Checking procedure
Remove the air filter.
Remove the EGR valve and unscrew the camshaft caps.
Remove the spark plug of the first cylinder. To do this, use a puller and a candle wrench.
Pic. 2.33. Installing the adapter and indicator
Screw the dial gauge adapter into the spark plug socket as far as it will go (pic. 2.33).
Insert the dial indicator with the extension until it stops and press it with the nut.
Scroll the crankshaft in the direction of engine rotation to the TDC of the first cylinder. Note the position of the small hand on the dial indicator.
Pic. 2.34. The position of the holes in the camshafts
The holes in the camshafts should be as shown in Figure 2.34. Rotate the crankshaft one more revolution if necessary (360°).
Note: If the crankshaft has been rotated beyond TDC by more than 0.01 mm, it should be turned again against the direction of engine rotation by about 45°. Finally, bring the crankshaft in the direction of engine rotation to the TDC of the first cylinder.
Permissible deviation from the TDC of the first cylinder is±0.01 mm.
Insert the camshaft retainer into the holes in the camshafts until it stops.
Pic. 2.35. Camshaft retainer
Locking pins 1 must fit into holes 2. Mark «TOP» 3 must be visible from above (pic. 2.35).
If the camshaft retainer does not enter the holes in the camshafts to the stop, then the cause is incorrect valve timing and must be adjusted.
The valve timing is correct if the camshaft retainer is inserted into the holes as far as it will go.
Further installation is carried out in the reverse order.
Replace the O-rings of the camshaft plugs and lubricate them with oil before installation.
Install the EGR valve.
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