air bubbles cease to appear, an additional 5
cycles will insure gauge is completely filled with
fluid. Fig. 6179.
Fig. 6-1-78, F60181. Removing snubber from gauge
Removing Air From Fuel Pressure Gauge
1. Remove gauge from test stand.
snubber from gauge stem. Fig. 6-1-78.
2. Fill the gauge filling tube with gauge oil or
Fig. 6-1-79, F60182. Filling gauge to remove air bubbles
injector test oil and screw it into gauge stem.
Hold gauge In position so the 210 psi [1448 kPa]
3. Turn gauge so the stem Is in an up position and
graduation is the lowest point on dial face. While
remove gauge filling tube. Continue to hold
holding gauge in this manner, squeeze tube and
gauge stem upright and finish filling internally
release it. When tube is squeezed, gauge hand
threaded portion of gauge stem with fluid.
will be actuated indicating fuel is entering gauge.
Note: The gauge must be held with stem
When tube is released air bubbles will come up
In upright position until installation of
through fluid contained in tube indicating air
gauge on test stand.
inside gauge is being displaced by fluid Continue
to squeeze and release tube several times After