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Kubota D1305 Specifications
| Engine Model: Kubota D1305 |
| Engine Type: 4-cycle vertical 3-cylinder water-cooled diesel engine |
| Total Displacement: 76.9 cu.in (1.3 L) |
| Rated Engine Power: 24.8 Hp (18.5 kW) at 2850 rpm |
| Fuel System: Indirect fuel injection |
Engine model ............... Kubota D1305
Engine type ............... 4-cycle vertical water-cooled diesel
Number of cylinders ............... 3
Cylinder bore, mm (in) ............... 78.0 (3.07)
Piston stroke, mm (in) ............... 88.0 (3.46)
Total displacement, L (cu.in) ............... 1.26 (76.95)
Gross power, kw (hp) ............... 18.5 (24.8)
Net power, kw (hp) ............... 17.9 (24.0)
Maximum speed, rpm ............... 2850
Idling speed, rpm ............... 1000-1100
Maximum torque, Nm (lb-ft) ............... 80.2 (59.4)
Torque speed, rpm ............... 1700
Aspiration type ............... Naturally aspirated
Combustion Chamber ............... Spherical type
Direction of rotation ............... Counter-clockwise
Compression ratio ............... 24:1
Firing order ............... 1-2-3
Lubricating system ............... Forced lubrication by pump
Oil pressure indicating ............... Electrical type switch
Oil filter type ............... Full flow cartridge, paper element
Engine oil capacity, L (qts) ............... 5.7 (6.0)
Starting system ............... Electric starting with starter
Electrical system rating, Volts ............... 12
Fuel injection pump ............... Bosch MD type
Injection nozzle ............... Mini nozzle (DNOPD)
Injection timing, deg (rad) ............... 16 (0.28) before T.D.C.
Injection pressure, kPa (psi) ............... 13730 (1990)
Governor type ............... Centrifugal, mechanical
Overall Length, mm (in) ............... 497 (19.6)
Overall Width, mm (in) ............... 396 (15.6)
Overall Height, mm (in) ............... 590 (23.3)
Net Weight, kg (lbs.) ............... 95 (209)
Cylinder Liner I.D ............... 78.000-78.019 mm (3.0709-3.0716 in)
Cylinder Liner I.D (Oversize) ............... 78.500-78.519 mm (3.0906-3.0912 in)
Crankshaft to Bearing 1 Clearance ............... 0.0340-0.119 mm (0.00134-0.00468 in)
Crankshaft 1 O.D ............... 51.921-51.940 mm (2.0442-2.0448 in)
Crankshaft Bearing 1 I.D ............... 51.974-52.040 mm (2.0463-2.0488)
Crankshaft to Bearing 2 Clearance ............... 0.0340-0.103 mm (0.00134-0.00405 in)
Crankshaft 2 O.D ............... 51.921-51.940 mm (2.0442-2.0448 in)
Crankshaft Bearing 2 I.D ............... 51.974 to 52.024 mm (2.0463 to 2.0481 in)
Crankshaft to Bearing 3 Clearance ............... 0.034-0.098 mm (0.0013-0.0039 in)
Crankshaft 3 O.D ............... 51.921-51.940 mm (2.0441-2.0449 in)
Crank Bearing 3 I.D ............... 51.974-52.019 mm (2.0462-2.0480 in)
Crank Pin O.D ............... 39.959-39.975 mm (1.5732-1.5738 in)
Crank Pin Bearing I.D ............... 40.004-40.050 mm (1.5750-1.5768 in)
Crank Pin to Bearing Clearance ............... 0.029-0.091 mm (0.0011-0.0036 in)
Connecting Rod Alignment ............... 0.05 mm (0.0020 in)
Connecting Rod Small End Bushing I.D ............... 22.025-22.040 mm (0.8671-0.8677 in)
Cylinder Head Surface Flatness ............... 0.05 mm (0.0019 in)
Top Clearance ............... 0.80-1.0 mm (0.032-0.039 in)
Valve Clearance (Cold) ............... 0.145-0.185 mm (0.0057-0.0072 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) ............... 1.047 rad. (60 deg)
Valve Seat Angle (Exhaust) ............... 0.785 rad. (45 deg)
Valve Face Angle (Intake) ............... 1.047 rad. (60 deg)
Valve Face Angle (Exhaust) ............... 0.785 rad. (45 deg)
Valve Recessing ............... 0.05-0.25 mm (0.0020-0.0060 in)
Valve Stem O.D ............... 6.960-6.975 mm (0.2741-0.2746 in)
Valve Guide I.D ............... 7.010-7.025 mm (0.2760-0.2765 in)
Valve Stem to Guide Clearance ............... 0.035-0.065 mm (0.0014-0.0025 in)
Valve Spring Free Length ............... 37.0-37.5 mm (1.457-1.476 in)
Rocker Arm Shaft to Rocker Arm Clearance ............... 0.016-0.045 mm (0.0006-0.0018 in)
Rocker Arm Shaft O.D ............... 11.973-11.984 mm (0.4714-0.4718 in)
Rocker Arm I.D ............... 12.000-12.018 mm (0.4724-0.4731 in)
Camshaft Journal O.D ............... 35.934-35.050 mm (1.4147-1.3799 mm)
Camshaft Bearing I.D ............... 36.000-36.025 mm (1.4173-1.4183 in)
Camshaft Side Clearance ............... 0.07-0.22 mm (0.0028-0.0087 in)
Camshaft Alignment ............... 0.01 mm (0.0004 in)
Cam Height (Intake) ............... 28.80 mm (1.1339 in)
Cam Height (Exhaust) ............... 29.00 mm (1.1417 in)
Piston Pin O.D ............... 22.002-22.011 mm (0.8662-0.8666 in)
Piston Pin Bore ............... 22.000-22.013 mm (0.8661-0.8687 in)
Piston Pin to Small end Bushing Clearance ............... 0.014-0.038 mm (0.0006-0.0015 in)
Second Ring Groove Clearance ............... 0.085-0.112 mm (0.0033-0.0044 in)
Oil Ring Groove Clearance ............... 0.020-0.055 mm (0.0008-0.0021 in)
Top Ring End Gap ............... 0.15-0.25 mm (0.0059-0.0098 in)
Second Ring End Gap ............... 0.40-0.55 mm (0.016-0.021 in)
Oil Ring End Gap ............... 0.25-0.45 mm (0.0098-0.0170 in)
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