VO,TVO-435-A & VO, TVO-540 MagnetoDrives
SSP1776
4-33
SERVICE TABLE OF LIMITS
PART IV VERTICAL ENGINES
SECTION IV BACKLASH
871
VO-435-BIA
Starter Drives
CRANKSHAFT
8001
ACCESSORY HSG.
VO-435-BIA
Accessory Drive Gear SSP1776 4-34
SERVICE TABLE OF LIMITS 
PART IV VERTICAL ENGINES 
SECTION V -SPECIAL TORQUE REQUIREMENTS 
Ref.  Ref. 
Thread 
New  Old  Chart  Size Nomenclature 
Connecting Rod Nuts 
Connecting Rod Bolt and Nut -Tighten 
to This Length 
Oil Pump Shaft Nut 
Magneto Nut ( To attach drive 
member to magneto) -Steel Bushing 
Screw Plate Nuts (To attach ignition 
cable outlet plate to magneto) 
Rocker Box Screws 
Exhaust Port Studs 
(Driving Torque) 
Nuts to Attach Exhaust Stacks 
to Cylinder Head 
Spark Plugs 
Alternator Pulley Nut 
Alternator Nut (Quill Shaft) 
Alternator Output Terminal Nut 
Alternator Auxiliary Terminal Nut 
NPT Piston Cooling Nozzle in Crankcase 
PT Injector Nozzle in Cylinder Head 
Head Hose Clamps (Worm Type) 
w 
x Head Hose Clamps (Worm Type) 
"T" Bolt Hose Clamps 
Initial Torque......... 
Retorque After Run-in........... 
Cylinder Head Drain Back Hose 
Clamp 
Exhaust Clamp -Coupling -
V-Band (See Service Instruction No. 
1238) 
Cylinder Hold Down Studs 
(Crankcase Driving Torque) 
Cylinder Hold Down Studs 
(Crankcase Driving Torque) 
Cylinder Hold Down Nuts 
Cylinder Hold Down Nuts 
Parting Flange Nuts' Tightening Procedures -See latest 

Torque Limits
480 in. lbs.
2.255 -2.256 360 -480 in. lbs.
300 in. lbs.
15 in. lbs.
50 in. lbs.
40 in. lbs. min.
160 -180 in. lbs. 420 in. lbs. 450 in. lbs. 474 in. lbs.
85 in. lbs.
30 in. lbs. 100 in. Ibs. 60 in. lbs.
20 in. lbs.
45 in. lbs.
35 in. lbs.
25 in. lbs.
10 in. lbs.
100 in. lbs.
250 in. lbs. 300 in. lbs. 600 in. lbs.
edition of Service
4-35

SERVICE  TABLE  OF  LIMITS 
PART IV VERTICAL ENGINES SECTION V -SPECIALTORQUE REQUIREMENTS 
Ref.  Ref. 
New  Old  Chart  Thread Size  Nomenclature 
Accessory Drive Shaft Nut 
Crankshaft  Gear Retaining  Nut 
1/4-28  Thin Slotted Nut (38 in. lbs. plus torque required to reach next locking slot.) 
1/8-27 NPT  Carburetor  Drain  Plug 
　
中國(guó)航空網(wǎng) m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：Lycoming SERVICE TABLE OF LIMITS AND TORQUE VALUE RECOMMENDATIONS(63)