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Check and adjustment of backlashes of valves (release model 1998)
Valve clearance 1. Forward
2. The intake valves
3. The exhaust valves | 4. The front engine block
5. The rear cylinder block |
| PERFORMANCE ORDER | | 1. Disconnect the negative battery terminal. | | 2. Remove the valve cover. | | 3. Establish cylinder N1 piston to TDC at the time of the compression stroke. |  | 4. On models with 4-cylinder engine, set the cylinder N1 piston to TDC at the time of the compression stroke and measure the clearances specified valves.
| | 5. 6-cylinder engine, the piston N1 is in TDC position at the time of the compression stroke, measure the valve clearances, marked with the letter A, rotate the crankshaft 240 ?� clockwise and measure the valve clearances, marked with the letter B, and then turn the crank motor shaft another 240 ?� and measure the valve clearances, marked by the letter C (see. Fig. Clearances valves). |  | 6. Measure the clearance between the valve lift and cam camshaft using a set of shims - if the gap is correct, then the extraction of the probe must be felt friction. |  | 7. On models with the four-cylinder engine, the cylinder when the piston is at TDC N4 at the time of the compression stroke, exhaust valves measure clearances N2 and 4 and intake valves 4 and N3. | | 8. Adjust the valve clearance can be carried out by removing the gas distribution belt or remove it. |
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Operation adjustment with the removal of the timing belt | PERFORMANCE ORDER | | 1. Remove the timing belt and the camshafts. | | 2. Remove the washer from the valve lifts, requiring adjustment and measure their thickness. | | 3. Install new washers desired thickness, then set the camshafts and the bearing caps. Tighten the mounting bolts to the required torque. | | 4. Recheck the valve clearances. |
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Operation adjustment without removing the timing belt | PERFORMANCE ORDER | | 1. Rotate the crankshaft so that the cam on the valve adjustment is required has been raised up. | | 2. Turn the valve lift to the spark plug gap. At the 6-cylinder engine, remove the internal bearing cap bolts extreme camshaft (excluding large cap thrust bearings). In the 4-cylinder engine, remove the internal bearing cap bolts nearest to the adjustable valve. Replace the bearing cap strap with clip and secure it with the long bolts. Tighten the clamp by pulling down the lift of the valve, and remove the shim by using a small screwdriver and a magnet or tweezers. |  | 3. Measure the thickness of the washer using a micrometer.
Calculate the required thickness of a new washer according to the following formula: H = T + (G - R)
where T - the thickness of the old washers
W - valve clearance
H - thickness of a new washer
P - recommended valve clearance | | 4. Install a new washer, and recheck the valve clearance. |
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