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Cylinder Head Replacement - Left Tools Required J 36660-A Electronic Torque Angle Meter Removal Procedure View Full Image Disconnect the negative battery cable. Drain the cooling. Remove the engine cooling fan assembly. Remove the drive belt. Loosen the nut holding the power steering pump rear bracket to the side of the engine. Remove the nut holding the power steering pump rear bracket to the front of the engine Remove the three bolts and the nut holding the power steering pump mounting bracket to the engine. With the power steering pump and the A/C compressor still attached, slide the power steering pump mount bracket off of the stud and set aside. View Full Image Remove the power steering pump mounting bracket stud from the cylinder head. Remove the lower intake manifold. Remove the exhaust manifold. View Full Image Remove the spark plug wire harness and the spark plug wire support. Remove the valve pushrods. View Full Image Remove the ground wire bolt and the ground wire from the rear of the cylinder head. Secure the ground wire out of the way. Remove the bolt holding the fuel pipe bracket to the rear of the cylinder head. View Full Image Remove the engine coolant temperature sensor (if applicable). View Full Image Remove the engine coolant temperature gage sensor (if applicable). Remove the spark plugs. View Full Image Remove the cylinder head bolts. Notice: After removal, place the cylinder head on two wood blocks to prevent damage. View Full Image Remove the cylinder head. View Full Image Remove and discard the cylinder head gasket. View Full Image Remove the dowel pins (cylinder head locator) (if required). Clean the engine block and the cylinder head sealing surfaces. Notice: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components. Clean the cylinder head bolts and the engine block bolt holes. For further service to the cylinder head refer to the following: Refer to Cylinder Head Disassemble. Refer to Cylinder Head Cleaning and Inspection Refer to Valve Guide Reaming/Valve and Seat Grinding Refer to Cylinder Head Assemble Installation Procedure View Full Image Clean the cylinder head gasket surfaces on the engine block. Inspect the dowel pins (cylinder head locator) for proper installation. Clean the cylinder head gasket surfaces on the cylinder head. Important: Do not use any type sealer on the cylinder head gasket (unless specified). View Full Image Install the NEW cylinder head gasket in position over the dowel pins (cylinder head locator). View Full Image Install the cylinder head onto the engine block. Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket. View Full Image Apply sealant GM P/N 12346004 or equivalent to the threads of the cylinder head bolts. Install the cylinder head bolts finger tight. Notice: Refer to Fastener Notice in Service Precautions. View Full Image Tighten the cylinder head bolts in sequence on the first pass. Tighten the bolts in sequence on the first pass to 30 Nm (22 ft. lbs.). Use the J 36660-A in order to tighten the cylinder head bolts in sequence. Rotate the long bolts (1, 4, 5, 8, and 9) an additional 75 degrees. Rotate the medium bolts (12 and 13) an additional 65 degrees. Rotate the short bolts (2, 3, 6, 7, 10, and 11) an additional 55 degrees. Install the spark plugs. View Full Image If reusing the engine coolant temperature gauge sensor (if applicable), apply sealant GM P/N 12346004 or equivalent to the threads of the engine coolant temperature gauge sensor. Install the engine coolant temperature gauge sensor (if applicable). Tighten the engine coolant temperature gauge sensor to 20 Nm (15 ft. lbs.). View Full Image If reusing the engine coolant temperature sensor (if applicable), apply sealant GM PIN 12346004 or equivalent to the threads of the engine coolant temperature gauge sensor. Install the engine coolant temperature sensor (if applicable). Tighten the engine coolant temperature sensor to 20 Nm (15 ft. lbs.). View Full Image Install the valve pushrods. Install the lower intake manifold. Install the exhaust manifold. Install the spark plug wire harness and spark plug wire support. Tighten the support bolts to 12 Nm (106 inch lbs.). View Full Image Install the bolt for and the fuel pipe bracket to the rear of the cylinder head. Tighten the fuel pipe bracket bolt to 30 Nm (22 ft. lbs.). Install the ground wire and the ground wire bolt to the rear of the cylinder head. Tighten the ground wire bolt to 35 Nm (26 ft. lbs.). View Full Image Install the stud for the power steering pump mounting bracket to the cylinder head. Tighten the power steering pump mounting bracket stud to 20 Nm (15 ft. lbs.). View Full Image Slide the power steering pump mounting bracket with the power steering pump and the A/C compressor on the stud. Position the power steering pump rear bracket on the studs. Install the power steering pump mounting bracket three bolts and the nut. Install the nut for the power steering pump rear bracket to the front of the engine. Tighten the power steering pump mounting bracket and the power steering pump rear bracket bolts and the nuts to 41 Nm (30 ft. lbs.). Install the drive belt. Install the engine cooling fan assembly. Fill the cooling system. Connect the negative battery cable.

 

Cylinder Head Replacement (Right) Notes

Cylinder Head Replacement - Right Tools Required J 36660-A Electronic Torque Angle Meter Removal Procedure View Full Image Disconnect the negative battery cable. Drain the cooling system. Remove the engine cooling fan assembly. Remove the generator mounting bracket. Remove the generator mounting bracket stud from the cylinder head. Remove the lower intake manifold. Remove the exhaust manifold. Remove the oil level indicator and tube. View Full Image Remove the spark plug wire harness and spark plug wire support. View Full Image Remove the bolt and the ground strap from the rear of the cylinder head. View Full Image Remove the bolt and the ground wires from the rear of the cylinder head. Secure the ground strap and the ground wires out of the way. Remove the valve pushrods. View Full Image Remove the spark plugs. View Full Image Remove the cylinder head bolts. Notice: After removal, place the cylinder head on two wood blocks to prevent damage. View Full Image Remove the cylinder head. View Full Image Remove and discard the cylinder head gasket. View Full Image Remove the dowel pins (cylinder head locator) (if required). Clean the engine block and the cylinder head sealing surfaces. Notice: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components. Clean the cylinder head bolts and the engine block bolt holes. For further service to the cylinder head refer to the following: Refer to Cylinder Head Disassemble Refer to Cylinder Head Cleaning and Inspection Refer to Valve Guide Reaming/Valve and Seat Grinding Refer to Cylinder Head Assemble Installation Procedure View Full Image Clean the cylinder head gasket surfaces on the engine block. Inspect the dowel pins (cylinder head locator) for proper installation. Clean the cylinder head gasket surfaces on the cylinder head. Important: Do not use any type sealer on the cylinder head gasket (unless specified). View Full Image Install the NEW cylinder head gasket in position over the dowel pins (cylinder head locator). View Full Image Install the cylinder head onto the engine block. Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket. View Full Image Apply sealant GM P/N 12346004 or equivalent to the threads of the cylinder head bolts. Notice: Refer to Fastener Notice in Service Precautions. Install the cylinder head bolts finger tight. View Full Image Tighten the cylinder head bolts in sequence on the first pass. Tighten the bolts in sequence on the first pass to 30 Nm (22 ft. lbs.). Use the J 36660-A in order to tighten the cylinder head bolts in sequence on the final pass. Rotate the long bolts (1, 4, 5, 8, and 9) an additional 75 degrees. Rotate the medium bolts (12 and 13) an additional 65 degrees. Rotate the short bolts (2, 3, 6, 7, 10, and 11 an additional 55 degrees. Install the valve pushrods. Install the lower intake manifold. View Full Image Install the spark plug wire harness and the spark plug wire support and bolts, Tighten only the rear spark plug wire support bolt to 12 Nm (106 inch lbs.). Remove the front spark plug wire support bolt. The front spark plug wire support bolt is used to fasten the oil level indicator tube, and will be installed within the oil level indicator tube installation procedure. Install the spark plugs. Install the oil level indicator tube and indicator. Install the exhaust manifold. View Full Image Install the bolt and the ground wires to the rear of the cylinder head. Tighten the ground wire bolt to 35 Nm (26 ft. lbs.). View Full Image Install the bolt and the ground strap to the rear of the cylinder head. Tighten the ground strap bolt to 35 Nm (26 ft. lbs.). View Full Image Install the stud for the generator mounting bracket. Tighten the generator mounting bracket stud to 20 Nm (15 ft. lbs.). Install the generator mounting bracket. Install the engine cooling fan assembly. Fill the cooling system. Connect the negative battery cable.

 

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