Removing and installing camshafts: Overview
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
Illustration shows camshafts with accessories
Illustration shows view from the belt pulley side
CAMSHAFT REMOVAL/INSTALLATION
| No. | Designation | Qty. | Removal | Installation |
|---|---|---|---|---|
| 1 | Chain tensioner on cylinder bank 1 - 3 | 1 | Observe identification, tightening torque: 80 Nm (59 ftlb.) | |
| Wrench size 32 mm | ||||
| 2 | Sealing ring A27 x 32 | 1 | Always replace | |
| 3 | O-ring 18.77 x 1.78 | 1 | Replace | |
| 4 | Hexagon-head bolt M6 x 15 (10.9). | 4 | Tightening torque 14 Nm (10.5 ftlb.) | |
| 5 | Drive plate or driving plate for oil extraction pump | 1 | ||
| 6 | Sprocket wheel | 1 | The deeper recess on the sprocket wheel must face the camshaft | |
| 7 | Pan-head screw with captive washer M6 x 95 | 3 | Tightening torque 10 Nm (7.5 ftlb.) | |
| 8 | Tensioning element | 1 | Relieve tensioning element with the special tool, tensioning screw 9632, before removal of the camshafts. Inspect guide rails for scoring and replace if necessary | Observe identification; remove tensioning screw 9632 only after the camshafts or fastening element has been fastened on the cylinder head |
| 9 | Inlet camshaft of cylinder bank 1 - 3 | 1 | Identification 221.55/3.4 IN 13 | |
| 10 | Exhaust camshaft of cylinder bank 1 - 3 | 1 | Identification 222.55/3.4 EX 13 | |
| 11 | Timing chain | 1 | Observe allocation to the camshafts; two chain links identified. | |
| 12 | Fastening screw for guide rail | 2 | Tightening torque 10 Nm (7.5 ftlb.) | |
| 13 | O-ring | 2 | Replace; grease lightly | |
| 14 | Guide rail | 1 | Inspect for scoring and replace if necessary | Observe installation position; slot faces the crankshaft |
| 15 | Fastening screw for tensioning rail | 1 | Tightening torque 10 Nm (7.5 ftlb.) | |
| 16 | O-ring | 1 | Replace; grease lightly | |
| 17 | Tensioning rail | 1 | Inspect for scoring and replace if necessary | |
| 18 | Chain tensioner on cylinder bank 4 - 6 | 1 | Tigtening torque: 80 Nm (59 ftlb.) Wrench size 32 mm | |
| 19 | Sealing ring A27 x 32 | 1 | Always replace | |
| 20 | O-ring | 1 | Replace | |
| 21 | Hexagon-head bolt M6 x 15 (10.9) | 4 | Tightening torque 14 Nm (10.5 ftlb.) | |
| 22 | Drive plate Driving plate for oil extraction pump | 1 | ||
| 23 | Sprocket wheel | 1 | The deeper recess on the sprocket wheel must face the camshaft | |
| 24 | Pan-head screw M6 x 95 | 3 | Tightening torque 10 Nm (7.5 ftlb.) | |
| 25 | Tensioning element | 1 | Relieve tensioning element with special tool, tensioning screw 9632, before removal of the camshafts. Check guide rails for scoring and replace if necessary | Observe identification; remove tensioning screw 9632 only after the camshafts or fastening element has been fastened on the cylinder head |
| 26 | Inlet camshaft of cylinder bank 4 - 6 | 1 | Identification 216.55/3.4 IN 46 | |
| 27 | Exhaust camshaft of cylinder bank 4 - 6 | 1 | Identification 218.55/3.4 EX 46 | |
| 28 | Timing chain | 1 | Observe allocation to the camshafts; two chain links identified | |
| 29 | Fastening screw | 1 | ||
| 30 | O-ring | 1 | Replace; grease lightly | |
| 31 | Tensioning rail | 1 | Inspect for scoring and replace if necessary | |
| 32 | Fastening screw | 2 | Tightening torque 10 Nm (7.5 ftlb.) | |
| 33 | O-ring | 2 | Replace; grease lightly | |
| 34 | Guide rail | 1 | Inspect for scoring and replace if necessary | Observe installation position; slot faces the crankshaft |