Lycoming SERVICE TABLE OF LIMITS AND TORQUE VALUE RECOMMENDATIONS(20)

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932 858 ALL 5/16-18  Exhaust Transitions -Studs (DrivingTorque) 100 in. lbs.
ALL 3/8-16  Exhaust Transitions -Studs (DrivingTorque) 200 in. lbs.
SECTION V SPRINGS
Length COMP. LOAD Avco Lyc. Wire At Comp. Mfr. Mfr. Serv. Nomenclature Part No. Dia. Length Min. Max. Max.
950 800  A-B-D-G-J-S-T-Y-Outer Valve Springs 76994 BD-BE (Parallel) LW-11800 .177 1.30 in. 112 lb. 122 lb. 109 lb. min.
A-B-D-G-J-S-T-Y-Outer ValveSprings
951 801  A-B-D-G-J-S-T-Y-
BD-BE (Parallel) 65427 .162 1.30 in. 82 lb. 89 lb. 79 lb. min.
S1-S2-S3-S5-S6-Outer Valve Springs
S7-S9-S10-T2-T3 (Angle) 68326 .177 1.46 in. 103lb. 111 lb. 100 lb. min.

Outer Valve Springs
(Angle) LW-11796 .182 1.43 in. 116 lb. 124 lb. 113 lb. min.

Auxilliary Valve 65567
951  A-B-D-G-J-S-T-Y-
BD-BE Spring (Parallel) LW-11795 .135 1.17 in. 61 lb. 67 lb. 58 lb. min.
S1-S2-S3-S5-S6-S7-Auxilliary Valve 68328
S9-S10-T2-T3-AF Spring (Angle) LW-11797 .142 1.33 in. 75 lb. 83 lb. 72 lb. min.

952 802 ALL Oil Pressure Relief 803 (AS APPLICABLE) Valve Spring Avco Lycoming Identification Part Numbers Dye Free Length
61084
None 2.18 .054 1.30 in. 8.5 lb. 9.5 lb. 8.3 lb. min. 65703 None 2.16 .063 1.47 in. 17.8 lb. 19.4 lb. 18.0 lb. min 68668 Purple 2.04 .054 1.30 in. 7.1 lb. 7.8 lb. 6.9 lb. min. 77467 Yellow 1.90 .054 1.30 in. 6.4 lb. 7.1 lb. 6.2 lb. min. LW-11713 White 2.12 .059 1.44 in. 10.79 lb. 11.92 lb. 10.5 lb. min.
953 811 A-B-G-J-S-T-Y-AF Oil Cooler Bypass Spring .0465 1.94 in. 6.50 lb. 7.25 lb. 6.41 lb. min.
954 :BD-BE  Oil Filter Bypass Spring .047 1.00 in. 3.05 lb. 3.55 lb. 3.0 lb. min.
955 806 D  Magneto Coupling Spring .091 .603 in. 20 lb. 22 lb. 19 lb. min.
STANDARD TORQUE UNLESS OTHERWISE LISTED
Torque limits for propeller attaching bolts to be supplied by propeller or airframe manufacturer.
TABLE IITABLE I PIPE PLUGSBOLTS, 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
TorqueThd. Pitch On Part ANGLE OF TURN Tube Size Thread In. Lbs.
To Be Tightened Aluminum CopperThreads Per Inch Asbestos Asbestos (-3) 3/16 3/8-24 30
8 135° 67° (-4) 1/4 7/16-20 30 10 135° 67° (-5) 5/16 1/2-20 35 12 180° 90° (-6) 3/8 9/16-18 35
14 180° 90°
(-8) 1/2 3/4-16 60
16 270° 135°
(-10) 5/8 7/8-14 70
18 270° 135°
20 270° 135°
24 360° 180°
　
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