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Series 149 Torque Specifications

Thread Size (in.)Class & ApplicationTorque Specifications
lb-ftN-m
1/4-28Standard Torque Specification8-1011-14
Screw-Inj. Rack Control Lever2-33-4
5/16-18Standard Torque Specification13-1718-23
Bolt-Turbocharger Back Plate Assembly to Center Housing7-109-14
5/16-24Standard Torque Specification15-1920-26
Nut-Lock-Push Rod15-1920-26
Nut-Lock Valve Bridge Adj. Screw20-2527-34
Bolt-Camshaft Drive Coupling20-2527-34
3/8-16Standard Torque Specification30-3541-47
3/8-24Standard Torque Specification35-3947-53
Nut-Water Pump to Front Cover25-3034-41
Bolt-Camshaft Drive Coupling45-5061-68
Bolt-Fuel Pump Drive Coupling Retainer50-5568-75
7/16-14Standard Torque Specification46-5062-68
Bolt-Blower Hold Down50-5568-75
Bolt-Injector Hold Down Clamp46-5062-68
7/16-20Standard Torque Specification57-6177-83
Nut-Fuel Jumper Line to Injector18-2224-30
Nut-Water Pump Shaft (Lock)40-4554-61
Bolt-Crankshaft Flange Coupling70-8095-108
1/2-13Nut-Exhaust Manifold Standard32-3843-52
Nut-Fuel Manifold Connector35-4047-54
Bolt-Fan Blade to Pulley Hub71-7596-102
Bolt-Cylinder Block75-85102-115
Bolt-Crankshaft and Camshaft Idler Hub Center Bolt80-90108-122
Bolt-Camshaft Bearing Cap90-100122-136
Bolt-Rocker Arm Shaft90-100122-136
1/2-20Standard Torque Specification83-93113-126
Nut-Exhaust Manifold Stud35-4047-54
Bolt-Cylinder Block85-95115-129
Bolt-Crankshaft Flange Coupling100-110136-149
9/16-12Standard Torque Specification90-100122-136
Bolt-Blower Hold Down75-85102-115
Bolt-Main Bearing Cap120-130163-176
9/16-18Standard Torque Specification107-117145-159
Nut-Crankshaft Bearing Cap130-140176-190
Bolt-Cylinder Head90-100*122-136
5/8-11Standard Torque Specification137-147186-199
5/8-18Standard Torque Specification168-178228-241
Bolt-Crankshaft Adaptor175-185237-251
Bolt-Flywheel (Self Locking)180-190244-258
Bolt-Vibration Damper180-190244-258
Nut-Raw Water Pump Shaft Retaining25-3034-41
Nut-Alternator Pulley70-8095-108
Nut-Special Self Locking Nut (10SI Alternator)40-6054-81
Bolt-Oil Pick-Up Assembly20-2527-34
3/4-10Nut-Flange Mounted Air Compressor Drive Shaft70-8095-108
Bolt-Crankshaft Main Bearing280-290380-393
3/4-16Standard Torque Specification290-300393-407
 Accessory Drive Pulley Nut120-140163-190
3/4-18Nut, Dipstick Tube30-3541-47
7/8-14Standard Torque Specification475-485644-658
1 1/4-7Bolt-Crankshaft Pulley Retainer450-500610-678
1 5/16-18Nut-Blower Timing Gear200-250271-339
2.548-18Nut-Idler Gear Bearing (Lock)280-300380-407
3.137-12Nut-Camshaft Gear Bearing (Lock)280-300380-407

* Follow cross-pattern bolt torquing sequence and multiple stage process leading up to the final torque process.   After final torque is achieved, turn each bolt 90 degrees (1/4 turn clock-wise) with a single smooth pull of the wrench.

Series 149 Pipe Plug Oil Cooler

Plug Size (in.)CharacteristicTorque Specifications
lb-ftN-m
1 1/16-16Plug-Oil Cooler Bypass Valve80-90108-122
1 1/4-16Plug-Oil Filter Bypass Valve95-105129-142
1 1/2-6Plug-Oil Filter Bypass Valve110-130149-176
2-12Plug-Oil Filter Bypass130-150176-203

Series 149 Pipe Plug

Plug Size (in.)CharacteristicTorque Specifications
lb-ftN-m
1/8-27Plug-Pipe (3/4 Taper)10-1214-16
1/4-18Plug-Pipe (3/4 Taper)14-1619-22
1/4-18Plug-Pipe (7/8 Taper)14-1619-22
3/8-18Plug-Pipe (3/4 Taper)18-2224-30
3/8-18Plug-Pipe (7/8 Taper)18-2224-30
1/2-14Plug-Pipe (3/4 Taper)23-2731-37
1/2-14Plug-Pipe (7/8 Taper)23-2731-37
3/4-14Plug-Pipe (3/4 Taper)33-3745-50
3/4-14Plug-Pipe (7/8 Taper)33-3745-50
1-11 1/2Plug-Pipe (3/4 Taper)75-85102-115
1-11 1/2Plug-Pipe (7/8 Taper)75-85102-115
1 1/4-11 1/2Plug-Pipe (3/4 Taper)95-105129-142
1 1/2-11 1/2Plug-Pipe (3/4 Taper)110-130149-176
1 1/2-11 1/2Plug-Pipe (7/8 Taper)110-130149-176

Series 149 Stud

Plug Size (in.)Class & ApplicationTorque Specifications
lb-ftN-m
1/2-13Stud-Exhaust Manifold35-4047-54