1. Turn the crankshaft so that the camshaft is positioned upward with the protrusion of the cam whose valve is to be adjusted.
2. Install the valve spring compressor (special tool) from the rocker arm guide side as shown in the figure, pull towards you, lower the valve spring plate down and use a magnetic pin to remove the rocker arm guide.
3. Slide and remove the rocker arm.
Note: If the rocker arm moves with difficulty, press on the valve spring retainer from the adjusting washer side, slide and remove the rocker arm.
4. Remove the adjusting washer and hydraulic valve lifter.
5. Screw the indicator onto the special stand.
6. Insert the stand with the indicator into the hole for the valve lifter, as shown in the figure.
7. Install a new rocker arm guide and set the indicator as shown in the figure, setting its reading to zero.
Note: When setting to zero, pull the indicator rod slightly to prevent the stand from wobbling.
8. Holding the rod (so that the rack does not wobble), move and install the indicator probe on the side of the adjusting washer, read the indication A on the scale.
9. Select the thickness of the adjusting washer based on the following calculation:
- -0.025 mm < A -T < 0.025 mm
The repair kit contains 17 washers of varying thickness from 2.800 mm to 3.200 mm with a step of 0.025 mm
After installing the adjusting washer, check with an indicator that its thickness satisfies the condition of point 9.
10. After selecting the appropriate adjusting washer, install the rocker arm in the following sequence:
1) Install the hydraulic valve lifter and the selected adjusting washer.
2) Using a valve spring compressor (special tool) lower the valve spring plate down from the guide side.
3) Install the rocker arm.
Note: If the rocker arm is difficult to install, lower the valve spring retainer from the rocker arm guide side and the adjusting washer side.
4) Install the rocker arm guide.