Remove/Install Camshaft Adjuster

Overview
- Remove both upper front covers, install, refer to Replacement. Service and Repair

NOTE: For left camshaft adjuster remove only left cover, for right camshaft adjuster only right cover.

- Set piston of cylinder 1 to 45° before ignition TDC, refer to step 2 below.
- Secure all four camshafts with pins, special tool 111 589 03 15 00, refer to step 3 below.
- Mark timing chain with all four camshaft sprockets relative to each other (check marking when installing), refer to step 4 below.
- Remove chain tensioner, install, refer to Replacement. Service and Repair
- R top guide rails, install, refer to Replacement. Service and Repair

NOTE: Remove only right guide rail for right camshaft adjuster, left guide rail for left camshaft adjuster.

- Unbolt left exhaust camshaft sprocket, bolt on.
Tighten to: 18 Nm.
- Unbolt then take off, armature (4), nut (6), cover (12), right camshaft sprocket (13) with adjusting piston (14), conical spring (14a) and flanged shaft (16), fit on, bolt on, refer to steps 8 and 9 below.

NOTE: If only the left camshaft adjuster is removed, the right one remains installed.

- Take off, unscrew, armature (4), nut (6), cover (12), left camshaft sprocket (13) with adjusting piston (14), conical spring (14a) and flanged shaft (16), screw on and fit on, refer to steps 10 to 19 below.

Procedures
Removal
1. Remove both upper front covers, refer to Replacement. Service and Repair
Remove only left-hand cover for left-hand camshaft adjuster.
Remove only right-hand cover for righthand camshaft adjuster.)





2. Set piston of No. 1 cylinder to 45° before ignition TDC.





3. Secure all four camshafts with pins (1) 111 589 03 16 00.





4. 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.
5. Remove chain tensioner, refer to Replacement. Service and Repair
6. Remove top guide rails, refer to Replacement. Service and Repair
Remove only right guide rail for right camshaft adjuster.
7. Remove fight exhaust camshaft sprocket.





8. Unscrew bolt (3) holding armature (4) in position on face (arrow).
Pull off armature (4).
Tightening torque: 7 Nm.

Part 1 Of 2:

Part 2 Of 2:

9. 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.

Installation





10. Bolt flange shaft (16) onto inlet camshaft (22); pay attention to dowel pin.

NOTE: Replace collar bolts (15); use only once.





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





14. Unscrew thrust nut; hold camshaft adjuster together for this step.
15. Fit on cover (12).
16. Screw on nut (6) with its flat face pointing towards camshaft adjuster (securing slot at front).





17. Tighten nut (6); counter-hold camshaft (22) at hexagon with wrench (03), special tool 119 589 00 01 00.
18. Fit on armature (4) in fixed position.
Refer also to "Armature and Solenoid at Camshaft Adjuster"