MECHANICAL(H4DOTC DIESEL) > Cylinder Head
1. Be sure to perform cylinder head gasket selection when the following work has been performed.
• Cylinder block replacement
• Crankshaft replacement
• Connecting rod replacement
• Piston replacement
• Crankshaft bearing replacement
• Connecting rod bearing replacement
NOTE:
2. Apply liquid gasket to both sides of the cylinder head gasket as shown in the figure.
CAUTION:
• Do not apply liquid gasket excessively. If too much is applied, remove any liquid gasket that is squeezed out.
• Even if cylinder head gasket selection of procedure 1) is not required, always use new gaskets of the same rank as that used before removal.
NOTE:
Install within 5 min. after applying liquid gasket.
Liquid gasket:
THREE BOND 1217G (Part No. 0877Y0100) or equivalent
Liquid gasket applying diameter:
3.5±1.0 mm (0.1378±0.0394 in)
• LH side
• RH side
3. Attach the cylinder head gasket.
NOTE:
Check that liquid gasket is squeezed out from the cylinder head gasket.
4. Attach the cylinder head to the cylinder block.
CAUTION:
Be careful not to scratch the mating surface of cylinder head and cylinder block.
5. Tighten the cylinder head bolts.
(1) Apply a thin coat of engine oil to washers and cylinder head bolt threads.
(2) Tighten the cylinder head bolts with a torque of 60 N·m (6.1 kgf-m, 44.3 ft-lb) in the numerical sequence as shown in the figure.
(3) Loosen all bolts in the reverse order of step (2).
(4) Tighten the cylinder head bolts with a torque of 20 N·m (2.0 kgf-m, 14.8 ft-lb) in the numerical sequence as shown in the figure.
(5) Retighten the cylinder head bolts with a torque of 60 N·m (6.1 kgf-m, 44.3 ft-lb) in the numerical sequence as shown in the figure.
(6) Tighten the bolts in numerical order as shown in the figure by 90°.
(7) Retighten the bolts in numerical order as shown in the figure by 90°.
CAUTION:
The tightening angle of the bolt should not exceed 90°.
• LH side
• RH side
6. Attach the flange bolts indicated in the figure to the cylinder head.
Tightening torque:
LH side
18 N·m (1.8 kgf-m, 13.3 ft-lb)
RH side
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
• LH side
• RH side
7. Attach the return pipe and water pipe fixture bolts to the rear and bottom of cylinder head (LH). 