IHI NIIGATA MG(L)26HLX, Инструкция по эксплуатации

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SECTION
４
- DISASSEMBLY AND REASSEMBLY
4.1 CYLINDER HEAD AND VALVE MECHANISM
４－１－０８
4.1.11 Starting Air Valves
The starting air valves (if equipped) are used only with the air-over-piston
starting arrangement. The valves are mounted on the cylinder head and
supplied with sequenced blasts of pressurized air that essentially "motor" the
engine until combustion occurs. The sequenced air is supplied by a camshaft
driven distributor mounted externally at the rear of the camshaft.
If starting air valves are not used (in the case of air-motor starting), the
openings in the cylinder head are plugged.
To remove the starting valves, disconnect the air line to the valve, remove
bolts
①
, and lift the valve from the cylinder head. To disassemble the
valve, remove the cover
②
.
CAUTOIN
When disassembling the spring section during the course of overhaul
inspection, parts are caused to jump out due to disengagement of
disassembly tools.
Thus, there is a danger of injuries.
Familiarize yourselves with the construction of component and use tools
properly. Also give care full attention to the jumping direction of parts so that
the body will be kept away from the jumping direction.
Inspect the valve and valve body
③
and
④
for
damage or scratches. If necessary, lap the surfaces to insure smoothness.
Coat the valve and the valve bore in the body with oil, and reassemble using a
new copper gasket underneath the cover. Torque the bolts
①
to fixed torque
(Refer Tightening Torque Table).