engine

Cylinder Head R&R Torque Specs

for 2012 Mercedes-Benz Sprinter NCV3 3.0L V6 Diesel OM642 · RWD

Units

22 fasteners

Seq

Component

Torque

Angle

—

Camshaft Bearing Cap Bolts

Critical

Tighten in sequence, 3 passes

10 lb-ft · 14 Nm

—

Camshaft Bearing Caps

Critical

Tighten in sequence.

11 lb-ft · 15 Nm

—

Camshaft Cap Bolts

Critical

Tighten in sequence from center outward, multiple passes

10 lb-ft · 14 Nm

—

Camshaft Sprocket Bolt

Critical

Hold cam with wrench on hex

59 lb-ft · 80 Nm

—

Cover Bolts

13 lb-ft · 17 Nm

—

Cylinder Head Bolts

Critical

TTY - tighten in sequence plus angle

22 lb-ft · 30 Nm

—

Cylinder Head Bolts (M12)

Critical

REPLACE BOLTS. Step 1: 22 lb-ft. Step 2: +90°. Step 3: +90°. OM642 head gasket failure is common - use OEM gaskets only.

22 lb-ft · 30 Nm

90°

—

Exhaust Manifold Nuts

Critical

Apply anti-seize, work hot-to-cold

22 lb-ft · 30 Nm

—

Gasket Bolts

Critical

16 lb-ft · 21 Nm

—

Glow Plugs

Use anti-seize. Can seize in aluminum head.

11 lb-ft · 15 Nm

—

Intake Manifold Bolts

Critical

18 lb-ft · 25 Nm

—

Mounting Bolts

Critical

37 lb-ft · 50 Nm

—

Mounting Bolts

21 lb-ft · 28 Nm

—

Oil Drain Plug

Critical

Use new crush washer

26 lb-ft · 35 Nm

—

Rocker Arm Bolts

Critical

Tighten with cam lobe pointing away

22 lb-ft · 30 Nm

—

Rocker Arm Shaft Bolts

Critical

Tighten evenly in sequence

18 lb-ft · 25 Nm

—

Sensor Bolts

8 lb-ft · 11 Nm

—

Thermostat Housing Bolts

11 lb-ft · 15 Nm

—

Timing Chain Guide Bolts

Critical

Replace if worn

9 lb-ft · 12 Nm

—

Timing Chain Tensioner Bolt

Critical

Install with pin/clip to compress

18 lb-ft · 25 Nm

—

Timing Cover Bolts - 8mm

Critical

Tighten in sequence

18 lb-ft · 25 Nm

—

Valve Cover Bolts

Tighten in sequence

7 lb-ft · 10 Nm

—

2012 MERCEDES-BENZ SPRINTER NCV3

22 fasteners