Removing and installing camshaft adjuster - RA05001192170X(05-2170)

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Fig 1: Identifying Camshaft Adjuster Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Both front covers	remove, install (01-2120) . NOTE: For left camshaft adjuster remove only left cover, for right camshaft adjuster only right cover.
Piston of cylinder 1	set to 45° before ignition TDC (step 2).
All four camshafts	secure with pins, special tool 111 589 03 15 00 (step 3).
Timing chain with all four camshaft sprockets	mark relative to each other (check marking when installing) (step 4).
Chain tensioner	remove, install (05-3100) .
Top guide rails	remove, install (05-3350) . NOTE: Remove only right guide rail for right camshaft adjuster.
Left exhaust camshaft sprocket	unbolt, bolt on (18 Nm).
Armature (4), nut (6), cover (12), right camshaft	unbolt, take off, fit on, bolt on (steps 8 and 9).
sprocket (13) with adjusting piston (14), conical spring (14a) and flanged shaft (16)	NOTE: If only the left camshaft adjuster is removed, the right one remains installed.
Armature (4), nut (6), cover (12), left camshaft sprocket (13) with adjusting piston (14), conical spring (14a) and flanged shaft (16)	take off, unscrew, screw on and fit on (steps 10 to 19).

Special tools

Fig 2: Identifying Special Tool (119 589 00 01 00)

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Fig 3: Identifying Special Tool (111 589 03 15 00)

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Fig 4: Identifying Special Tool (111 589 01 40 00)

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Fig 5: Identifying Special Tool (000 589 01 10 00)

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Fig 6: Identifying 001 589 72 21 00

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Fig 7: Identifying Special Tool (001 589 66 21 00)

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TIGHTENING TORQUES IN NM AND TIGHTENING ANGLE

Bolt of armature to control piston

1st version bolt+washer⁽¹⁾

2nd version collar bolt⁽²⁾

Initial torque

Angle of rotation

90°

M 20x1,5 nut

Flange shafts to camshaft Torx T 40

1st version bolt+washer⁽¹⁾

2nd version collar bolt⁽²⁾

Initial torque

Angle of rotation

60°

⁽¹⁾	Replace with 2nd version when performing repairs

⁽²⁾	Use only once

Fig 8: Identifying Tightening Torques And Angle Of Rotation

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TIGHTENING TORQUES

Conical spring

Size (d)

Size (D)

Engine 119.96

2.1 mm

51.7 mm

Engine 119.97 1st version⁽¹⁾

2.1 mm

51.7 mm

2nd version⁽¹⁾

2.9 mm

53.3 mm

3rd version⁽²⁾

3.0 mm

53.3 mm

Engine 119.98

3.0 mm

53.5 mm

⁽¹⁾	On engines 119.97 replace 1st and 2nd version by 3rd version when performing repairs

⁽²⁾	Standard as of 12/1992

Fig 9: Identifying Conical Spring Size

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Removal

Remove both front covers (01-2120) .
(Remove only left-hand cover for left-hand camshaft adjuster, right-hand cover for right-hand camshaft adjuster.)
Set piston of No. 1 cylinder to 45° before ignition TDC.

Fig 10: Identifying Cylinder Piston Position
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Secure all four camshafts with pins (1) 111 589 03 15 00.

Fig 11: Identifying Camshaft Pins
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Mark timing chain with all four camshaft timing gears together (arrows).
Installation instruction

Fit on the timing chain in the opposite direction of rotation of engine, beginning at the left exhaust camshaft gear. The markings made previously must again agree.
Remove chain tensioner 05-310 .

Fig 12: Identifying Camshaft Timing Gears
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Remove top guide rails (05-3350) . Remove only right guide rail for right camshaft adjuster.
Remove right exhaust camshaft sprocket.
Unscrew bolt (3) holding armature (4) in position on face (arrow). Pull off armature (4). Tightening torque 7 Nm.

Fig 13: Exploded View Of Armature (1 Of 2)
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Fig 14: Exploded View Of Armature (2 Of 2)
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Take off nut (6), cover (12), left-hand camshaft gear (13) with adjusting piston (14) and conical spring (14a). Unscrew bolts (15) and take flange shaft off intake camshaft.

Fig 15: Exploded View Of Intake Camshaft
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Installing
Bolt flange shaft (16) onto inlet camshaft (22); pay attention to dowel pin.
NOTE: Replace collar bolts (15); use only once.

Fig 16: Identifying Inlet Camshaft Components
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Insert spherical spring (14a) and push adjusting piston (14) onto flange shaft (16) in fixed position (block tooth B).
Screw on thrust nut (02), special tool 111 589 01 40 00.
Push inlet camshaft sprocket (13) into fixed position (block tooth B) onto splines of adjusting piston (14); hold timing chain up for this step.

Fig 17: Identifying Spherical Spring And Camshaft Sprocket
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Unscrew thrust nut; hold camshaft adjuster together for this step.
Fit on cover (12).
Screw on nut (6) with its flat face pointing towards camshaft adjuster (securing slot at front).

Fig 18: Holding Camshaft Adjuster
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Tighten nut (6); counter-hold camshaft (2 2 ) at hexagon with wrench (03), special tool 119 589 00 01 00.
Fit on armature (4) in fixed position.

Pay attention to operation 05-2175.

Fig 19: Identifying Armature And Nut
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