Piper SEMINOLE PA-44-180, Maintenance Manual

Page: 716 / 881

CLUSTER MOUNTED INSTRUMENTS.
REMOVAL AND REPLACEMENT OF CLUSTER MOUNTED INSTRUMENTS.
1. Remove the face panel by springing the plastic material from the channels.
2. With the face panel held in a vertical position the screws securing the clusters are accessible. Remove the
screws and the lens of the cluster to be repaired.
3. Remove the plastic light seals adjacent to the instrument to be replaced.
4. Remove the wires or tube to the instrument. Tag wires so they can be returned to the same terminal during
the replacement of the instrument.
5. Remove the nuts and insulating washers on electrical instruments, then move instrument aft. Mechanical
instruments have only one large nut and lock washer.
6. Replace instrument in the reverse order of removal. Check all mountings and connections for security.
REMOVAL AND REPLACEMENT OF CLUSTER MOUNTED INSTRUMENTS.
(PA-44-180 S/N 44-95001 and up.)
1. Remove the four screws on the panel which will be holding the cluster to the panel.
2. Label the wires to facilitate reinstallation.
3. Remove the clear lens cluster cover.
4 Remove the nuts and washers from the terminals of the gauge to be replaced.
5. Remove the gauge through the front of the cluster housing.
6. Replace instrument in the reverse order.
7. Check all connections for security and correctness.
POWER.
MANIFOLD PRESSURE GAUGE.
The manifold pressure gauge is a vapor proof, absolute pressure type instrument. Pressure from the intake
manifold of each engine is transmitted to the instrument through individual lines. There are two in line filters
which are located in the lines ahead of each instrument. They are accessible from underneath the instrument
panel and should be checked for moisture and/or replaced at each 100 hour or annual inspection. Also connected
to the back of the gauge are quick drains to permit draining of any fuel or liquid that might accumulate in the
lines.
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
7 7 - 11 - 0 1
Page 77-03
Revised: May 15, 1989
3H5
PIPER AIRCRAFT