G420E/G424E Tier LP Engine Test And Adjustments 77
9. Tighten the four mounting bolts hand tight using a
crossing pattern from one side of the adapter to
the other. This prevents the adapter O-ring from
misaligning against the throttle, which may cut the
O-ring and cause an intake leak. Finally, tighten
the four throttle adapter fasteners to the specified
torque values.
10. Install the TMAP sensor mounting-bracket to the
manifold adapter. Apply a small amount of
vacuum grease to the TMAP sensor O-ring and
install the sensor into the manifold adapter, tighten
the fasteners to specified torque values.
NOTE
Be careful not to over tighten the sensor
retaining screw or damage to the sensor
housing may result.
11. Place mixer intake gasket on top of the mixer
(Figure M20), then place the air horn adapter on
top of the mixer with the intake tube facing the
valve cover (air cleaner side of the engine).
Tighten the air horn retaining bolts to specified
torque values.
Figure M20
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