Lycoming YO-233-B2A - Cleaning Procedures; Unscheduled Maintenance

TEO-540-A1A Engine Maintenance Manual
Table of Contents © 2021 Avco Corporation. All Rights Reserved
Page vi February 2021
YO-233-B2A Engine Maintenance Manual
Subject Page
Cleaning ......................................................................................................................... 05-30
— Cleaning Guidelines ................................................................................................................ 33
— Table 1 - Cleaning Guidelines for Engine Components .................................................... 34
— Grit-Blasting............................................................................................................................ 35
— Soft Carbon Removal .............................................................................................................. 36
— Hard Carbon Removal ............................................................................................................ 37
— Cylinder Cleaning ................................................................................................................... 37
— Piston Cleaning ....................................................................................................................... 38
— Steel, Aluminum, or Magnesium Parts Cleaning .................................................................... 39
— Spark Plug Cleaning................................................................................................................ 39
— Lead Deposit Removal ............................................................................................................ 40
— Volcanic Ash Removal ........................................................................................................... 40
— Cleaning Guidelines for a Soaked Engine .............................................................................. 40
— Cleaning Methods for Non-Destructive Testing ..................................................................... 41
Time Limits / Maintenance Checks – Unscheduled Maintenance ............................ 05-50
— Lightning Strike - After a lightning strike .............................................................................. 43
— Engine Overspeed ................................................................................................................... 43
— Table 1 - Overspeed Values for YO-233-B2A Engines .................................................... 44
— Incorrect Fuel or Fuel Contamination ..................................................................................... 45
— Soaked Engine......................................................................................................................... 46
— Engine on Fire or Near a Fire .................................................................................................. 47
— Hydraulic Lock ....................................................................................................................... 47
— Volcanic Ash/Particulate Contamination ................................................................................ 47
— Table 2 - Action to Take in Volcanic Ash Conditions ....................................................... 48
— Valve Sticking ......................................................................................................................... 49
— Oil Starvation/Sudden Loss of Oil Pressure ........................................................................... 50
— Metal Contamination of the Lubrication System .................................................................... 51
— Propeller Strike, Sudden Engine Stoppage or Loss of a Propeller Blade TipCh_12_10 ........ 51
— Non-Destructive Testing
(Magnetic Particle Inspection and Fluorescent Penetrant Inspection.) ................................... 58