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Series 71 (Inline Except 2 Cylinder) Torque Specifications

Thread Size (in.) Class & Application Torque Specifications
lb-ft N-m
1/4-20 Standard Torque Specification 7-9 9-12
Bolt-Injector Control Shaft Bracket 10-12 14-16
Bolt-Cam Follower Guide 12-16 16-22
1/4-28 Standard Torque Specification 96-120 130-163
Screw-Inj. Rack Control Lever 24-36 33-49
5/16-18 Standard Torque Specification 156-204 212-277
Bolt-Oil Pan (Cast) - Hard Gasket 13-21 18-28
Bolt-Oil Pan (Low Pan or In Aluminum F/W Hsg. & Front Cover) 10-12 14-16
5/16-24 Standard Torque Specification 15-19 20-26
Nut-Lock-Push Rod 15-19 20-26
Bolt-Blower Drive Coupling Rotor Gear 20-25 27-34
Bolt-Blower Rotor Gear Hub 25-30 34-41
Nut-Lock Valve Bridge Adj. Screw 20-25 27-34
7/16-14 Standard Torque Specification 46-50 62-68
Bolt-Tach. Drive 30-35 41-47
Bolt-Lifter Bracket 55-60 75-81
Bolt-Valve Bridge Guide (Nylon-Insert) 46-50 62-68
Bolt-Flywheel Housing Large Hole Cover 30-35 41-47
Bolt-Blower to Block 55-60 75-81
7/16-20 Standard Torque Specification 57-61 77-83
Connector-Fuel (Steel Washer) 40-45 54-61
Nut-Exhaust Manifold 30-35 41-47
Nut-Connecting Rod 60-70 81-95
Connector- Fuel (Nylon Insert) 30-35 41-47
Nut-Connecting Rod 60-70 81-95
Bolt-Connecting Rod to Pin 55-60 75-81
3/8-16 Standard Torque Specification 30-35 41-47
Bolt-Camshaft & Seal End Bearing 35-40 47-54
Bolt-Flywheel Hsg to Idler Gear & Dummy 40-45 54-61
Bolt-Air Box Cover 10-15 14-20
Bolt-Rocker Cover Hold-Down Special 12-Point 15-20 20-27
Bolt-Injector Clamp 20-25 27-34
Bolt-Oil Pan 10-20 14-27
3/8-24 Standard Torque Specification 35-39 47-53
Bolt-Accessory Drive to Balance Gear (Steel Disc) 45-50 61-68
Bolt-Lower Front Cover 25-30 34-41
Nut-Water Manifold 20-25 27-34
Bolt-Balance Weight to Hub 25-30 34-41
Bolt-Balance Weight to Timing Gear 25-30 34-41
Bolt & Nut-Blower Drive Gear 25-30 34-41
Nut-Exhaust Outlet Manifold Flange 20-25 27-34
Nut-Fuel Jumper Line O Ring 13-17 18-23
Nut-Fuel Jumper Line Flared 11-13 15-18
Nut-Injector Clamp 20-25 27-34
1/2-13 Standard Torque Specification 71-75 96-102
Bolt-Flywheel Housing 90-100 122-136
Bolt-Idler Gear Hub and Dummy Hub 80-90 108-122
Bolt-Tach. Drive Cover 30-35 41-47
Bolt-Engine Mtg Brkt to Frt Cover 90-100 122-136
Bolt-Front Cover (Crankshaft) 80-90 108-122
Bolt-Flywheel Housing Large Hole Cover 30-35 41-47
Bolt-Rocker Shaft Bracket to Cyl Head 90-100 122-136
1/2-20 Standard Torque Specification 83-93 113-126
Bolt-Blower Rotor Gear Retainer 55-65 75-88
Nut-Oil Pump Drive Idler Gear Shaft 60-70 81-95
9/16-12 Standard Torque Specification 90-100 122-136
9/16-18 Standard Torque Specification 107-117 145-159
Nut-Crankshaft Bearing Cap 140-150 190-203
Bolt-Flywheel 180-190 244-258
Bolt-Flywheel (V-53) 12-16 16-22
Bolt-Cylinder Head 140-150 190-203
5/8-11 Standard Torque Specification 137-147 186-199
Bolt-Starter to Aluminum Flywheel Housing 95-105 129-142
Bolt-Main Bearing (Boring) 165-175 224-237
Bolt-Main Bearing (Assembly) 180-190 244-258
Bolt-Cylinder Head 190-200 258-271
5/8-18 Standard Torque Specification 168-178 228-241
Bolt-Lube Oil Filter Center 50-60 68-81
Nut-Alternator Pulley 70-80 95-108
Nut-Special Self Locking Nut (10SI Alternator) 40-60 54-81
Bolt-Main Bearing (Boring) 140-155 190-210
Bolt-Main Bearing (Assembly) 155-185 210-251
Nut-Cylinder Head 190-200 258-271
3/4-10 Bolt-Crankshaft Main Bearing 280-290 380-393
3/4-16 Standard Torque Specification 290-300 393-407
Nut-Accessory Drive Pulley 120-140 163-190
3/4-18 Nut Standard, Dipstick Tube 30-35 41-47
3/4-24 Bolt-Balance Weight Cover 25-30 34-41
7/8-14 Standard Torque Specification 475-485 644-658
7/8-18 Bolt-Oil Pump Relief Valve Cover 25-35 34-47
1-14 Bolt Crankshaft End 440-460 597-624
1 1/8-18 Nut-Cam and Balance Shaft 300-325 407-441
1 3/4-16 Nut-Transfer Drive Gear (Marsden) 375-400 508-542

Series 71 (Inline Except 2 Cylinder) Pipe Plug

Plug Size in. Characteristic Torque Specifications
lb-ft N-m
1/8-27 Plug-Pipe (3/4 Taper) 10-12 14-16
1/4-18 Plug-Pipe (3/4 Taper) 14-16 19-22
1/4-18 Plug-Pipe (3/4 Taper) 38-42 52-57
1/4-18 Plug-Pipe (7/8 Taper) 14-16 19-22
3/8-18 Plug-Pipe (3/4 Taper) 18-22 24-30
3/8-18 Plug-Pipe (7/8 Taper) 18-22 24-30
1/2-14 Plug-Pipe (3/4 Taper) 23-27 31-37
1/2-14 Plug-Pipe (7/8 Taper) 23-27 31-37
3/4-14 Plug-Pipe (3/4 Taper) 33-37 45-50
3/4-14 Plug-Pipe (7/8 Taper) 33-37 45-50
1-11 1/2 Plug-Pipe (3/4 Taper) 75-85 102-115
1-11 1/2 Plug-Pipe (7/8 Taper) 75-85 102-115
1 1/4-11 1/2 Plug-Pipe (3/4 Taper) 95-105 129-142
1 1/4-11 1/2 Plug-Pipe (7/8 Taper) 95-105 129-142
1 1/2-11 1/2 Plug-Pipe (3/4 Taper) 110-130 149-176
1 1/2-11 1/2 Plug-Pipe (7/8 Taper) 110-130 149-176
1/2-20 Plug-Fuel Pump Relief Valve 18-22 24-30
1 1/4-16 Plug-Oil Filter Bypass valve 95-105 129-142

Series 71 (Inline Except 2 Cylinder) Stud

Thread Size (in.) Class & Application Torque Specifications
lb-ft N-m
7/16-20 Stud Standard 30-35 41-47