GENERAL.
POWER.
MANIFOLD PRESSURE GAUGE.
The manifold pressure gauge is a vapor proof, absolute pressure type instrument. Pressure from the intake
manifold of the engine is transmitted to the instrument through a line. A pointer indicates the manifold
pressure available at the engine in inches of mercury.
CHART 7701. TROUBLESHOOTING (MANIFOLD PRESSURE INDICATOR)
Trouble Cause Remedy
Excessive error at existing Pointer shifted. Replace instruments.
barometric pressure.
Excessive error when en- Line leaking. Tighten line connections.
gine is running.
Sluggish or jerky pointer Defective instrument. Replace instrument.
movement.
Dull or discolored mark- Age. Replace instrument.
ing.
Incorrect reading. Moisture or oil in line. Disconnect lines and blow
out.
77-10-01
Page 77-01
December 1, 1978
3F18
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
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