Cat C3.4T Engine Parts and Service Technical Information
Skid Steer Loaders
Multi Terrain Loaders
Compact Track Loaders
Compact Wheel Loaders
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Note: The newer C3.4 DIT engines can have different compression ratios, different pistons, different crankshafts
and some different internal parts than the older 3044 and 3.4 engines. Please provide your engine serial number to determine the correct parts
for your engine. Updated information for the Cat C3.4 DIT is available here: www.C34DIT.com
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Four Cylinder In-Line Water Cooled Diesel
Bore: 94 MM 3.701 Inch
Stroke: 120 MM 4.724 Inch
Firing Order: 1-3-4-2
Rotation: counterclockwise viewed from flywheel
Overhead Intake Valves, Overhead Exhaust Valves,
Intake Valve Timing: Open BTDC 18 degrees Close ABDC 54 degrees
Exhaust Valve Timing: Open BBDC 66 degrees Close ATDC 22 degrees
Valve Clearance ( engine cold ) Inlet Valve 0.25MM ( 0.0098 Inch )
Valve Clearance ( engine cold ) Exhaust Valve 0.25MM ( 0.0098 Inch )
Valve Angle: Inlet Valve 30 degrees , Exhaust Valves 30 degrees,
Head Bolt Torque: 83.2 - 90.4 Ft Lbs
Cylinder Head Bolt Tightening Sequence and Head Bolt Torque
Click here to view and print the head bolt tightening sequence.
Standard Cylinder Bore Inside Diameter 94.00 MM - 94.035 MM
Oversize Bore 0.25MM Oversize Cylinder Bore Inside Diameter 94.25 MM - 94.285 MM
Oversize Bore 0.50MM Oversize Cylinder Bore Inside Diameter 94.50 MM - 94.535 MM
Standard Piston Outside Diameter 93.955 MM - 93.985 MM
Click here to view and print the Standard Piston and Standard Piston Ring Measurements
Oversize Piston 0.25MM Oversize Piston Outside Diameter 94.205 MM - 94.235 MM
Oversize Piston 0.50MM Oversize Piston Outside Diameter 94.455 MM - 94.485 MM
Click here to view and print the Oversize Piston and Oversize Piston Ring Measurements
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Main Bearing Bolt Torque 72.3 Ft Lbs - 79.6 Ft Lbs
Click here to view and print the Main Bearing Bolt Torque
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Connecting Rod Bearing Bolt Torque 36.2 Ft Lbs - 43.4 Ft Lbs
Click here to view and print the Connecting Rod Bearing Bolt Torque
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Crankshaft Main Bearing Journal Standard Size 77.955 MM - 77.970 MM
Click here to view and print the Crankshaft Main Bearing Journal Standard Size
Crankshaft Main Bearing Journal Undersize 0.25 MM .010 " Size 77.705 MM - 77.720 MM
Crankshaft Main Bearing Journal Undersize 0.50 MM .020 " Size 77.455 MM - 77.470 MM
Crankshaft Main Bearing Journal Undersize 0.75 MM .030 " Size 77.205 MM - 77.220 MM
Crankshaft Main Bearing Journal Undersize 1.00 MM .040 " Size 76.955 MM - 76.970 MM
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Connecting Rod Crankshaft Journal Standard Size 57.955 MM - 57.970 MM
Click here to view and print the Connecting Rod Crankshaft Journal Standard Size
Connecting Rod Crankshaft Journal Undersize 0.25MM 0.010" Size 57.705 MM - 57.720 MM
Connecting Rod Crankshaft Journal Undersize 0.50MM 0.020" Size 57.455 MM - 57.470 MM
Connecting Rod Crankshaft Journal Undersize 0.75MM 0.030" Size 57.205 MM - 57.220 MM
Connecting Rod Crankshaft Journal Undersize 1.00MM 0.040" Size 56.955 MM - 56.970 MM
Engine ReRing Kit includes:
piston rings, big end connecting rod bearings, main crankshaft bearings, thrust washers,
complete engine gasket and seal set with head gasket, valve seals, front crankshaft seal and rear crankshaft seal,
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Rings Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" ,
Rod Bearing Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" , 0.75 MM , 0.030" , 1.00 MM , 0.040" ,
Main Bearing Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" , 0.75 MM , 0.030" , 1.00 MM , 0.040" ,
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Engine Overhaul Kit includes:
pistons, piston rings, piston pins, piston pin retainers,
big end connecting rod bearings, main crankshaft bearings, thrust washers,
piston pin/small end connecting rod bushings,
complete engine gasket and seal set with head gasket, valve seals, front crankshaft seal and rear crankshaft seal,
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Piston and Rings Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" ,
Rod Bearing Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" , 0.75 MM , 0.030" , 1.00 MM , 0.040" ,
Main Bearing Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" , 0.75 MM , 0.030" , 1.00 MM , 0.040" ,
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Cylinder Head Rebuild Kit includes:
intake valves, exhaust valves, intake valve guides, exhaust valve guides,
intake valve seats, exhaust valve seats, valve springs, valve spring retainers, valve keepers,
( note: the valve stem seals are in the Engine ReRing Kits and Engine Overhaul Kits )
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Additional parts are available:
Connecting Rod
Crankshaft
Engine Oil Pump
Engine Water Pump
Camshaft
Lifters
Injectors
Head Bolt Sets
Connecting Rod Bolt Sets
Main Cap Bolt Sets
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Delivery available: United States, Canada, and worldwide.
Contact us for a price quote:
Heavy Equipment Restoration Parts LLC
4730 118th Ave
Fennville Michigan 49408 USA
Phone: 269 673 1638
email: EngineParts@HeavyEquipmentRestorationParts.com
alternate email: EngineParts2@gmail.com
Website: www.HeavyEquipmentRestorationParts.com
