Propeller Governor Ground Test; Pulse Generator Assembly Diagram - Piper PA-44-180 SEMINOLE Maintenance Manual

GROUND TEST.
The purpose of the following procedure is to make sure all circuits and the propeller governor solenoid coil
are functioning properly.
Before starting test, check that the B-4467-1 test box is being
used. Ensure that all system hardware and equipment, except
the computer, are installed and connected properly to the wiring
harness. Do not plug the computer in until the entire test has
been satisfactorily completed
1. Loosen the nose cone and tilt it forward to make access to the computer station 21.55 on the left side
of the aircraft.
2. Disconnect the main wiring harness from the computer and connect the test box in its place.
If the proper lights fail to illuminate, check the input voltage.
If necessary, use an auxiliary power source to obtain at least 12-
volts dc.
3. Place the master switch in the ON position. With at least 12 to 14 volts dc applied to the system, the
power and coil lights should illuminate.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
Figure 61-6. Pulse Generator Assembly
— NOTE —
— NOTE —
3D12
PPS-50041C
61-10-00
Page 61-10
Revised: May 15, 1985