Engine International VT365. Manual - part 22
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
85
Figure 105 Set up for intake manifold pressure
test
1.
Test plate
2.
Intake Manifold Pressure Test Plug
3.
Intake Manifold Pressure Test Cap
4.
Air supply pressure regulator
2.
Install Intake Manifold Pressure Test Plug (Table
9) in EGR orifice.
3.
Install Intake Manifold Pressure Test Cap(Table 9)
on air intake.
WARNING: To prevent personal injury or
death, wear safety glasses with side shields to
protect eyes. Limit compressed air pressure to
207 kPa (30 psi).
4.
Submerge intake manifold assembly in water.
5.
Use a regulated filtered air supply and pressurize
to 172 to 207 kPa (25 to 30 psi). Inspect for leaks
in the intake plenum, EGR, and coolant passages.
Replace intake manifold, if necessary.
6.
Inspect intake manifold gasket seal beads for
defects. Replace gasket, if necessary.
Exhaust Gas Recirculation (EGR) Cooler
Figure 106 EGR cooler with pressure test plates
installed
1.
Air pressure regulator assembly
2.
EGR cooler test plates
3.
Cooler assembly
1.
Install EGR cooler test plates (Table 9) to each
end of the EGR cooler assembly.
WARNING: To prevent personal injury or
death, wear safety glasses with side shields.
Limit compressed air pressure to 207 kPa (30 psi).
2.
Attach an air pressure regulator to the EGR
cooler. Connect to shop air supply and adjust air
pressure to approximately 172 to 207 kPa (25 to
30 psi).
3.
Completely submerge EGR cooler in sink or large
container of water. Inspect for air bubbles coming
from coolant passages.
4.
Reinstall EGR cooler assembly, if leaks are not
detected. If leaks are detected, install new cooler
assembly.