CHAPTER 77
PAGE 8
MAINTENANCE MANUAL EXTRA 300SC
PAGE DATE: 1. August 2014
77-20-20 Exhaust Gas Temperature (EGT)
The exhaust gas temperature gauge is located in the instru-
ment panel. The temperature sensor is located on the rear
exhaust pipe on the right-hand side (refer to Figure 1). The
sensor is mounted with a clamp. When leaning the engine
using EGT gauge, follow the procedures of the engine
manufacturer (Lycoming Service Instruction No. 1094).
77-20-21 Exhaust Gas Temperature Gauge
Removal/Installation
Refer to Chapter 31.
77-20-22 EGT Sensor
The sensor is a type K thermocouple and is connected
directly with the overbraided wiring. This wiring cannot be
disconnected from the sensor and must not be shortened.
Removal/Installation
1 Remove cowling per Chapter 71.
2 Disconnect overbraided wires from instrument.
3 Note correct wiring.
4 Remove the worm drive hose clamp from the exhaust pipe
and remove sensor with complete overbraided wires.
5 Install in reverse sequence of removal. Make sure wires are
connected correctly.
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