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Kubota D1005 Engine

General Technical Data

Kubota D1005 Engine Specifications

Engine Model .......... Kubota D1005
Engine Type .......... Vertical, water-cooled, 4-cycle diesel
Number of cylinders .......... 3
Bore, mm (in.) .......... 76.0 (2.99)
Stroke, mm (in.) .......... 73.6 (2.90)
Total displacement, cm3 (cu. in.) .......... 1001 (61.1)
Gross power, kw (hp) .......... 20.4 (27.3)
Net power, kw (hp) .......... 16.8 (22.5)
Maximum speed, rpm .......... 3800
Idling speed, rpm .......... 900
Maximum torque, Nm (lb-ft) .......... 58.4 (43.0)
Torque speed, rpm .......... 2400
Combustion Chamber .......... Spherical type (E-TVCS)
Direction of rotation .......... Counter-clockwise
Compression ratio .......... 24:1
Firing order .......... 1-2-3

Fuel System

Fuel injection pump .......... Bosch MD type mini pump
Injection nozzle .......... Mini nozzle
Injection timing, deg (rad) .......... 18-21 (0.31-0.37) before T.D.C.
Injection pressure, MPa (psi) .......... 13.7 (1990)
Governor .......... All speed mechanical governor

Lubricating System

Lubricating system .......... Forced lubrication by trochoid pump
Oil pressure indicating .......... Electrical type switch
Oil filter .......... Full flow paper filter (cartridge type)

Electrical System

Starting system .......... Electric starting with starter
Starter Rating .......... 12V, 1.0 kW
Starting support device .......... By glow plug in combustion chamber
Battery .......... 12V, 60 AH
Charging Alternator .......... 12V, 150W

Dimensions

Length, mm (in.) .......... 498.0 (20.0)
Width, mm (in.) .......... 397 (15.6)
Height, mm (in.) .......... 609.0 (24.0)
Dry weight, kg (lbs.) .......... 89 (196.2)

Kubota D1005 Maintenance Data

Fuel type .......... Diesel fuel No. 2-D
Engine oil type .......... SAE 10W-40
Engine oil capacity, L (qts) .......... 5.1 (5.3)
Coolant capacity, L (qts) .......... 3.0 (3.1)
Oil filter change interval .......... Every 200 hours
Oil change interval .......... Every 200 hours
Fuel filter change interval .......... Every 400 hours
Fan belt tension (Deflection) .......... 7-9 mm (0.28-0.35 in.)

Kubota D1005 Service Specifications

Cylinder Block

Cylinder Liner I.D. .......... 76.000-76.019 mm (2.9921-2.9929 in.)
Cylinder (Oversized) .......... 76.500-76.519 mm (3.0118-3.0126 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 .......... 29.0 mm (1.1417 in.)
Camshaft Journal to Cylinder Block Bore, Oil Clearance .......... 0.050-0.091 mm (0.00197-0.00358 in.)
Camshaft Journal O.D. .......... 35.934-35.950 mm (1.4147-1.4153 in.)
Cylinder Block Bore I.D. .......... 36.000-36.025 mm (1.4173-1.4183 in.)
Connecting Rod Alignment .......... 0.05 mm (0.0020 in.)
Crankshaft Alignment .......... 0.02 mm (0.0008 in.)
Piston Ring Gap, Top Ring .......... 0.30-0.45 mm (0.0118-0.0177 in.)
Piston Ring Gap, Second Ring .......... 0.30-0.45 mm (0.0118-0.0177 in.)
Piston Ring Gap, Oil Ring .......... 0.25-0.40 mm (0.0098-0.0157 in.)

Cylinder Head

Valve Clearance (Cold) .......... 0.145-0.185 mm (0.00571-0.00728 in.)
Compression Pressure .......... 3.72-4.12 MPa (539-596 psi)
Top Clearance .......... 0.55-0.70 mm (0.0217-0.0276 in.)
Cylinder Head Surface Flatness .......... 0.05 mm (0.0020 in.)
Valve Recessing Intake and Exhaust .......... 0.05-0.25 mm (0.0020-0.0098 in.)
Valve Stem to Valve Guide, Clearance .......... 0.035-0.065 mm (0.0014-0.0025 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 Face, Angle (Intake) .......... 1.047 rad (60 degrees)
Valve Face, Angle (Exhaust) .......... 0.785 rad (45 degrees)
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.)
Tappet O.D. .......... 19.959-19.980 mm (0.7858-0.7866 in.)
Tappet Guide I.D. .......... 20.000-20.021 mm (0.7874-0.7882 in.)

Timing Gear

Crank Gear to Idle Gear 1, Backlash .......... 0.032-0.115 mm (0.0013-0.0045 in.)
Idle Gear 1 to Cam Gear, Backlash .......... 0.036-0.114 mm (0.0014-0.0045 in.)
Idle Gear 1 to Injection Pump Gear, Backlash .......... 0.034-0.116 mm (0.0013-0.0046 in.)
Idle Gear 1 to Idle Gear 2, Backlash .......... 0.033-0.117 mm (0.0013-0.0046 in.)
Idle Gear 2 to Governor Gear, Backlash .......... 0.030-0.117 mm (0.0012-0.0046 in.)

Fuel System

Injection Pump, Injection Timing (3000 rpm) .......... 0.30-0.33 rad (17-19°) before T.D.C.
Injection Pump, Injection Timing (3600 rpm) .......... 0.35-0.39 rad (20-22°) before T.D.C.
Pump Element, Fuel Tightness .......... 13.73 MPa (1991 psi)
Delivery Valve, Fuel Tightness .......... 13.73-12.75 MPa (1991-1849 psi)
Injection Nozzle, Injection Pressure .......... 13.73-14.71 MPa (1991-2134 psi)
Injection Nozzle Valve Seat (Tightness) .......... If pressure is 12.8 MPa, the valve seat must be fuel tightness

Tightening Torque Specs

Cylinder head cover screw (M7x1.0), Nm (lb-ft) .......... 6.9-8.8 (5.1-6.5)
Cylinder head screw (M10x1.25), Nm (lb-ft) .......... 63.7-68.6 (47.0-50.6)
Main bearing case screw 1 (M8x1.25), Nm (lb-ft) .......... 29.4-34.3 (21.7-25.3)
Main bearing case screw 2 (M9x1.25), Nm (lb-ft) .......... 49.0-53.9 (36.2-39.8)
Flywheel screw (M10x1.25), Nm (lb-ft) .......... 53.9-58.8 (39.8-43.4)
Connecting rod screw (M8x1.0), Nm (lb-ft) .......... 41.2-46.1 (30.4-34.0)
Rocker arm bracket nuts (M7x1.0), Nm (lb-ft) .......... 21.6-26.5 (15.9-19.5)

KUBOTA TRACTORS TROUBLESHOOTING
L235	L2501	L2550	L275	L3110
L3301	L35	L3710	L3901	L4310
L5030	M4700	M5700	M6040	M6800
M8200	M8540	M9000	MX5100	MX5200