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10-32  Screws (To attach accessory drive coupling plate) 
Carburetor  Throttle  Lever Screw 
Accessory Accessory Screw  Drive Shaft and Drive Gear Attaching 
SECTION V -SPRINGS 
Nomenclature Outer Valve Springs (Angle)  Avco Lye. 68326  Wire .177  Lenght 1.46 in.  Min. 103 lb. 
Outer Valve Springs (Angle)  LW-11796  .182  1.43 in.  114 lb. 
Auxiliary Valve Springs (Angle)  68328  .142  1.33 in.  75 lb. 
Auxiliary Valve Springs (Angle)  LW-11797  .142  1.33 in.  73 lb. 
Check Valve Springs 
Lycoming Part Numbers  Free 
654-B  .031  1.03 in.  .74 lb. 
73761  .041  1.03 in.  3.15 lb. 
Oil Pressure Relief Valve Spring 
Part  Lycoming Numbers  Dy Identification e Free Length 
68542 LW-14029  No Wh ne ite  2.38 2.28  .067 .072  1.66 in. 1.66 in.  15 lb. 20 lb. 
Accessory Drive Coupling Spring 
Lycoming Part Numbers  F ree Length 
74616  1.25  .092  1.10  23 lb. 

Torque Limits
75 -125 ft. lbs. 150 ft. lbs.
38 in. lbs. 50 -60 in. lbs.
25 -30 in. lbs. 20 -28 in. lbs.
100 -120 in. lbs.
COMP.  LOAD 
Mfg.  Serv. 
Max.  Max. 

111 lb. 100 lb. min. 124 lb. 111 lb. min. 83 lb. 72 lb. min. 83 lb. 70 lb. min.
.94 lb. .69 lb. min.
3.35 lb. 3.10 lb. min.
17 lb. 14 lb. min. 22 lb. 17 lb. min.
26 lb. 20 lb.
SERVICE TABLE OF LIMITS STANDARD TORQUE UNLESS OTHERWISE LISTED
Torque limits for propeller attaching bolts to be supplied by propeller or airframe manufacturer.
TABLE I
BOLTS, SCREWS AND NUTS
Torque TorqueThread In. Lb. Ft. Lb. Thread In. Lb. Ft. Lb.
10 49 1/2 900 75
1/4 96 9/16 1320 110
5/16 204 17 5/8 1800 150
3/8 360 30 3/4 3240 270
7/16 600 50

THIN NUTS (1/2 DIA OF BOLT) -1/2 LISTED TORQUE
TABLE III
CRUSH TYPE ASBESTOS GASKETS
Thd. Pitch On Part ANGLE OF TURN
Tube Size
To Be Tightened Aluminum Copper Threads Per Inch Asbestos Asbestos
(-3) 3/16 8 1350 670 (-4) 1/4 10 1350 670 (-5) 5/16 12 1800 900 (-6) 3/814 1800 900
(-8) 1/2
16 2700 1350
(-10) 5/8
18 2700 1350
20 2700 1350
24 3600 1800
28 3600 1800

NOTE
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 Otherwise Specified.
　
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本文鏈接地址：Lycoming SERVICE TABLE OF LIMITS AND TORQUE VALUE RECOMMENDATIONS(64)