CESSNA F-172 H — Wiring Diagram

This document is a service letter from Thielert Aircraft Engines GmbH, specifically addressing the adaptation of the electrical system in Cessna 172 aircraft during engine exchanges after 1500 hours of operation. It details the necessary modifications to the engine wiring harness when installing the CENTURION 2.0 engine. The document is intended for maintenance organizations authorized by TAE GmbH and provides step-by-step instructions for the modifications required to ensure compliance with the new wiring standards. It includes technical specifications, part numbers, and safety precautions that must be followed during the installation process.

• Disconnect all batteries before starting work.
• The engine loom P/N 05-7150-E0014xx will be replaced with P/N 05-7150-E0023xx.
• Follow specific torque values: 1 Nm for suppressor board, 2.3 Nm for circuit breakers, and 2.7 Nm for other connections.
• Modifications must be performed by authorized maintenance organizations only.
• The document includes part numbers for all components involved in the modification.