engine

Head Gaskets - Both Torque Specs

for 2012 Mercedes-Benz ML350 W166 3.5L V6 M276 · AWD

Units

16 fasteners

Seq

Component

Torque

Angle

—

Cam Adjuster Solenoid

Replace O-ring when reinstalling.

9 lb-ft · 12 Nm

—

Camshaft Bearing Caps

Critical

Tighten evenly in sequence to seat camshaft.

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

—

Crankshaft Pulley Bolt

Critical

Often TTY - check spec, may require impact

133 lb-ft · 180 Nm

—

Cylinder Head Bolts

Critical

Multi-step + angle

75 lb-ft · 101 Nm

—

Cylinder Head Bolts (M11)

Critical

REPLACE BOLTS. Step 1: 15 lb-ft. Step 2: +90°. Step 3: +90°. Tighten in sequence from center outward.

15 lb-ft · 20 Nm

90°

—

Exhaust Manifold Nuts

Critical

29 lb-ft · 39 Nm

—

Intake Manifold Bolts

Critical

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

—

Sensor Mounting Bolts

7 lb-ft · 10 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

—

VVT Solenoid Bolt

7 lb-ft · 10 Nm

—

2012 MERCEDES-BENZ ML350 W166

16 fasteners