Scania 16 litre engine. Work Description - part 21

 

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Scania 16 litre engine. Work Description - part 21

 

 

0110w14b.mkr

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81

Crankshaft

Removing

The crankshaft must be removed while the 
engine is suspended in the universal stand. Refer 
to Mounting the engine in a universal stand.

1

Remove the oil sump.

2

Remove the flywheel as described in 
Flywheel, removing.

3

Remove the flywheel housing as described 
in Flywheel housing, removing.

4

Remove the oil strainer and the suction line.

5

Remove the poly-V-belts.

6

Remove the fan ring and the fan.

7

Remove the cylinder heads as described in 
Cylinder head, removing.

8

Remove the belt pulleys on the front of the 
crankshaft.

9

Remove the front housing.

10 Remove the crankshaft damper with spacer 

sleeve.

11 Remove the piston cooling nozzles.

IMPORTANT! The piston cooling nozzle must 
not be damaged. The oil jet must hit the piston 
precisely. If it does not, the piston will become 
too warm and result in engine breakdown. 
Damaged nozzles must not be re-aligned, renew 
them instead.

Crankshaft

82

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0110w14b.mkr

12 Turn the engine so that it is vertical.

13 Lift out the pistons and connecting rods. 

Turn the crankshaft so that the piston to be 
removed is at TDC. To be able to rotate the 
crankshaft, the crankshaft gear must be 
secured with two flywheel bolts and two 
50 mm spacers.

1

50 mm long spacers

2

Flywheel bolts

1

2

113 059

Engine, after removing points 1-13

112 

36

2

Crankshaft

112 363

14 Turn the engine upside down.

15 Remove the crankshaft gear.

16 Remove the main bearing caps. Protect the 

oilway in the crankshaft e.g. by winding 
tape around it with the adhesive side out.

Note: The main bearing caps are marked and 
must be refitted in the same place.

17 Remove the lower and upper thrust washers.

18 Lift out the crankshaft.

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83

Fitting

Tightening torques

All parts must be cleaned before fitting.

1

Place the bearing shells in the main bearing 
seats in the engine block and then lubricate 
the bearing surface with engine oil.

Note: The outside of the bearing shells must not 
be lubricated.

2

Lift in the crankshaft.

3

Fit the thrust bearing washers.

4

Place the main bearings in the main bearing 
caps and fit them. Torque tighten the cap 
bolts to 90 Nm +90°.

Note: The main bearing caps are marked and 
must be refitted according to the marks on the 
block.

5

Torque tighten the side bolts to 180 Nm.

Main bearing cap bolts

90 Nm+90

°

Side bolts

180 Nm

Connecting rod cap bolts

50 Nm+90

°

Bolts to crankshaft damper

135 Nm

Bolts to inner belt pulley on crankshaft

92 Nm

112 364

5

5

90 Nm + 90

180 Nm

Crankshaft

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6

Fit the crankshaft gear so that the marks on 
the crankshaft gear and the intermediate 
gear are pointing at each other. Secure the 
gear with two flywheel bolts and two 
50 mm long spacers.

1

50 mm long spacers

2

Flywheel bolts

1

2

113 059

7

Turn the engine so that it is vertical.

8

Fit the piston and connecting rod as 
described in Fitting the piston and 
connecting rod.

9

Fit the connecting rod bearing into the 
connecting rod cap and lubricate the bearing 
surface. Fit the cap. Lubricate the bolts and 
torque tighten them to 50 Nm +90°.

10 Clean the cylinder heads and fit them as 

described in Cylinder head, fitting.

11 Fit the crankshaft damper and spacer sleeve. 

Torque tighten the bolts to 135 Nm.

112 

365

50 Nm + 90

o

Crankshaft

 

 

 

 

 

 

 

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