Valve Clearance Adjustment — 1.6L LDE, LXV, 1.8L 2H0
Special Tools
For equivalent regional tools, refer to Special Tools .
Removal Procedure
- Remove the camshaft adjuster. Refer to Camshaft Position Actuator Adjuster Removal .
- Remove the timing belt rear cover. Refer to
Timing Belt Rear Cover Replacement : 1.6L LDE, LXV, 1.8L 2H0, LUW and LFH .
- Remove exhaust camshaft position sensor. Refer to
Camshaft Position Sensor Replacement : LDE, LXV, LUW, 2H0 and LFH .
- Remove inlet camshaft position sensor. Refer to
Camshaft Position Sensor Replacement : LDE, LXV, LUW, 2H0 and LFH .
- Remove the EN-6628-A locking tool.
Adjustment Procedure
- Inspect the 2 valve backlash, inlet valve cylinder 1.
1.1. | Turn the inlet camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 1 are in the test position. |
1.2. | Insert the EN-6361 gauge, inspect the valve clearance. |
Write down the result.
- Inspect the 2 valve backlash, inlet valve cylinder 3.
2.1. | Turn the inlet camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 3 are in the test position. |
2.2. | Insert the EN-6361 gauge, inspect the valve clearance. |
Write down the result.
- Inspect the 2 valve backlash, inlet valve cylinder 4.
3.1. | Turn the inlet camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 4 are in the test position. |
3.2. | Insert the EN-6361 gauge, inspect the valve clearance. |
Write down the result.
- Inspect the 2 valve backlash, inlet valve cylinder 2.
4.1. | Turn the inlet camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 2 are in the test position. |
4.2. | Insert the EN-6361 gauge, inspect the valve clearance. |
Write down the result.
- Inspect the 2 valve backlash, exhaust valve cylinder 4.
5.1. | Turn the exhaust camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 4 are in the test position. |
5.2. | Insert the EN-6361 gauge, inspect the valve clearance. |
Write down the result.
- Inspect the 2 valve backlash, exhaust valve cylinder 2.
6.1. | Turn the exhaust camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 2 are in the test position. |
6.2. | Insert the EN-6361 gauge, inspect the valve clearance. |
Write down the result.
- Inspect the 2 valve backlash, exhaust valve cylinder 1.
7.1. | Turn the exhaust camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 1 are in the test position. |
7.2. | Insert the EN-6361 gauge, inspect the valve clearance. |
Write down the result.
- Inspect the 2 valve backlash, exhaust valve cylinder 3.
8.1. | Turn the exhaust camshaft in the direction of engine rotation by the camshaft hexagon gear until the cams of cylinder 3 are in the test position. |
8.2. | Insert the EN-6361 gauge, inspect the valve clearance. |
Write down the result.
Note: Note the removal sequence 1-4.
- Remove the 4 camshaft bearing support bolts.
- Release the bearing support by striking it gently with a plastic hammer.
- Remove the 1st camshaft bearing support (1).
Note: Mark the exhaust camshaft bearing caps before removal.
- Loosen the 8 exhaust camshaft bearing cap bolts, working from outside to inside in a spiral in steps of 1/2 up to 1 turn.
- Remove the 8 exhaust camshaft bearing cap bolts.
- Remove the 4 exhaust camshaft bearing caps Numbers 6-9 from the cylinder head.
- Remove the exhaust camshaft (1).
Note: Mark the inlet camshaft bearing caps before removal.
- Loosen the 8 inlet camshaft bearing cap bolts, working from outside to inside in a spiral in steps of 1/2 up to 1 turn.
- Remove the 8 inlet camshaft bearing cap bolts.
- Remove the 4 inlet camshaft bearing caps Numbers 2-5 from the cylinder head.
- Remove the inlet camshaft (1).
- Using the EN-845 device (1), remove the 16 valve tappets.
- Example for determine valve tappet size.
21.1. | Measurement of the cup tappet installed 3.12 mm (0.123 in), identification number 12. |
21.2. | Measured value between cams and cup tappets +0.31 mm (0.012 in) = 3.43 mm (0.135 in). |
21.3. | Required value, intake valve clearance - 0.25 mm (0.010 in). |
| Note: The identification number, arrow, is on the inside of the valve tappet. |
21.4. | Measurement of the new cup tappet = 3.18 mm (0.125 in), identification number 18. |
21.5. | Use a valve tappet with this dimension or one that is nearest to it. |
- Refer to
Engine Mechanical Specifications : 1.8L 2H0 for the valve clearance values.
- Refer to Electronic Parts Catalogue for the valve tappets sizes.
Installation Procedure
Note: Observe the correct assignment.
Note: Coat the sliding surfaces with NEW engine oil.
- Install the 16 tappets (1), using the EN 845 suction device .
- Install the camshafts. Refer to
Camshaft Replacement : 1.6L LDE, LXV, and 1.8L 2H0 .
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