Installation steps of cylinder head and tightening torque of bolts

In principle, the cylinder head should be installed in the order of disassembly first and then assembly, and the following issues should be paid attention to during assembly:

Turn the crankshaft to the top dead center position of the first cylinder before installing the cylinder head.

When installing the cylinder head gasket, the marked side (accessory number) must be visible.

Replace the fastening bolts of the cylinder head, and do not reuse the bolts tightened according to the tightening torque.

04 Tighten the cylinder head bolts with a torque of 40Nm according to the sequence shown in the figure below, and then tighten them with a wrench 180.

Install timing toothed belt (adjusting valve timing) and valve cover.

Adjust the throttle zipper and add new coolant.

07 Perform throttle control unit matching.

08 query fault code. Unplugging the plug of the electronic components of the electronic control unit will cause fault storage. Check the fault code and delete it if necessary.

Pay attention to the tightening torque of main component bolts. Tighten the front exhaust pipe and exhaust manifold fastening bolts to 20nm, intake manifold bracket and engine fastening bolts to 20nm, and intake manifold bracket and intake manifold fastening bolts to 30nm.