Cat 257B3 Series 3 Engine Bolt Torque Specifications

Values are in foot pounds, Ft Lbs,
Main Crankshaft Bearing Cap Bolts 72 - 80
Flywheel Bolts ( for crankshaft with 6 flywheel bolts and 2 dowel pins ) 57.9 - 65.1
Front Crankshaft Pully 354 - 369
Oil Pump Gear 21.0 - 28.2
Connecting Rod Cap Bolt 36.2 - 43.4
Cylinder Head Bolts 83 - 90
Rocker Cover Bolts 7.23 - 9.40
Rocker Shaft Brackets 7.23 - 14.50
Camshaft Thrust Plate 7.23 - 9.40
Front Timing Gear Plate to Block 7.23 - 9.40
Front Timing Gear Case 7.23 - 9.40
Timing Idler Gear Thrust Plate 21.7 - 28.9
Oil Pan Bolts for press stamped oil pan 7.23 - 9.40
Flywheel Housing / Rear Plate 39.8 - 48.5
Oil Pan Drain Plug M14 size 25.3 - 32.5
Oil Pan Drain Plug M20 size 54.2 - 61.5
Fuel Injector Retainer Bolt 14.5 - 17.4
Fuel Injector Lines 19.5 - 23.9
Fuel Injection Pump Delivery Valve Holders 25.3 - 28.9
Fuel Injection Pump Drive Gear 56.4 - 63.7
Glow Plug tightening to head 14.5 - 21.7
Glow Plug wire terminal connection nut 0.72 - 1.08
Exhaust Manifold Bolt ( no spacer ) 20.3 - 24.6
Exhaust Manifold Bolt ( with spacer ) 10.8 - 15.9
Oil Pressure Relief Valve 32.5 - 39.8
Water Temperature Switch, Thermoswitch 15.2 - 18.1
Safety Valve or plug 47.0 - 54.2
Coolant drain plug 26.0 - 31.8

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Contact us for Cat 257B3 Series 3 Multi Terrain Loader Engine Parts

Note: These newer Cat C3.4 DIT Series 2 engines and Cat C3.4 DIT Series 3 engines can have different pistons, compression ratios, different crankshafts, and different internal parts than the older 3044 and C3.4 engine. Please provide your serial number to determine the correct parts for your engine.

Heavy Equipment Restoration Parts LLC
4730 118th Ave
Fennville Michigan 49408 USA
Phone: 269 673 1638
Fax: 269 673 7226

email: EngineParts@HeavyEquipmentRestorationParts.com
alternate email: EngineParts2@gmail.com

Website: www.HeavyEquipmentRestorationParts.com

Cat 257B3 Series 3 Engine Bolt Torque Specifications