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Series 53 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 12-17 16-23
1/4-28 Standard Torque Specification 8-10 11-14
Screw-Injector Rack Control Lever 2-3 3-4
5/16-18 Bolt-Oil Pan (Low Pan or Aluminum Flywheel Housing & Front Cover) 10-20 14-27
5/16-18 Bolt Water Pump Cover 12-15 16-20
5/16-18 Bolt-Flywheel Housing to Gov Housing (Inline) 10-12 14-16
5/16-18 Bolt-Oil Pick-up Tube 20-25 27-34
5/16-18 Bolt-Idler Gear Hub and Spacer Alum 15-20 20-27
5/16-18 Bolt-Air Box Cover 1/4 Thick Clamp 8-10 11-14
5/16-18 Standard Torque Specification 13-17 18-23
Bolt-Idler Gear Hub and Spacer (Cast) 19-23 26-31
Bolt-Oil Pan (Cast) - Hard Gasket 13-21 18-28
5/16-24 Standard Torque Specification 15-19 20-26
Nut-Push Rod Lock 15-19 20-26
Bolt-Blower Rotor Gear Hub 25-30 34-41
Bolt Blower Thrust Washer Retaining 25-30 34-41
Bolt-Blower Drive Cam Pilot 25-30 34-41
5/16-24 Nut-Connecting Rod V53 Only 24-28 33-38
3/8-16 Standard Torque Specification 30-35 41-47
Bolt-Rocker cover Hold Down 8-13 11-18
Bolt-Flywheel Housing to Idler Gear and Dummy Hub ( Place Type) 40-45 54-61
Bolt-Air Inlet Housing to Blower 16-21 22-28
Nut-Oil Cooler Element 90-110 122-149
Bolt-Front and Rear Blower End Plate Cover 20-25 27-34
Bolt-Flywheel Housing Balance Weight Cover 20-25 27-34
3/8-16 Bolt-Front and Rear Blower End 20-25 27-34
Bolt-Housing to Intercooler 10-15 14-20
Bolt-Air Box Cover Cast 6V53 12-17 16-23
Bolt-Air Box Cover Inline 53 12-16 16-22
Bolt-Air Box Cover 3/8 Thick Clamp 10-15 14-20
Bolt-Injector Clamp 20-25 27-34
3/8-24 Standard Torque Specification 35-39 47-53
Connector-Fuel 34-40 46-54
Bolt-Accessory Drive to Balance Gear (Steel Disc) 45-0 61-68
Bolt-Blower Thrust Plate Retainer 54-59 73-80
Bolt-Flywheel Housing Balance 25-30 34-41
Bolt-Front and Rear End Plate Cover 20-25 27-34
Nut-Connecting Rod Inline and Vee 40-45 54-61
Nut-Plug blower Drive Assembly and Flywheel Housing Plug Nuts 5-30 34-41
Nut-Fuel Jumper Line 12-16 16-22
7/16-14 Standard Torque Specification 46-50 62-68
Bolt-Tachometer Drive Cover 30-35 41-47
Bolt-Crankshaft Outboard Main Bearing Support to Cover 75-85 102-115
Bolt-Flywheel Housing Large Hole Cover 30-35 41-47
Stud-Exhaust Manifold 25-40 34-54
Bolt-Rocker Arm Bracket 50-55 68-75
7/16-20 Standard Torque Specification 57-61 77-83
Nut-Exhaust Manifold 30-35 41-47
1/2-13 Standard Torque Specification 71-75 96-102
Bolt-Tachometer Drive Cover 30-35 41-47
Bolt-Flywheel Housing Large Hole Cover 30-35 41-47
1/2-20 Standard Torque Specification 83-93 113-126
Bolt-Blower Rotor Gear Retainer 25-30 34-41
Bolt-Flywheel 110-120 149-163
Plug-Fuel Pump Relief Valve 18-22 24-30
9/16-12 Standard Torque Specification 90-100 122-136
9/16-18 Standard Torque Specification 107-117 145-159
Stud-Clutch Fork Ball 65-75 88-102
5/8-11 Standard Torque Specification 137-147 186-199
Bolt-Starter To Aluminum Flywheel Housing 95-105 129-143
5/8-18 Standard Torque Specification 168-178 228-241
Nut-Governor Gear 125-135 169-183
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
Caps-Injector Filter 65-75 88-102
Nut Standard, Dipstick Tube 30-35 41-47
Nut-Accessory Drive Pulley 120-140 163-190
3/4-16 Standard Torque Specification 290-300 393-407
Bolt-Crankshaft End 290-300 393-407
7/8-14 Standard Torque Specification 475-485 644-658
1-14 Bolt-Crankshaft End 290-310 393-420
1/18-18 Nut-Cam and Balance Shaft 300-325 407-441
1/4-28 Bolt-Blower Drive Coupling to Rotor Gear 16-18 22-24
7/16-14 Bolt-Blower to Block 55-60 75-81
Nut-Fuel Jumper Line-Stl to Inject 13-17 18-23
7/16-20 Nut-Fuel Jumper Line CTD-Injector 11-13 15-18
9/16-12 Bolt-Cylinder Head End 3-53 Alum 170-180 230-244
Bolt-Main Bearing Cap 120-130 163-176
9/16-18 Bolt-Flywheel V53 180-190 244-258
5/8-11 Bolt-Cylinder Head 190-200 258-271

Series 53 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 (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 1/4-11 1/2 Plug-Pipe (3/4 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

Series 53 Stud

Thread Size (in.) Class & Application Torque Specifications
lb-ft N-m
7/16-14 Stud-Exhaust Manifold 25-40 34-54
9/16-18 Stud-Clutch Fork Ball 65-75 88-102

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