3-50
STANDARD TORQUE
UNLESS OTHERWISE LISTED
Torque limits for propeller attaching bolts to be supplied by propeller or airframe manufacturer.
TABLE IITABLE I PIPE PLUGS BOLTS, SCREWS AND NUTS
TorqueTorcue Torque Thread In. Lbs.
Thread In. Lb. Ft. Lb. Thread In. Lb. Ft. Lb.
1/16-27 NPT 40
10 49 1/2 900 75
1/8-27 NPT 40
1/4 96 9/16 1320 110
1/4-18 NPT 85
5/16 204 17 5/8 1800 150
3/8-18 NPT 110
3/8 360 30 3/4 3240 270
1/2-14 NPT 160
7/16 600 50
3/4-14 NPT 230 1-11 1/2 NPT 315
THIN NUTS (1/2 DIA OF BOLT) -1/2 LISTED TORQUE
TABLE IV TABLE III
FLEXIBLE HOSE OR TUBE FITTINGSCRUSH TYPE ASBESTOS GASKETS
Thd. Pitch On Part To Be Tightened Threads Per Inch 8 10 12 14 16 18 20 24 28 ANGLE OF TURN Aluminum Copper Asbestos Asbestos 1350 135 180 180 270 270 270 360 360 670 670 900 900 1350 1350 1350 1800 1800 Tube Size (-3) 3/16 (-4) 1/4 (-5) 5/16 (-6) 3/8 (-8) 1/2 (-10) 5/8 Thread 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 Torque In. Lbs. 30 30 35 35 60 70
NOTE TABLE V
Install all crush type gaskets except the self centering type, with the unbroken surface against the flange of the plug or part being tightened against the seal. Turn the part until the sealing surfaces are in contact and then tighten to the angle of turn listed for the appropriate thread size. NOTE: Lubricate Threads Unless OtherwiseSpecified. STUDS MIN. DRIVING TORQUE TorqueThreads In. Lb s. 1/4-20 15 5/16-18 25 3/8-16 50
SSP1776 3-51
SERVICE TABLE OF LIMITS
PART III GEARED ENGINES SECTIONV -SPECIALTORQUE REQUIREMENTS
Engine Accessories and Hardware
3-52
SERVICE TABLE OF LIMITS
PART III GEARED ENGINES SECTIONV -SPECIALTORQUE REQUIREMENTS
911
ALTERNATOR & ALTERNATOR DRIVE
OIL PUMP MAGNETO
Engine Accessories and Hardware
SSP1776 3-53
SERVICE TABLE OF LIMITS
PART III GEARED ENGINES
SECTIONV -SPECIALTORQUE REQUIREMENTS
SECTIONTHRUREDUCTIONGEAR
Engine Accessories and Hardware
3-54
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