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Kubota D1402 Specifications
The Kubota D1402 is a 1.4 L (1,395 cc, 85.1 cubic inches) 3-cylinder
water-cooled naturally aspirated vertical diesel engine manufactured by
Kubota.
The Kubota D1402 engine has a spherical type сombustion сhamber, Bosch
K-type mini fuel injection pump, and the DN12 SD12 injection nozzle. The
cylinder bore and the piston stroke are 85.0 mm (3.35 in) and 82.0 mm
(3.23 in), appropriately. The engine features a high-durability
tunnel-type cylinder block with dry-type cylinder liners.
The D1402 diesel engine produced 32.5 PS (23.9 kW; 32.0 HP) at 2,800 rpm
of maximum power.
Engine code identification:
D - Three-cylinder,
14 - Approximate displacement 1400 cc.
| General Technical Data |
Engine Model ............... Kubota D1402
Engine Type ............... 4-Stroke 3-cylinder water-cooled diesel
Number of Cylinders ............... 3
Total displacement, L (cu.in) ............... 1.39 (85.13)
Cylinder Bore, mm (in) ............... 85.0 (3.25)
Piston Stroke, mm (in) ............... 82.0 (3.23)
Rated Engine Power, hp (kW) ............... 32.0 (23.9)
Rated Engine Speed, rpm ............... 2800
Maximum Engine Speed, rpm ............... 3000
Idle Speed, rpm ............... 800
Maximum Torque, Nm (lb-ft) ............... 94.6 (70.1)
Torque Speed, rpm ............... 1600
Aspiration Type ............... Naturally aspirated
Compression Ratio ............... 21:1
Firing Order ............... 1-2-3
Combustion Chamber ............... Spherical type
Direction of Rotation ............... Counter-clockwise
Lubricating System ............... Forced lubrication by pump
Oil Filter Type ............... Full flow cartridge, paper element
Engine Oil Capacity, L (qts) ............... 6.2 (6.5)
Starting System ............... Electric starting with starter
Electrical System Rating, Volts ............... 12
| Fuel System |
Fuel Injection Pump ............... Bosch K type mini
Injection Nozzle ............... DN12 SD12
Governor Type ............... Centrifugal ball, mechanical
Injection Pressure, kPa (psi) ............... 13700-14700 (1991-2133)
Injection Timing, deg (rad) ............... 23-25 (0.401-0.436) before TDC
| Dimensions and Weight |
Overall Length, mm (in) ............... 568 (22.4)
Overall Width, mm (in) ............... 512 (20.2)
Overall Height, mm (in) ............... 638.5 (25.2)
Dry Weight, kg (lbs) ............... 148.2 (327)
| Cylinder Block |
Cylinder liner I.D (Standard) ............... 85.000-85.022 mm (3.3465-3.3473 in)
Cylinder liner I.D (Wear limit) ............... 85.15 mm (3.3524 in)
Crankshaft alignment ............... 0.02 mm (0.0008 in)
Crankshaft journal O.D ............... 51.921-51.940 mm (2.0441-2.0449 in)
Crankshaft bearing I.D ............... 51.980-52.039 mm (2.0465-2.0488 in)
Crankshaft journal to bearing clearance ............... 0.040-0.118 mm (0.0016-0.0046 in)
Crankpin O.D ............... 43.959-43 975 mm (1.7307-1.7313 in)
Crankpin bearing I.D ............... 44.010-44.052 mm (1.7327-1.7343 in)
Crankpin to bearing clearance ............... 0.035-0.093 mm (0.0014-0.0037 in)
Crankshaft end play ............... 0.15-0.31 mm (0.0059-0.0122 in)
Connecting rod small end bushing I.D ............... 23.025-23.040 mm (0.9065-0.9071 in)
Connecting rod small end parent bore diameter ............... 26.000-26.013 mm (1.0236-1.0241 in)
Connecting rod alignment ............... 0.05 mm (0.002 in)
| Cylinder Head and Valves |
Cylinder head surface flatness ............... 0.05 mm (0.0020 in)
Cylinder head gasket thickness ............... 1.30-1.60 mm (0.0512-0.0630 in)
Top clearance ............... 0.7-0.9 mm (0.0276-0.0354 in)
Valve seat width ............... 2.1 mm (0.0827 in)
Valve seat angle ............... 0.785 rad (45 deg)
Valve stem O.D (Intake) ............... 7.960-7.975 mm (0.3134-0.3140 in)
Valve stem O.D (Exhaust) ............... 7.960-7.975 mm (0.3134-0.3140 in)
Valve guide I.D (Intake) ............... 8.015-8.030 mm (0.3156-0.3161 in)
Valve guide I.D (Exhaust) ............... 8.015-8.030 mm (0.3156-0.3161 in)
Valve stem to guide clearance ............... 0.04-0.07 mm (0.0016-0.0028 in)
Valve recessing ............... 1.1-1.3 mm (0.0433-0.0512 in)
Valve clearance (Intake) ............... 0.18-0.22 mm (0.0071-0.0087 in)
Valve clearance (Exhaust) ............... 0.18-0.22 mm (0.0071-0.0087 in)
Valve spring free length ............... 41.7-42.2 mm (1.6417-1,6614 in)
Rocker arm shafts O.D ............... 13.973-13.984 mm (0.5501-0.5506 in)
Rocker arm bushing I.D ............... 14.002-14.043 mm (0.5513-0.5529 in)
Rocker arm shafts to bushing clearance ............... 0.018-0.070 mm (0.0007-0.0028 in)
Camshaft bearing journal O.D ............... 39.934-39.950 mm (1.5722-1.5728 in)
Camshaft bearing I.D ............... 40.000-40.025 mm (1.5748-1.5758 in)
Camshaft journal to bearing clearance ............... 0.050-0.091 mm (0.0020-0.0036 in)
Camshaft alignment ............... 0.01 mm (0.00039 in)
Cam height (Intake) ............... 33.36-33.31 mm (1.3134-1.3114 in)
Cam height (Exhaust) ............... 33.36-33.31 mm (1.3134-1.3114 in)
| Piston and Piston Rings |
Piston pin O.D ............... 23.002-23.011 mm (0.9055-0.9059 in)
Piston pin bore I.D (Standard) ............... 23.000-23,013 mm (0,9055-0.9060 in)
Piston pin bore I.D (Wear limit) ............... 23.053 mm (0.9076 in)
Piston pin to small end bushing clearance ............... 0.014-0.038 mm (0.0006-0.0015 in)
Top ring gap ............... 0.30-0.45 mm (0.012-0.017 in)
Second ring gap ............... 0.30-0.45 mm (0.012-0.017 in)
Oil ring gap ............... 0.25-0.45 mm (0.0099-0.017 in)
Second ring groove clearance ............... 0.0930-0.120 mm (0.00367-0.00472 in)
Oil ring groove clearance ............... 0.020-0.052 mm (0.00079-0.0020 in)
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