Weichai America Corp.
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2.
Pull the cylinder head up vertically to take it down. If the cylinder head gasket is attached on
the removed cylinder head, remove it and place it back on engine block. Put the removed
cylinder head on cardboard to prevent damage to the upper surface of the combustion
chamber and other sealing surfaces. If more than one cylinder head needs to be disassembled,
mark the cylinder number on the head for reference.
3.
Remove the cylinder head gasket. If more than one cylinder head gasket needs to be
disassembled, mark the cylinder number on the gaskets for reference.
4.
Remove the intake and exhaust valve module. Refer to disassembly of valve mechanism for
details
5.
Remove the valve seal. Valve seals can’t be reused.
2.9.3 Cylinder Heads Assembly Procedure
1.
Insert the seal valve into the valve guide pipe.
2.
Install the intake valve and exhaust valve onto the cylinder head.
3.
Install new cylinder head gaskets. Cylinder head gaskets can not be reused.
4.
Assemble the cylinder head to the engine block.
5.
Thread the cylinder head bolts into the cylinder head.
6.
Tighten the cylinder head bolts
2.9.4 Inspection and maintenance of cylinder head
Key point 1:
Assembling
1. Refer to Figure 2-17 for the bolt pre-tightening and tightening order for each individual
cylinder head. The cylinder heads should be tightened in the order 3-4-5-2-1-6.
