Cylinder Head Torque Values & Sequence

CAUTION:
^ When installing sliding parts such as rocker arms, camshaft and oil seal, be sure to apply new engine oil on their sliding surfaces.
^ When tightening cylinder head bolts and rocker shaft bolts, apply new engine oil to thread portions and seat surfaces of bolts.





1. Set No. 1 piston at TDC on its compression stroke as follows:
a. Align crankshaft sprocket aligning mark with mark on oil pump body.
b. Confirm that knock pin on camshaft is set at the top.








2. Apply sealant to both drain plug threads and install.





3. Install exhaust manifolds to cylinder head.





4. Install cylinder head with new gasket.

NOTE:
^ Be sure to install washers between bolts and cylinder head.
^ Do not rotate crankshaft and camshaft separately, or valves will hit piston heads.





5. Tighten cylinder head bolts in numerical order using angle wrench ST10120000, J24239-01 or equivalent, using the following tightening procedure:

NOTE:
^ Apply engine oil to threads and seating surfaces of cylinder head bolts before installing them.
^ Cylinder head bolts for positions 4, 7, 9 and 12 are longer than the others. Bolts of length "L1" are 127 mm (5.00 inch) for the positions 4, 7, 9 and 12 and length "L2" are 106 mm (4.17 inch) for the remaining positions.

(1). Tighten cylinder head bolts to 29 Nm (22 ft. lbs.).
(2). Tighten cylinder head bolts to 59 Nm (43 ft. lbs.).
(3). Loosen cylinder head bolts completely.
(4). Tighten cylinder head bolts to 10 Nm (89 in. lbs.).





(5). Tighten intake manifold bolts and nuts to 4 Nm (36 in. lbs.).
(6). Tighten intake manifold bolts and nuts to 18 Nm (13 ft. lbs.).
(7). Tighten intake manifold bolts and nuts to 16 - 20 Nm (12 - 14 ft. lbs.)
(8). Loosen intake manifold bolts and nuts completely.
(9). Tighten cylinder head bolts to 29 Nm (22 ft. lbs.).
(10). Turn cylinder head bolts to 60 to 65 degrees clockwise. If an angle wrench is not available, tighten cylinder head bolts to 54 - 64 Nm (40 - 47 ft. lbs.).
(11). Tighten cylinder head sub-bolts to 9.0 - 11.8 Nm (80 - 105 in. lbs.).
(12). Tighten intake manifold bolts and nuts to 4 Nm (36 in. lbs.).
(13). Tighten intake manifold bolts and nuts to 9 Nm (80 in. lbs.).
(14). Tighten intake manifold bolts and nuts to 8 - 10 Nm (71 - 89 in. lbs.).

Rocker Arm Cover Assembly Sequence:

6. Install both rocker covers.





7. Install compressor and alternator bracket.
8. Install alternator.
9. Install compressor and power steering pump.
10. Install exhaust front tube to exhaust manifold.

Fig. 9 Camshaft Pulley Identification:

11. Install rear belt cover and camshaft sprocket.

NOTE: RH camshaft sprocket and LH camshaft sprocket are different parts. Be sure to install them in the correct location. The RH sprocket has an identification mark "R3" where theta is 0� 53' and the LH camshaft sprocket is marked "L3" where theta is -3� 27'.

12. Install timing belt and adjust belt tension.








13. Install distributor by aligning mark on shaft with protruding mark on housing. After installing, confirm that distributor rotor head is set as shown (see image).
14. Install intake manifold. Install all parts which were removed in step 9 under Cylinder Head Assembly.

NOTE:
^ If only intake manifold is removed and to be used again, install it using the following tightening sequence:
1. Tighten all bolts and nuts to 4 Nm (36 in. lbs.).
2. Tighten all bolts and nuts to 9 Nm (80 in. lbs.).
3. Tighten all bolts and nuts to 8 - 10 Nm (71 - 89 in. lbs.).
^ If replacing intake manifold with a new one, cylinder head gasket must also be replaced with a new one. Refer to step 4.

15. Install injector fuel tube assembly.





16. Connect all injector harness connectors.
17. Install fuel feed and fuel return hoses to injector fuel tube assembly.
18. Install intake manifold collector. Install all parts which were removed in step 5 under Cylinder Head Assembly.
19. Install ASCD and accelerator control wire.





20. Check hydraulic valve lifter.
a. Push plunger forcefully with your finger. Be sure to check it with rocker arm in its free position (not on the lobe).
b. If valve lifter moves more than 1 mm (0.04 inch), air may be inside it.
c. Bleed air off by running engine at 1,000 RPM under no load for about 10 minutes.
d. If hydraulic valve lifters are still noisy, replace them and bleed air off again in the same manner as in step 20 (c).