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Kubota V1505 Engine

General Technical Data

Kubota V1505 Engine Specifications

Engine Model .......... Kubota V1505
Engine Type .......... Vertical, water-cooled, 4-stroke diesel
Number of cylinders .......... 4
Bore, mm (in.) .......... 78.0 (3.07)
Stroke, mm (in.) .......... 78.4 (3.09)
Total displacement, cm3 (cu. in.) .......... 1498 (91.4)
Gross power, kw (hp) .......... 34.7 (46.5)
Net power, kw (hp) .......... 31.3 (42.0)
Maximum speed, rpm .......... 3200
Idling speed, rpm .......... 850-950
Maximum torque, Nm (lb-ft) .......... 114.7 (84.6)
Torque speed, rpm .......... 2000
Combustion Chamber .......... Spherical type
Direction of rotation .......... Counter-clockwise
Compression ratio .......... 22.5:1
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, 56 AH
Dynamo for charging .......... 12V, 360W

Dimensions

Length, mm (in.) .......... 591.3 (23.3)
Width, mm (in.) .......... 398 (15.7)
Height, mm (in.) .......... 629.3 (24.2)
Dry weight, kg (lbs.) .......... 114.0 (251.3)

Kubota V1505 Maintenance Data

Fuel type .......... Diesel fuel No. 2-D
Engine oil type .......... SAE 10W-30
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

Kubota V1505 Service Specifications

Cylinder Block

Cylinder Liner I.D. .......... 78.000-78.019 mm (3.0709-3.0716 in.)
Oversized Cylinder Liner I.D. - + 0.5 mm (+ 0.0197 in.)
Oil Clearance of Camshaft .......... 0.050-0.091 mm (0.0020-0.0036 in.)
Camshaft Journal O.D. .......... 35.934-35.050 mm (1.4147-1.3799 in.)
Camshaft Bearing I.D. .......... 36.000-36.025 mm (1.4173-1.4183 in.)
Crank Gear to Idle Gear 1 .......... 0.032-0.115 mm (0.0013-0.0045 in.)
Idle Gear 1 to Idle Gear 2 .......... 0.0033-0.117 mm (0.0013-0.0046 in.)
Idle Gear 2 to Governor Gear .......... 0.030-0.117 mm (0.0012-0.0046 in.)
Idle Gear Side Clearance Idle Gear 1 .......... 0.20-0.51 mm (0.0079-0.0200 in.)
Idle Gear Side Clearance Idle Gear 2 .......... 0.20-0.51 mm (0.0079-0.0200 in.)
Ring Gap (Compression Ring 1) .......... 0.20-0.35 mm (0.0079-0.0138 in.)
Ring Gap (Compression Ring 2) .......... 0.40-0.55 mm (0.0157-0.0217 in.)
Ring Gap (Oil Ring) .......... 0.30-0.55 mm (0.0118-0.0217 in.)
Connecting Rod Alignment .......... 0.05 mm (0.0020 in.)
Crankshaft Alignment .......... 0.02 mm (0.0008 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.)
Crankshaft Side Clearance .......... 0.15-0.31 mm (0.0059-0.0122 in.)

Cylinder Head

Cylinder Head Surface Flatness .......... 0.05 mm (0.0019 in.)
Top Clearance .......... 0.55-0.75 mm (0.0217-0.0295 in.)
Valve Spring, Free Length .......... 37.0-37.5 mm (1.457-1.476 in.)
Valve Spring, Setting Load / Setting Length .......... 117.4 N / 31.0 mm (26.4 lbs / 1.22 in.)
Valve Spring, Tilt .......... 1.0 mm (0.039 in.)
Clearance between Rocker Arm Shaft and Rocker Arm .......... 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.)
Clearance between Tappet and Guide .......... 0.020-0.062 mm (0.0008-0.0024 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.)

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)
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)
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)
Oil switch taper screw (PT1/8), Nm (lb-ft) .......... 14.7-19.6 (10.8-14.5)
Injection pipe retaining nuts (M12x1.5), Nm (lb-ft) .......... 24.5-34.3 (18.1-25.3)
Overflow pipe assembly retaining nuts (M12x1.5), Nm (lb-ft) .......... 19.6-24.5 (14.5-18.1)

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