Disassembly, Inspection, Repair, And Assembly Of Valve - Baudoulin 4M11G Maintenance Manual

Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
⑤ Apply clean lubricating oil to the push rods. Ensure that the push rod ends are sufficiently
lubricated.
⑥ Assemble the push rods and lightly insert the push rods into the tappets through the cylinder
head.

4.5.5 Disassembly, Inspection, Repair, and Assembly of Valve

4.5.5.1 Exploded View for Assembly of Valve
Valve collet
Inner valve spring
Valve stem seal
Intake valve
4.5.5.2 Valve DisassemblyProcedures
① Using the valve spring compressor or an overhead-valve spring pincer or another equivalent
tool, compress squarely the valve springs. Disassemble the valve collets. Disassemble the upper
retainers for the valve springs, and the inner and outer valve springs;
② Disassemble the valve from the valve seat.
4.5.5.3 Inspection and Maintenance of Valve
① Check whether the valve stem and valve stem end surface are worn;
② Check whether the valve cone is worn or damaged;
③ Check the valve cones and arc surfaces for presence of carbon deposit and sintering.
4.5.5.4 Valve Assembly Procedures
If the valve is worn or seriously carbon-deposited or has other bad phenomena, it is
required to change the used valve with a new one.
Figure 4-42 Exploded View for Assembly of Valve
Upper seat of valve spring
Outer valve spring
Lower seat of valve spring
Exhaust valve
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Cylinder head