Part 1

NOTE: During service procedures, refer to the illustration above and the information below.

Component Notes and Information
1 Camshaft sprocket
- For double chain (item -9-)
- Removing and installing, refer to Replacement. Service and Repair
2 Sensor wheel
- For Camshaft Position sensor -G40-
- Contact surfaces of timing chain and sensor wheel must be dry when installing
- Removing and installing, refer to Replacement. Service and Repair
3 Bolt
- Tighten to: 100 Nm (74 ft lb)
- Oil bolt head contacting surface when installing
- To Remove and install: counter-hold with 24 mm open wrench on camshaft, refer to Replacement. Service and Repair
4 Pivot pin
- Tighten to: 25 Nm (18 ft lb)
- For Tensioning plate (item -7-)
5 Seal
- Replace
6 Chain tensioner
- Tighten to: 30 Nm (22 ft lb)
- For double chain (item -9-)
- Bleed before installing refer to Fig 2 below

CAUTION: Only turn the engine with chain tensioner installed!

7 Tensioning plate
- For double chain (item -9-)
8 Sprocket
- For single chain (item -15-)
- Installing, refer to Camshaft Timing. Adjustments
9 Double chain
- Mark direction of rotation before removing refer to Fig. 1 below
- Installing, refer to Camshaft Timing. Adjustments
10 Bolt
- Tighten to: 100 Nm (74 ft lb)
11 Sprocket
- For double chain (item -9-)
- Installing, refer to Camshaft Timing. Adjustments
12 Bolt:
- Tighten to: 10 Nm (7 ft lb)
13 Chain tensioner with tensioning plate
- For single chain (item -15-)
- Before installing: release locking spline in chain tensioner with a small screwdriver and press tensioning plate against tensioner

CAUTION: Only turn the engine with chain tensioner installed!

14 Crankshaft sprocket
- Integral part of crankshaft
- Ground down tooth aligned with main bearing joint: equals TDC for Cyl No. 1, refer to Camshaft Timing. Adjustments
15 Single chain
- Mark direction of rotation before removing refer to Fig. 1 below
- Installing, refer to Camshaft Timing. Adjustments
16 Guide rail
- For single chain (item -15-)
- Remove together with single chain, refer to Camshaft Timing. Adjustments
17 locating pin w/out collar
- Tighten to: 25 Nm (18 ft lb)
- For guide rail (item -16-)
18 locating pin with collar
- Tighten to: 25 Nm (18 ft lb)
- For guide rail (item -21-)
19 Bolt
- Tighten to: 20 Nm (15 ft lb)
- Insert using "D6" locking fluid
20 Bolt
- Tighten to: 20 Nm (15 ft lb)
21 Guide rail
- For double chain (item -9-)
22 Bolt
- Tighten to: 10 Nm (7 ft lb)
- Insert using "D6" locking fluid
23 Thrust washer
24 Intermediate shaft

Procedures





Fig. 1 Marking Single And Double Chains
- Mark single and double chains before removing (e.g. with mark pointing in direction of rotation)

CAUTION: Do NOT mark the timing chain using a punch or any other mechanical device that could weaken the chain.





Fig. 2 Double Chain Tensioner, Bleeding
- Special tools, testers and auxiliary items
Wire (0: 0.8 mm)
- Push piece of wire (0: 0.8 mm) through pressure piston hole -arrow- up to ball valve and press piston and housing together onto stop

NOTE: If the piston moves out again, repeat bleeding procedure.