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Cummins B-Series 1991-1994 Torque Specifications

Size MM (inch) Class & Application Torque Specifications
N-m lb-ft
10 Aftercooler Mounting 24 18
(5/16) Aftercooler Water Hose Clamp 5 4
(15/16) Alternator Pulley 80 59
13 or (3/4) Alternator Link (Delco 15-20-27 SI) 43 32
16 Alternator Mounting Bolt 15 SI 43 32
18 Alternator Mounting Bolt and Nut 20-27 SI 77 57
13 Alternator Support (Upper) 24 18
23 Balancer Mounting ---Step 1 50 36
  Step 2 80 58
  Step 3 175 129
Allen 8mm Balancer Idler Gear 43 32
Allen 5mm Belt Tensioner Flat Bracket 24 18
15 Belt Tensioner Mounting 43 32
  Camshaft bolt step 1 27 20
  Step 2 Rotate 180 degrees
13 Cam Thrust Plate 24 18
3/8 Coolant Heater 12 9
12 Connecting Rod --- Step1 35 26
  Step 2 70 51
  Step 3 100 73
15 Crankshaft Damper & Pulley 125 92
18 Cylinder Head Mounting ---Step 1 (All) 90 66
  Step 2 (All) Recheck to 90 66
  Step 3 (Long Capsrews) 120 90
  Step 4 Recheck (Long Capsrews Only) 120 90
  Step 5 (All) Rotate 90°    
(5/16) Crossover Clamp 5 4
13 Exhaust Manifold 43 32
13 Exhaust Outlet Pipe Brkt. Mounting 43 32
13 Exhaust Outlet Pipe, Flanged 24 18
(7/16) Exhaust Outlet Pipe, V Band Clamp 8 6
10 Fan Bracket Mounting 24 18
13 Fan pulley 24 18
19 Flywheel 137 101
15 Flywheel Housing 77 57
13 Flywheel Housing Cover 24 18
(1/2) Flywheel Housing Plug 36 25
  Front Cover Cap --Hand Tighten--
18 Front Engine Support Mounting 77 57
(1 1/8) Front Engine Support (Barrel) 350 257
17 Fuel Banjo Screw (in Fuel Pump) 32 27
17 Fuel Banjo Screw (In Head) 24 18
10 Fuel Banjo Screw (In Injector) 9 6
10 Fuel Vent Screw (In Banjo) 9 6
80-95 Fuel Filter 3/4 Turn After Contact
14 Fuel Low Pressure Supply (Lift Pump Outlet) 24 18
24 Fuel Filter Adapter Nut 32 24
17 Fuel Line Fitting (High Press) 24 18
22 Fuel Pump Drive Gear (with Pump Unlocked)    
  Bosch Rotary, Lucas CAV, Stanadyne DB4 65 48
  Nippondenso 123 92
  Bosch (P3000, P7100) 165 122
10 Fuel Pump Lock (Bosch) 30 22
10 Fuel Pump Unlock (Bosch) 13 10
(9/16) Fuel Pump Lock (CAV) (Stanadyne DB4) 12 9
(9/16) Fuel Pump Unlock (CAV) (Stanadyne DB4) 12 9
13 Fuel Pump Mounting Nut (Bosch Rotary, Stanadyne) 24 18
  Fuel Pump Mounting Nut (Nippondenso) 43 32
  Fuel Pump Mounting Nut (Lucas, CAV) 30 22
  Fuel Pump Mounting Nut (Bosch In-line) 43 32
  Fuel Pump Solenoid    
24 (Bosch) VE 43 32
22 (CAV) 15 11
10 Fuel Pump Support Bracket 24 18
10 Gear Cover 24 18
10 Gear Housing-to-Block 24 18
24 Injector Retaining Nut 60 44
10 Intake Manifold Cover 24 18
(5/8) Intake Heater Plug 125 90
10 Lift Pump Mounting/Cover Plate 24 18
18 Lifting Bracket (Rear) 77 57
23 Main Bearing Cap ---Step 1 60 44
  Step 2 119 88
  Step 3 176 129
15 Oil Fill Tube Mounting 43 32
75-85 Oil Filter 3/4 Turn After Contact
10 Oil Cooler Assembly 24 18
17 Oil Pan Drain Plug 80 60
17 Oil Pan Heater Plug 80 60
10 Oil Pan Mounting 24 18
19 Oil Pressure Regulator Plug 80 60
13 Oil Pump Mounting 24 18
13 Oil Suction Tube (Flange) 24 18
10 Oil Suction Tube Brace 24 18
15 PTO Adapter 77 57
13 PTO Adapter Cover Plate (A Drive) 43 32
15 PTO Adapter Cover Plate (B Drive) 77 57
(3/4) PTO Gear Nut A Drive 100 74
(15/16) PTO Gear Nut B Drive 134 100
8 Rear Seal Mounting 9 7
13 Rocker Support 24 18
(9/16) Rocker Lever Nut 34 25
10 Starter Mounting 43 32
10 Tach Drive Retainer 3 2
10 Tappet Cover / Fuel Drain Line Supports 24 18
10 Thermostat Housing 24 18
T-25 Torx Timing Pin Flange Mounting 5 4
10 Turbo Compressor Housing V-Band 8.5 6
15 Turbo Mounting Nut 43 32
13 Turbo Oil Drain Tube 24 18
(5/8) Turbo Oil Supply (Both Ends) 35 26
13 Turbocharger Turbine Housing 20 15
(5/8) Water Hose Clamps 4-5 4
13 Water Inlet Connection 43 32
(3/8) Water Inlet Plugs 24 18
13 Water Pump Mounting 24 18
15 Valve Cover 24 18
  Valve Cover Oil Fill Hand Tighten

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