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| Home / Engines / Kubota Engines / Kubota V2003 |
Kubota V2003 Specifications
| Engine Model: Kubota V2003 |
| Engine Type: 4-cycle vertical 4-cylinder water-cooled diesel engine |
| Total Displacement: 122 cu.in (2.0 L) |
| Rated Engine Power: 43.7 Hp (32.6 kW) at 3020 rpm |
| Fuel System: Indirect fuel injection |
| General Technical Data |
Engine model ............... Kubota V2003-M
Engine type ............... 4-stroke vertical water-cooled diesel
Number of cylinders ............... 4
Total displacement, L (cu.in) ............... 1.99 (122)
Cylinder bore, mm (in) ............... 83.0 (3.27)
Piston stroke, mm (in) ............... 92.4 (3.64)
Gross power, kW (Hp) ............... 32.6 (43.7)
Net power, kW (Hp) ............... 30.8 (41.3)
Maximum speed, rpm ............... 3020
Idle speed, rpm ............... 750-850
Aspiration type ............... Naturally aspirated
Firing order ............... 1-3-4-2
Compression ratio ............... 22.8:1
Combustion chamber ............... Spherical type
Direction of rotation ............... Counter-clockwise
Lubrication system ............... Forced lubrication by trochoid pump
Oil filter type ............... Full flow paper filter (cartridge)
Cooling system ............... Pressurized radiator, forced circulation with water pump
Engine oil capacity, L (qts) ............... 7.6 (8.1)
Starting system ............... Electric starting with starter
Electrical system rating, Volts ............... 12
| Fuel System |
Injection pump ............... PFR-4M, mini pump
Injection nozzle ............... OPD, mini nozzle
Injection pressure, kPa (psi) ............... 13730 (1990)
Injection timing, deg (rad) ............... 16.3 (0.284) before TDC
Governor type ............... Mechanical
| Dimensions and Weight |
Overall length, mm (in) ............... 652 (25.7)
Overall width, mm (in) ............... 480 (18.9)
Overall height, mm (in) ............... 643 (25.3)
Net weight, kg (lbs) ............... 180 (397)
| Cylinder Block |
Cylinder Bore I.D (Std) ............... 83.000-83.022 mm (3.26772-3.26858 in)
Cylinder Bore I.D (Wear Limit) ............... 83.172 mm (3.27448 in)
Cylinder Bore I.D (Oversize) ............... 83.500-83.522 mm (3.28740-3.28827 in)
Crankshaft Alignment – 0.02 mm (0.00079 in)
Crankshaft Journal to Bearing 1 Clearance ............... 0.040-0.118 mm (0.00157-0.00465 in)
Crankshaft Journal to Bearing 2 Clearance ............... 0.040-0.104 mm (0.00157-0.00409 in)
Crankshaft Journal O.D ............... 59.921-59.940 mm (2.35910-2.35984 in)
Crankshaft Bearing 1 I.D ............... 59.980-60.039 mm (2.36142-2.36374 in)
Crankshaft Bearing 2 I.D ............... 59.980-60.025 mm (2.36142-2.36319 in)
Crankpin to Crankpin Bearing Clearance ............... 0.025-0.087 mm (0.00098-0.00343 in)
Crankpin O.D ............... 46.959-46.975 mm (1.84878-1.84941 in)
Crankpin Bearing I.D ............... 47.000-47.046 mm (1.85039-1.85221 in)
Crankshaft Side Clearance (Std) ............... 0.15-0.31 mm (0.0059-0.0122 in)
Crankshaft Side Clearance (Wear Limit) ............... 0.50 mm (0.0197 in)
| Cylinder Head and Valves |
Cylinder Head Surface Flatness ............... 0.05 mm / 500 mm (0.002 in / 19.7 in)
Valve Clearance (Cold) ............... 0.18-0.22 mm (0.0071-0.0086 in)
Top Clearance ............... 0.575-0.675 mm (0.0227-0.0265 in)
Valve Stem to Valve Guide Clearance ............... 0.040-0.070 mm (0.0016-0.0027 in)
Valve Stem O.D ............... 7.960-7.975 mm (0.31339-0.31398 in)
Valve Guide I.D ............... 8.015-8.030 mm (0.31555-0.31614 in)
Valve Seat Width (Intake) ............... 2.12 mm (0.0835 in)
Valve Seat Width (Exhaust) ............... 2.12 mm (0.0835 in)
Valve Seat Angle (Intake) ............... 1.05 rad (60 deg)
Valve Seat Angle (Exhaust) ............... 0.79 rad (45 deg)
Valve Spring Free Length ............... 41.7-42.2 mm (1.6417-1.6614 in)
Valve Opening (Intake) ............... 12 deg (0.21 rad) before T.D.C.
Valve Closing (Intake) ............... 36 deg (0.63 rad) after B.D.C.
Valve Opening (Exhaust) ............... 60 deg (1.04 rad) before B.D.C.
Valve Closing (Exhaust) ............... 12 deg (0.21 rad) after T.D.C.
Camshaft Side Clearance ............... 0.07-0.22 mm (0.0028-0.0087 in)
Camshaft Alignment ............... 0.01 mm (0.0004 in)
Camshaft Journal to Cylinder Bore Clearance ............... 0.050-0.091 mm (0.00197-0.00358 in)
Cam Height (Intake) ............... 33.470 mm (1.318 in)
Cam Height (Exhaust) ............... 33.470 mm (1.318 in)
| Piston and Piston Rings |
Piston Pin Bore I.D (Std) ............... 25.000-25.013 mm (0.98425-0.98476 in)
Piston Pin Bore I.D (Wear Limit) ............... 25.05 mm (0.9862 in)
Piston Pin O.D ............... 25.004-25.011 mm (0.9844-0.9847 in)
Piston Pin to Small End Bushing Clearance ............... 0.014-0.036 mm (0.00056-0.0014 in)
Piston Pin Small End Bushing I.D ............... 25.025-25.040 mm (0.98524-0.98583 in)
Second Ring Groove Clearance (Std) ............... 0.093-0.128 mm (0.0037-0.0050 in)
Second Ring Groove Clearance (Wear Limit) ............... 0.20 mm (0.0079 in)
Oil Ring Groove Clearance (Std) ............... 0.020-0.060 mm (0.0008-0.0023 in)
Oil Ring Groove Clearance (Wear Limit) ............... 0.15 mm (0.0059 in)
Top Ring End Gap (Std) ............... 0.20-0.35 mm (0.0079-0.013 in)
Second Ring End Gap (Std) ............... 0.40-0.55 mm (0.016-0.021 in)
Oil Ring End Gap (Std) ............... 0.25-0.45 mm (0.0098-0.0177 in)
Ring End Gap (Wear Limit) ............... 1.25 mm (0.0492 in)
| Timing Gear |
Crank Gear to Idle Gear Backlash ............... 0.0415-0.1122 mm (0.00163-0.00442 in)
Idle Gear to Cam Gear Backlash ............... 0.0415-0.1154 mm (0.00163-0.00454 in)
Idle Gear to Injection Pump Gear Backlash ............... 0.0415-0.1154 mm (0.00163-0.00454 in)
Crank Gear to Oil Pump Gear Backlash ............... 0.0415-0.1090 mm (0.00163-0.00429 in)
Idle Gear Side Clearance ............... 0.12-0.48 mm (0.0047-0.0189 in)
Idle Gear Shaft to Idle Gear Bushing Clearance ............... 0.025-0.066 mm (0.00098-0.00260 in)
Idle Gear Shaft O.D ............... 37.959-37.975 mm (1.49445-1.49508 in)
Idle Gear Bushing I.D ............... 38.000-38.025 mm (1.49606-1.49705 in)
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| Engines Technical Specifications |