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Kubota D1105T Engine

Kubota D1105T Engine Technical Data

General Specifications

Engine Model ..................... Kubota D1105T
Engine Type ..................... 4-cycle vertical turbocharged diesel
Number of cylinders ..................... 3
Cylinder bore, mm (in) ..................... 78.0 (3.07)
Piston stroke, mm (in) ..................... 78.4 (3.09)
Total displacement, L (cu.in) ..................... 1.12 (68.6)
Gross power, kw (hp) ..................... 26.1 (35.0)
Net power, kw (hp) ..................... 23.5 (31.5)
Maximum speed, rpm ..................... 3200
Idling speed, rpm ..................... 850-950
Maximum torque, Nm (lb-ft) ..................... 86.1 (63.4)
Torque speed, rpm ..................... 2000
Aspiration Type ..................... Turbocharged
Combustion Chamber ..................... Spherical type
Direction of rotation ..................... Counter-clockwise
Compression ratio ..................... 22.5:1
Firing order ..................... 1-2-3
Lubricating system ..................... Forced lubrication by pump
Oil pressure indicating ..................... Electrical type switch
Oil filter type ..................... Full flow cartridge, paper element
Engine oil capacity, L (qts) ..................... 4.0 (4.23)
Starting system ..................... Electric starting with starter
Electrical system rating, Volts ..................... 12

Fuel System

Fuel injection pump ..................... Bosch type
Injection nozzle ..................... Bosch throttle type
Injection timing, deg (rad) ..................... 16.5 (0.29) before T.D.C.
Injection pressure, kPa (psi) ..................... 13730 (1990)
Governor type ..................... Centrifugal, mechanical

Dimensions and Weight

Overall length, mm (in) ..................... 498 (19.7)
Overall width, mm (in) ..................... 433 (17.1)
Overall height, mm (in) ..................... 626 (24.7)
Dry weight, kg (lbs) ..................... 97 (214)

Kubota D1105T Maintenance Data

Engine Oil

Engine oil type ..................... SAE30, SAE 10W, SAE 10W-30
Oil classification (API service) ..................... CD, CE, or higher
Engine oil capacity (4" oil pan), L (qts) ..................... 4.0 (4.23)
Engine oil capacity (5" oil pan), L (qts) ..................... 5.1 (5.4)

Service Intervals

Check Fuel Pipes ..................... Every 50 hours
Service Air Filter ..................... Every 100 hours
Clean Fuel Filter ..................... Every 100 hours
Check Battery ..................... Every 100 hours
Check Belt Tension ..................... Every 100 hours
Change Engine Oil (4" Oil Pan) ..................... Every 150 hours
Replace Oil Filter (4" Oil Pan) ..................... Every 150 hours
Change Engine Oil (5" Oil Pan) ..................... Every 200 hours
Replace Oil Filter (5" Oil Pan) ..................... Every 200 hours
Replace Fuel Filter ..................... Every 400 hours
Clean Radiator Fins ..................... Every 500 hours
Check Valve Clearance ..................... Every 800 hours
Replace Air Filter ..................... Every 1000 hours
Check Injection Nozzles ..................... Every 1500 hours
Change Engine Coolant ..................... Every 1500 hours

Kubota D1105T Service Specifications

Cylinder Block

Cylinder Liner I.D ..................... 78.000-78.019 mm (3.0709-3.0716 in)
Cylinder (Oversized) ..................... 78.500-78.519 mm (3.0906-3.0913 in)
Crankshaft to Bearing 1 Clearance ..................... 0.034-0.114 mm (0.0013-0.0045 in)
Crankshaft 1 O.D ..................... 47.934-47.950 mm (1.8872-1.8878 in)
Crankshaft Bearing 1 I.D ..................... 47.984-48.084 mm (1.8891-1.8917 in)
Crankshaft to Bearing 2 Clearance ..................... 0.034-0.095 mm (0.0013-0.0037 in)
Crankshaft 2 O.D ..................... 47.934-47.950 mm (1.8872-1.8878 in)
Crankshaft Bearing 2 I.D ..................... 47.984-48.029 mm (1.8891-1.8909 in)
Crankshaft to Bearing 3 Clearance ..................... 0.034-0.098 mm (0.0013-0.0039 in)
Crankshaft 3 O.D ..................... 51.921-51.940 mm (2.0441-2.0449 in)
Crank Bearing 3 I.D ..................... 51.974-52.019 mm (2.0462-2.0480 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)
Crank Pin to Bearing Clearance ..................... 0.029-0.091 mm (0.0011-0.0036 in)
Connecting Rod Alignment ..................... 0.05 mm (0.0020 in)
Connecting Rod Small End Bushing I.D ..................... 22.025-22.040 mm (0.8671-0.8677 in)

Cylinder Head and Valves

Cylinder Head Surface Flatness ..................... 0.05 mm (0.0019 in)
Top Clearance ..................... 0.55-0.75 mm (0.0217-0.0295 in)
Valve Clearance (Cold) ..................... 0.145-0.185 mm (0.0057-0.0072 in)
Valve Seat Width (Intake) ..................... 2.12 mm (0.0835 in)
Valve Seat Width (Exhaust) ..................... 2.12 mm (0.0835 in)
Valve Seat Angle (Intake) ..................... 1.047 rad. (60 deg)
Valve Seat Angle (Exhaust) ..................... 0.785 rad. (45 deg)
Valve Face Angle (Intake) ..................... 1.047 rad. (60 deg)
Valve Face Angle (Exhaust) ..................... 0.785 rad. (45 deg)
Valve Recessing ..................... 0.05-0.25 mm (0.0020-0.0060 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 Stem to Guide Clearance ..................... 0.035-0.065 mm (0.0014-0.0025 in)
Valve Opening (Intake) ..................... 0.38 rad (22 deg) before T.D.C.
Valve Closing (Intake) ..................... 0.82 rad (47 deg) after B.D.C.
Valve Opening (Exhaust) ..................... 0.91 rad (52 deg) before B.D.C.
Valve Closing (Exhaust) ..................... 0.30 rad (17 deg) after T.D.C.
Valve Spring Free Length ..................... 37.0-37.5 mm (1.457-1.476 in)
Rocker Arm Shaft to Rocker Arm Clearance ..................... 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)
Camshaft Journal O.D ..................... 35.934-35.050 mm (1.4147-1.3799 mm)
Camshaft Bearing I.D ..................... 36.000-36.025 mm (1.4173-1.4183 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 and Piston Rings

Piston Pin O.D ..................... 22.002-22.011 mm (0.8662-0.8666 in)
Piston Pin Bore ..................... 22.000-22.013 mm (0.8661-0.8687 in)
Piston Pin to Small end Bushing Clearance ..................... 0.014-0.038 mm (0.0006-0.0015 in)
Second Ring Groove Clearance ..................... 0.085-0.112 mm (0.0033-0.0044 in)
Oil Ring Groove Clearance ..................... 0.020-0.055 mm (0.0008-0.0021 in)
Top Ring End Gap ..................... 0.20-0.35 mm (0.0079-0.0138 in)
Second Ring End Gap ..................... 0.40-0.55 mm (0.0157-0.0217 in)
Oil Ring End Gap ..................... 0.30-0.55 mm (0.0118-0.0217 in)

Tightening Torque Specs

Cylinder head cover cap nuts (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)
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 screws (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)
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 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