Note: Thoroughly clean all parts to be assembled.
Before installing parts, apply engine oil to all mating surfaces.
Replace all gaskets and oil seals with new ones.
1. Install combustion chambers.
a) Align the combustion chamber pin with the cylinder head recess.
b) Using a plastic-tipped hammer, lightly tap the gaskets and combustion chambers into place.
c) Using a dial indicator, measure the distance the combustion chamber protrudes from the cylinder head (within ±0.03 mm).
If the measured distance is outside the specified limits, adjust it using shims.
- Gasket thickness: 0.03 mm
2. Install the valves.
a) Install the following parts:
- (1) oil seal,
- (2) valve,
- (3) spring seat,
- (4) valve spring,
- (5) spring plate.
b) Using the special tool, compress the valve spring and install two crackers on the valve stem.
c) Using a plastic-tipped hammer, lightly tap the end of the valve to ensure that the parts are aligned.
3. Install the tappets and adjusting washers. Check that the tappet rotates easily by hand.
4. Install the camshaft.
Recommendation: It should be remembered that different bearing shells are used for journal No.1 and the other journals.
a) Install ten bearing shells into the bearing caps and cylinder head.
b) Install the camshaft on the cylinder head with the keyway facing upward.
c) Install the five bearing caps into place.
d) Apply a thin coat of engine oil to the threads and heads of the bearing cap bolts.
(View the original source on the website ToyotaMan.ru)
d) Install and tighten the ten bearing cap bolts evenly, in several passes, in the sequence shown in the illustration.
- Tightening torque - 25 Nm
5. Adjust the valve clearance.
Thermal clearance:
- inlet valve - 0.20 - 0.30 mm
- outlet valve - 0.40 - 0.50 mm
6. Install the new gasket and camshaft seal retainer. Tighten the four bolts.
- Tightening torque - 18 Nm
