Remove and Install Camshaft

REMOVING CAMSHAFTS







Valve Timing
1. Camshaft 248°
2. Plug for oil bore in camshaft
3. Lockwasher
4. Dowel pin
5. Sprocket intake "E"
6. Sprocket- exhaust "A"
7. Lockplate
8. Hexagon head screw M 6 x 16
9. Adapter for distributor rotor
10. Intake valve - 37 mm (1.457") dia. Oversize valves with larger stem diameters are available
11. Exhaust valve - 32 mm (1.260") dia. Oversize valves with larger stem diameters are available
12. Spring retainer, lower
13. Valve spring, outside - 41 mm (1.614") long
14. Valve spring, inside - 38.5 mm (1.516") long
15. Valve stem seal
16. Valve spring retainer, upper
17. Valvecollet
18. Tappet
19. Shims from 3.00 to 4.25 mm (0.118 to 0.167")






- Remove cylinder head cover.
- Unscrew bolts (1...3) and take off distributor cap.






- Unscrew distributor rotor (4).
- Unscrew adapter (5).

Installation Note: Tightening torque: 23 + 1 Nm (16.5 + 0.5 ft lbs).






- Unscrew and remove distributor housing, and plugs.

Installation Note: Check O-rings, replacing it necessary.






- Remove end cover.

Installation Note:
- Replace gasket.
- Use longer bolts in bores with a dowel sleeve (1).






- Unscrew guide rail.






Installation Note: Center guide rail with a feeler gage.






- Turn crankshaft with Special Tool 11 3 020 to position cylinder no. 1 to TDC - cylinder no. 4 overlaps.

CAUTION: Never crank the engine after removing the timing chain.






- Remove chain tensioner, Remove and Install Chain Tensioner Piston.
- Open lockplates and unscrew sprockets.

Installation Note: Tightening torque: 9 + 1 Nm (6.5 + 0.5 ft. lbs.).







- Mount Special Tool 11 3 010 on timing case.
- Turn shaft (1) up to the arrest - camshaft is held down for removal of bearing caps.
- Unscrew camshaft bearing caps.







- Loosen the arrest and relax the camshaft. Remove Special Tool 11 3 010. Mark camshafts "E" (intake), or "A" (exhaust) and remove.

INSTALLATION

NOTE:
Camshafts are identical for exhaust and intake sides.
Install a used camshaft in the same position.






- Turn crankshaft to TDC.
- Install camshaft that one each groove faces up and inward - TDC position.






- Mount Special Tool 11 3 010 on timing case.
- Hold camshaft in TDC position with Special Tool 11 3 020 and turn shaft (1) up to the arrest - camshaft is held down for installation of bearing caps.






- Install camshaft bearing caps on timing case according to lettering.
Tightening torque: 22 + 2 Nm (16 + 1.5 ft. lbs.).






- Tighten the timing chain in opposite direction of engine rotation and mount on the intake side sprocket"E" first.
- Install lockplate and bolt down the sprocket,
Tightening torque: 9 + 1 Nm (6.5 + 0.5 ft. lbs.).






- Install exhaust side sprocket "A".
- Install adapter (1).
- Install Lockplate and bolt down the sprocket.
Tightening torque: 9 + 1 Nm (6.5 + 0.5 ft. lbs.).






- Install chain tensioner, Remove and Install Chain Tensioner Piston.
- Turn engine once in direction of rotation and recheck the timing.
- Make sure that:
- Crankshaft at TDC
- One each camshaft groove faces in
- One each camshaft groove faces cast boss on bearing cap






- Lock sprocket mounting bolts with a lockplate.
- Adjust valve clearance,Valve Clearance.






Cam distance "N"
Nominal value: 43.713 mm (1.721").