Tightening torques for threaded connections

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Bolts of fastening of a head of the block of cylinders
– motors up to SH 79876:
• 1st stage
30 Nm
• 2nd stage
70 Nm
• 3rd stage
unscrew 1/4 turn
• 4th stage
80 Nm
– motors from SH 79876:
• 1st stage
30 Nm
• 2nd stage
70 Nm
• 3rd stage
unscrew 1/4 turn
• 4th stage
70 Nm; then start the engine and keep it running without load for 10 minutes at 3000 rpm, and then leave the engine to cool for at least 3.5 hours
• 5th stage
tighten by 120°
Main bearing caps
100 - 120 Nm.
Connecting rod caps
53 - 63 Nm.
Flywheel:
– 1st stage
20 Nm
– 2nd stage
100 Nm
crankshaft pulley
240 - 260 Nm
Valve lever axle holders
17.5 - 2.5 Nm.
glow plugs
20 - 40 Nm.
nozzles
90 Nm
Timing Chain Eccentric Tensioner
27.5 Nm
Fuel lines
30 – 35 Nm
intake and exhaust manifolds
20 – 25 Nm
cylinder head cover
3 Nm







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