Ref. New  Ref. Old  Chart  Nomenclature  Dimensions Mfr. Min. & Max. ns Serv. Max.  Clearances Mfr. Min. S & Max. Serv. Max.
 
840  956AZ  Front Crankshaft Spline Bushing and Alternator and Starter Shaft Gear -Spline Backlash  .001 .005  .006 
841  957  AZ  Propeller Shaft Drive Gear and Alternator and Starter Shaft Gear -Spline Backlash  .001 .004  .006 
842  960  AZ  Propeller Shaft Drive Gear and Driven Gear -Backlash  .008 .014  .016 
843  968  AZ  Starter Slip Coupling Gear and Starter Idler -Backlash  .0002 .0045  .0075 
844  969  AZ  Bendix Starter Motor Shaft Gear and Idler -Backlash  .0002 .0045  .0075 
845  999  AZ  Propeller Shaft Spline and Propeller Shaft Driven Gear -Spline Backlash  .008 .011  .015 
(When Measured At O.D. Of Propeller Gear)  .020 .028  .036 

SSP1776
TIO-541
(Accessory Drives)

2-19
SERVICE TABLE OF LIMITS

PART II INTEGRAL ACCESSORY DRIVE ENGINES
SECTION IV BACKLASH

OIL PUMP DRIVEN
SECTIONA-A VIEWD-D
(AccessoryDrives)
2-20
SERVICE TABLE OP LIMITS
PART II INTEGRAL ACCESSORY DRIVE ENGINES SECTION V SPECIAL TORQUE REQUIREMENTS
Ref. Ref.
Chart
New Old
900 829 AQ-AZ
903 840 AQ-AZ
904 839 AQ-AZ
905 853 AQ-AZ
907 :830 AQ-AZ 909 862 AQ
AZ 910 864 AQ-AZ
911 865 AQ-AZ 912 AQ-AZ 913 857 AQ-AZ 915 869 AQ-AZ
AQ-AZ
AQ-AZ 917 AQ-AZ 918 AQ-AZ 919 871 AQ-AZ 921 AQ-AZ
Coupling Size Tube OD
2.00 in.
2.25 in.
2.25 in.
922 AZ
Turbocharger T18A21 *-AiResearch
See latest editi 923 AZ 924 AQ-AZ
925 867 AQ-AZ
Thread Size Nomenclature
3/8-24 Connecting Rod Nuts -Tighten To Length 3/8-24 Magneto -Nut (To attach drive member to magneto) 10-32 Magneto -Plate Screws 1/4-20 Rocker Box Screws 18MM Spark Plugs Alternator Pulley Nut Alternator Quill Shaft Nut 1/4-28 Alternator Output Terminal Nut 10-32 Alternator Auxiliary Nut 5/16-24 Starter Terminal Nut 1/16-27 NPT Piston Cooling Nozzle in Crankcase 3/4-16 Oil Filter Bolt (AC Can & Element Type) 13/16-16 Oil Filter (Throw Away Type) 3/4-16 Converter Stud 1.00-14 Oil Cooler Bypass Valve 1 1/4-12 Oil Pressure Relief Valve Hose Clamps Exhaust V-Band Coupling Torque Data T-Bolt Split
Avco Lycoming Part No.  Vendor Part No.  Type Locknut Torque In. Lbs. 
LW-12093-5  MVT69183-200  85 
LW-12093-6  MVT69183-225  85 
LW-12125-3  MVT69197-225  85 

Turbocharger V-Band Torque Data
Model No. V-Clamp Part No. V-Clamp Diameter
*  400500-925 9.259.25in.
turbocharger.
　
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