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Kubota V1205 Engine

General Technical Data

Kubota V1205 Engine Specifications

Engine Model .......... Kubota V1205
Engine Type .......... Vertical, water-cooled, 4-stroke diesel
Number of cylinders .......... 4
Bore, mm (in.) .......... 72.0 (2.83)
Stroke, mm (in.) .......... 73.6 (2.90)
Total displacement, cm3 (cu. in.) .......... 1198 (73.1)
Gross power, kw (hp) .......... 32.8 (44.0)
Net power, kw (hp) .......... 29.8 (40.0)
Maximum speed, rpm .......... 3600
Idling speed, rpm .......... 600
Maximum torque, Nm (lb-ft) .......... 89.7 (66.2)
Torque speed, rpm .......... 2400
Combustion Chamber .......... Spherical type
Direction of rotation .......... Counter-clockwise
Compression ratio .......... 22:1
Firing order .......... 1-3-4-2

Fuel System

Fuel injection pump .......... Bosch MD type mini pump
Injection nozzle .......... Mini nozzle
Injection timing (Without timer), deg (rad) .......... 18-20 (0.31-0.35) before T.D.C.
Injection timing (With timer), deg (rad) .......... 8-10 (0.14-0.17) before T.D.C.
Injection pressure, MPa (psi) .......... 13.73 (1991)
Governor .......... Centrifugal mechanical governor

Lubricating System

Lubricating system .......... Forced lubrication by 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, 1.2 kW
Starting support device .......... By glow plug in combustion chamber
Battery .......... 12V, 70 AH
Dynamo for charging .......... 12V, 360W

Dimensions

Length, mm (in.) .......... 565 (22.4)
Width, mm (in.) .......... 400 (15.8)
Height, mm (in.) .......... 600 (23.8)
Dry weight, kg (lbs.) .......... 110.0 (242.5)

Kubota V1205 Maintenance Data

Fuel type .......... Diesel fuel No. 2-D
Engine oil type .......... SAE 10W-40
Engine oil capacity, L (qts) .......... 6.0 (6.34)
Coolant capacity, L (qts) .......... 4.5 (4.8)
Oil filter change interval .......... Every 200 hours
Oil change interval .......... Every 200 hours
Fuel filter change interval .......... Every 400 hours

Kubota V1205 Service Specifications

Cylinder Block

Cylinder Liner I.D. .......... 72.000-72.019 mm (2.8346-2.8354 in.)
Oversized Cylinder Liner I.D. - + 0.5 mm (+ 0.0197 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 Bore .......... 22.000-22.013 mm (0.8661-0.8687 in.)
Clearance between Compression Ring 2 and Ring Groove .......... 0.085-0.112 mm (0.0033-0.0044 in.)
Clerance between Oil Ring and Ring Groove .......... 0.020-0.055 mm (0.0008-0.0021 in.)
Connecting Rod Alignment .......... 0.05 mm (0.0020 in.)
Clearance between Piston Pin and Small end Bushing .......... 0.014-0.038 mm (0.0006-0.0015 in.)
Crankshaft Alignment .......... 0.02 mm (0.0008 in.)
Crankshaft Side Clearance .......... 0.15-0.31 mm (0.0059-0.0122 in.)

Cylinder Head

Valve Clearance (Cold) .......... 0.145-0.185 mm (0.0057-0.0072 in.)
Valve Seat Width (Intake/Exhaust) .......... 2.12 mm (0.0835 in.)
Valve Recessing .......... 0.05-0.25 mm (0.0020-0.0060 in.)
Clearance between Valve Stem and Valve Guide .......... 0.035-0.065 mm (0.0014-0.0025 in.)
Clearance between Rocker Arm Shaft and Rocker Arm .......... 0.016-0.045 mm (0.0006-0.0018 in.)
Clearance between Tappet and Guide .......... 0.020-0.062 mm (0.0008-0.0024 in.)

Fuel System

Injection Timing (w/o Timer) (3000/3600 rpm) ........ 0.31-0.35 rad. (18-20°) / 0.37-0.40 rad. (21-23°) Before T.D.C
Injection Timing (w/ Timer), (3000/3600 rpm) ........ 0.14-0.17 rad. (8-10°) / 0.16-0.19 rad. (9-11°) Before T.D.C
Fuel Tightness of Delivery Valve .......... 14.7-13.7 MPa (2133-1990 psi)
Fuel Injection Pressure .......... 13.73-14.71 MPa (1991-2133 psi)

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)
Idle gear shaft screws (M6x1.0), Nm (lb-ft) .......... 9.8-11.3 (7.2-8.3)
Crankshaft end bolt (M14x1.5), Nm (lb-ft) .......... 235.4-245.2 (173.6-180.8)
Bearing case cover mounting screw (M6x1.0), Nm (lb-ft) .......... 9.8-11.3 (7.2-8.3)
Glow plugs (M8x1.0), Nm (lb-ft) .......... 7.8-14.7 (5.8-10.8)
Nozzle holder assembly (M20x1.5), Nm (lb-ft) .......... 49.0-68.6 (36.2-50.6)

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