CHEAT SHEET: Tightening Torques

Tightening torques (Nm)*

Engine tightening torques

	ML320	ML55	Comments
Valve cover (kit)	8 Nm	9 Nm
Camshaft bearing:
M 7 x 84	10 Nm + 90 °	10 Nm + 90 °
M 7x45	15 Nm	15 Nm
Camshaft drive gear
Stage 01	50 Nm	50 Nm
Stage 02	90 °	90 °
Chain tensioner	80 Nm	80 Nm
Timing Cover	20 Nm
Guide Roller - Belt	20 Nm
Length of new cylinder head bolts	141.5 mm	141.5 mm
Maximum length of cylinder head bolts	144.5 mm	144.5 mm
Cylinder head retaining bolts			Observe the length of the bolts.
Screw (s) 1 - 8, Step 01	10 Nm	10 Nm	*ML55 Screw (s) 1 - 10, Step 01
Screw (s) 1 - 8, Stage 02	30 Nm	30 Nm	*ML55 Screw (s) 1 - 10, Stage 02
Screw (s) 1 - 8, Stage 03	90 °	90 °	*ML55 Screw (s) 1 - 10, Stage 03
Screw (s) 1 - 8, Step 04	90 °	90 °	*ML55 Screw (s) 1 - 10, Step 04
Screw (s) 9-12, Step 05	20 Nm	20 Nm	*ML55 Screw (s) 11 - 14, Step 05
Intake manifold	20 Nm	20 Nm
Exhaust manifold	16 Nm	16 Nm
Spark plug	28 Nm	28 Nm
Knock sensor	20 Nm	20 Nm
Belt pulley - cooling pump	9 Nm
Coolant Pump
M6	10 Nm
M8	25 Nm
M6, Thread not pre-cut	14 Nm
M8, Thread not pre-cut	35 Nm
Crankshaft center screw
Stage 01	200 Nm	200 Nm
Stage 02	95 °	95 °
Flywheel
Stage 01	45 Nm	45 Nm
Stage 02	90 °	90 °
Torque converter
M8	42 Nm
Angle Connection, Stage 01	4 Nm
Angled Screw Connection, Stage 02	30 Nm + 90 °
Oil drain screw (s)	30 Nm	30 Nm
Oil sump
M6, Upper oil pan	9 Nm	9 Nm
M8, Upper oil pan	20 Nm	20 Nm
Lower part of the oil pan	14 Nm	14 Nm
Oil filter housing	25 Nm	25 Nm
Connecting rod bearing
Stage 01	5 Nm	5 Nm
Stage 02	25 Nm	25 Nm
Stage 03	90 °	90 °
Main bearing
M8	20 Nm + 90 °
M8, screw connection on the side	30 Nm
M10	5 Nm + 30 Nm + 90 °
Motor holder - to engine support	55 Nm
Motor bearing
to the supporting beam of the bridge	35 Nm
to the traverse, behind	30 Nm
to the gearbox	40 Nm
Oxygen sensor	55 Nm	55 Nm
Generator	42 Nm
Starter	42 Nm
Air conditioning compressor - on bracket	20 Nm
Holder - air conditioning compressor to the crankcase	20 Nm
Air conditioner compressor pressure line	20 Nm
Power steering pump to the bracket	25 Nm
Bracket for power steering pump to the crankcase	25 Nm
Hydraulic line (s) to the power steering pump
Reverse drain	2 Nm
M16 x1.5	45 Nm
Belt pulley power steering pump	25 Nm

Tightening torques on the front undercarriage

Front axle stabilizer bearing support		Notes
to the wishbone	68 Nm
support bracket	50 Nm
Front axle upper wishbone
to the frame	120 Nm
to the steering knuckle	50 Nm
Front axle lower wishbone
in front, on the bearing beam of the bridge	135 Nm
behind, on the supporting beam of the bridge	30 Nm
Wheel mount	150 Nm	(110 ft lbs)
Front wheel hub / bearing	490 Nm
Tie rod head to steering knuckle	55 Nm
Tie rod end to tie rod	50 Nm
Shock absorber
to the wishbone	130 Nm
to the body (to frame)	30 Nm
Front axle independent suspension joint on steering knuckle	300 Nm

Brake tightening torques

Front disc brake caliper		Notes
to the steering knuckle / caliper mounting bolts	180 Nm	*use 21mm socket (for ML55)
Guide	30 Nm
Rear disc brake caliper
Caliper Mounting Bolts - with rigid disc brake caliper, fixed	115 Nm
rotor / brake disc hex screw	23 Nm
Air valve / Bleeder Screw	9 Nm	*7-10 Nm - use 8mm std or box wrench
Sensor - wheel speed	8 Nm
Brake line	18 Nm	usee 11mm flange* wrench only
Brake hose	18 Nm	*use 13mm open wrench
Brake hose, Banjo Bolt?	33 Nm	*use 15mm socket
Brake pad wear sensor	9 Nm

Tightening torques on the rear undercarriage

Wheel mount	150 Nm (110 ft-lbs)	150 Nm (110 ft-lbs)	Notes
Rear wheel hub / bearing	490 Nm	490 Nm

Tightening torques for gearbox

Drive shaft		Notes
rear, center nut	490 Nm
front, center nut	490 Nm
Gearbox oil drain plug	20 Nm
Torque converter oil drain plug
M3	10 Nm
M10	15 Nm
Oil drain plug, transfer case	30 Nm
Transmission oil pan	8 Nm

*formula for conversion :

ft - lb = Nm x 0.73756

*more to be added soon... list to be updated (entering all values manually!!!!)

CHEAT SHEET: Tightening Torques

cmitch

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