Engine tightening torques

Location

Thread

Tightening torque Nm (ftlb)

Crankshaft/

crankcase

Crankcase bolt joints top

M 12 x 1.5

30 (22) 1st stage

and bottom section (studs)

60° torque angle 2nd stage

M 10

20 (15) 1st stage

50 (37) 2nd stage

M 8

20 (15)

M 6

10(7)

Rotation body on balance shaft

M 6

10 (7), secured with Loctite 270

Cover for balance shaft

M 6

10(7)

housing to upper

crankcase section

Hexagon head bolt

M 8

20 (15)

Hexagon head bolt

M 8x58

15 (11) 1st stage

(bearing saddle)

33 (24) 2nd stage

Left-hand and right-hand

M 8

20 (15)

bearing housing

to upper crankcase section

Sprocket on balance shaft

M 10

45 (33)

Tensioning pulley to

M 10

45 (33)

bearing housing

Water pump to crankcase

M 6

10 (7), secured with Loctite 270

Idler pulley to

M 10

45 (33)

water-pump housing

Tensioning pulley to

M 10

45 (33)

oil pump housing

Oil pump to

M 6

10(7)

crankcase

M 10

45 (33)

Toothed belt tensioner to

M 8

20 (15)

crankcase

Tensioning pulley to

M 10

45 (33)

tensioning lever

Connecting-rod bolts

M 10 x 1.25

25(18) + 90° torque angle

(forged con-rods)

Verbus-Ripp nut

Engine tightening torques

Printed In Germany - II, 1991

10-5

Location

Thread

Tightening torque Nm (ftlb)

Oil pan to crankcase

M 6

hand-tight 1 st stage 4 (3) 2nd stage 10 (7) 3rd stage

Oil pan insert to oil pan

M 5

6 (4), secured with Loctite 270

Oil drain plug

M 20 x 1.5

50 (37)

LH + RH engine support to crankcase

M 10

48 (35)

Flywheel to crankshaft

M 10 x 1.25

40 (29) 1st stage 90 (66) 2nd stage

Sensor brackets to crankcase

M 8

20 (15)

Sensor to bracket

M 6

10 (7)

Sprocket to crankshaft

M 16 x 1.5

210 (155)

Grade

10.9

13 (10)

Mounting of belt cover

M 6

8(6)

Bracket for alternator to crankcase

M 10

45 (33)

Water temperature gauge

M 10 x 1

35 (26)

Temperature sender (coolant or oil)

M 12 X 1.5

15 (11)

Knock sensor

M 8

20 (15) Genuine bolt without washer

Oil pressure sender

M 18 x 1.5

35 (26)

Housing insert in oil pump housing

M 6

10 (7), mating flange sealed with Loctite 574

Radiator fan/thermostat housing to crankcase

M 8

20 (15)

Plug at oil/coolant radiator housing

M 18 x 1.5

35 (26)

Coolant vent plug

M 8 x 1

12 + 3(9 + 2)

Oil filter pressure relief valve

M 20 X 1.5

45 (33) 20 (15)

Location

Thread

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