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Kubota V1305 Engine

General Technical Data

Kubota V1305 Engine Specifications

Engine Model .......... Kubota V1305
Engine Type .......... Vertical, water-cooled, 4-stroke diesel
Number of cylinders .......... Four
Bore, mm (in.) .......... 76.0 (2.99)
Stroke, mm (in.) .......... 73.6 (2.90)
Total displacement, cm3 (cu. in.) .......... 1335 (81.5)
Gross power, kw (hp) .......... 28.7 (38.5)
Net power, kw (hp) .......... 25.7 (34.5)
Maximum speed, rpm .......... 3800
Idling speed, rpm .......... 900
Maximum torque, Nm (lb-ft) .......... 77.4 (57.1)
Torque speed, rpm .......... 2400
Combustion Chamber .......... Spherical type
Direction of rotation .......... Counter-clockwise
Compression ratio .......... 24:1
Firing order .......... 1-3-4-2

Fuel System

Fuel injection pump .......... Bosch MD type mini pump
Injection nozzle .......... Mini nozzle
Injection timing, deg (rad) .......... 16.5 (0.29) 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, 1.2 kW
Starting support device .......... By glow plug in combustion chamber
Battery .......... 12V, 65 AH
Charging Alternator .......... 12V, 360 W

Dimensions

Length, mm (in.) .......... 583.8 (22.98)
Width, mm (in.) .......... 396 (15.59)
Height, mm (in.) .......... 613.7 (24.16)
Dry weight, kg (lbs.) .......... 106 (233.7)

Kubota V1305 Maintenance Data

Fuel type .......... Diesel fuel No. 2-D
Engine oil type .......... SAE 10W-40
Engine oil capacity, L (qts) .......... 6.7 (7.3)
Coolant capacity, L (qts) .......... 5.0 (5.5)
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 V1305 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.)
Piston Pin Bore I.D. .......... 22.000-22.013 mm (0.8661-0.8667 in.)
Piston Pin to Small End Bushing, Clearance .......... 0.014-0.038 mm (0.00055-0.00150 in.)
Piston Pin O.D. .......... 22.002-22.011 mm (0.8662-0.8666 in.)
Small End Bushing I.D. .......... 22.025-22.040 mm (0.8671-0.8677 in.)
Crankshaft to Crankshaft Bearing 1, Oil Clearance .......... 0.034-0.114 mm (0.0013-0.0045 in.)
Crankshaft to Crankshaft Bearing 2, Oil Clearance .......... 0.034-0.095 mm (0.0013-0.0037 in.)
Crankshaft to Crankshaft Bearing 3, Oil Clearance .......... 0.034-0.098 mm (0.0013-0.0039 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 Seat, Angle (Intake) .......... 1.047 rad (60 degrees)
Valve Seat, Angle (Exhaust) .......... 0.785 rad (45 degrees)
Valve Seat, Width .......... 2.12 mm (0.0835 in.)
Valve Timing (Intake Valve), Open .......... 0.24 rad (14°) before T.D.C.
Valve Timing (Intake Valve), Close .......... 0.52 rad (30°) after B.D.C.
Valve Timing (Exhaust Valve), Open .......... 0.96 rad (55°) before B.D.C.
Valve Timing (Exhaust Valve), Close .......... 0.24 rad (14°) after T.D.C.

Idle Gear

Idle Gear 1, Side Clearance .......... 0.20-0.51 mm (0.0079-0.0201 in.)
Idle Gear 2, Side Clearance .......... 0.20-0.51 mm (0.0079-0.0201 in.)
Governor Gear to Injection Pump Gear, Backlash .......... 0.030-0.117 mm (0.0012-0.0046 in.)

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)
Fan drive pulley screw (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)
Nozzle holder, Nm (lb-ft) .......... 34.3-39.2 (25.3-28.9)

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