Remove and Install Chain Tensioner Piston

REMOVING AND INSTALLING PISTON FOR CHAIN TENSIONER






- Unscrew plug (1).

CAUTION:
- Strong spring pressure.
- Remove spring (3) and piston (4).

Installation Note: Replace seal (2).






Installation Note:
- Check length of spring (3). Nominal value: 159 ± 0.5 mm (6.260 ± 0.020").
- Conically wound end of spring faces plug (1).
Tightening torque:
Plug (1) 40 ± 2 Nm (29 ± 1.5 ft. lbs.).
Cylinder (5) 50 ± 2 Nm (36 ± 1.5 ft. lbs.).







NOTE: Piston (4) and cylinder (5) are matched - code 1 or 2. Only install parts with same code.

- Install cylinder with groove facing back (as seen looking forward in car) and position with groove facing up.
- Guide piston opening into tensioning rail.






- Unscrew nipple (7) - replace O-ring (8) if necessary.
- Add engine oil, until oil runs out of nipple (7).
- Tighten nipple (7).