Teledyne Continental Motors, Inc.
TM
Non-Overhaul Removal and Replacement
IOF-550 Permold Series Engine Maintenance Manual
10-23
1 April 2007
10-5.1. EGT Sensor and Lead Wire Replacement
Equipment Required:
•
Crimping tool
•
EGT Sensor/Wire Splice Kit
•
Utility knife
•
Scissors
•
A variable intensity heat gun with a small tip
Prerequisites:
Before proceeding, review Sections 10-1, “Parts Replacement” and 10-5, “Engine Low
Voltage Harness Lead Wire Repair and Sensor Replacement.”
Procedure
WARNING
If power is not disconnected, a loose or broken wire could
allow the engine to start and the propeller to rotate. Do not
stand or place equipment within the arc of the propeller.
1.
Disconnect electrical power to the engine; turn the Ignition Switch OFF.
CAUTION: Failure to use the correct splice kit for sensors or lead
wires will result in abnormal engine operation and may cause
engine damage.
2.
Inventory the EGT Sensor/Wire Splice kit according to the parts list.
NOTE: Refer to Figure 10-9. EGT wires are alumel (red) and
chromel (yellow). To maintain signal integrity, all segments of the
wire must be the same material. The EGT splice kit contains an
alumel (green band) pin and socket and a chromel (white) pin and
socket. Splices must be installed as directed for proper system
operation after repairs.
Yellow wire
Yellow wire
Red wire
Red wire
White pin
White socket
Green socket
Green pin
Yellow wire
Yellow wire
Red wire
Red wire
White pin
White socket
Green socket
Green pin
Figure 10-9.
EGT wire repair pins mated to wires
3.
Cut and remove all cable ties supporting the affected sensor or damaged wire section.
4.
Remove the faulty sensor or damaged wires.
