Snorkel TB100J - Manual (Page 26)

4. GAUGES
1 4 - P/N 0112478
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FILTER MINDER
1
2
3
4
The air filter gauge (1) (FILTER MINDER) is
located just above the ground-control box. The
gauge measures the vacuum (air pressure)
between the intake manifold and the air filter. As
the filter clogs, the vacuum increases (pressure
drops). As the vacuum increases, the yellow
indicator (2) raises toward the red area (3) of the
sight glass. When the yellow indicator reaches
the red, it’s time to change the air filter.
The indicator (2) stays at its highest setting, it
does not go to the bottom of the sight glass
when the engine is turned off. After the filter is
changed, press the small RESET button (4) to
reset the indicator disk to the bottom of the sight
glass.
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TEMPERATURE
The TEMPERATURE gauge is located just
above the ground-control box. It shows the
temperature of the water-antifreeze mixture in
the engine block. The typical operating-
temperature range for a Continental engine is
180°F to 202°F (81°C to 94°C); for a Cummins
engine, 141
°F to 211°F (60°C - 100°C).
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AMPS
The AMPS gauge shows the electric current
from the alternator to the batteries. When the
engine is running, the needle in the AMPS gauge
should not be to the left of “0.” Under normal
operating conditions, after the engine has been
running for a few minutes, this gauge should
read “0.”
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HOURS
The HOURS gauge is basically an electric clock.
It accumulates time when:
BATTERY ........................ON
SELECTOR SWITCH.......GROUND
MASTER KEY SWITCH ...ON.
The HOURS gauge also accumulates time when:
4. GAUGES