282  .

 Observe torque and tightening angle of the crankshaft bearing cap bolts.

 If no angle tightener is available, continue turning crankshaft bearing cap bolts with a socket wrench and breaker bar in one move to specified angle. To exclude an angular error, do not use a bending rod torque wrench when tightening.