Removal and inspection
1. Before removing the rocker arm assembly and their shafts, using a special tool (09246- 32000), check that the automatic lash adjuster has not fallen out.
Warning. Lay out the rocker arms and automatic lash adjusters in order of cylinder numbering, with intake and exhaust rockers clearly separated to prevent confusion.
Automatic gap adjuster
2. Check the ease of movement of the automatic lash adjuster by inserting a thin wire through the air outlet hole in the rocker and lightly pressing the lash adjuster ball.
Rocker arms
3. Check rocker arms for wear and damage. Replace if necessary.
4. Check the cleanliness of the oil holes.
Rocker shaft
5. Check for wear and damage on the mounting part of the rocker shaft. Replace if necessary.
6. Check the cleanliness of the oil holes.
Installation
Automatic gap adjuster
1. Immerse the automatic lash adjuster in clean diesel fuel.
2. Using a thin wire, lightly press down on the ball, then move the plunger up and down 4 or 5 times to release air.
3. Insert the automatic lash adjuster from below as shown in the figure, being careful not to spill the diesel fuel in it.
Rocker arms
Check the identification marks and install them correctly.
Rocker shaft
Insert the rocker shaft into the front bearing cap so that the notch made on its end faces upwards, and insert the set bolt without tightening it.
Bearing cap
Covers 2, 3 and 4 have the same shape, so when installing them, you need to check their numbers (put on them).
Valve cover
When installing the valve cover, apply sealing material to the semi-cylindrical seal and the top surface of the cylinder head.
- Sealing material: Valve cover - «Three Bond No. 10» or equivalent
Warning. Make sure the valve cover bolts are tightened to the correct torque. Tightening the bolts may cause the cover to deform or oil leak.
- Tightening torque: Valve cover bolts - 5-7 Nm.