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Mitsubishi K3E Engine

General Technical Data

Mitsubishi K3E Engine Specifications

Engine Model ............... Mitsubishi K3E
Engine Type ............... 4 Stroke, 3-Cylinder Indirect Injection Diesel
Number of Cylinders ............... 3
Displacement, L (cu.in) ............... 1.061 (64.78)
Engine Bore, mm (in) ............... 76.0 (2.99)
Engine Stroke, mm (in) ............... 78.0 (3.07)
Aspiration ............... Natural
Maximum Engine Power, hp (kW) ............... 25.0 (18.4)
Rated Engine Speed, rpm ............... 2800
Compression ............... 18:1
Firing Order ............... 1-3-2
Coolant Capacity, L (qts) ............... 5.7 (6.0)
Cooling Fan ............... 5 blades
Fan belt deflection, mm (in) ............... 10-12 (0.39-0.47)
Electrical System Rating, Volts ............... 12, Negative Ground
Charging System ............... Alternator
Alternator Rating, Amp ............... 40
Batteries Cold Cranking Capacity, Amps ............... 410

Fuel System

Fuel System ............... Indirect Injection
Fuel Pump Type ............... Electro-magnetic Diaphram Type
Injection Pump Type ............... Bosch M-type
Injection Pump Model ............... ND-PFR3M
Injection Nozzle Opening Pressure, kPa (psi) ............... 11800-12700 kPa (1706-1848)
Injection Timming ............... 17 deg BTDC
Fuel Tank Capacity, L (gal) ............... 20.0 (5.3)

Dimensions

Length, mm (in) ............... 500 (19.8)
Width, mm (in) ............... 450 (17.8)
Height, mm (in) ............... 590 (23.3)
Net weight, kg (lbs) ............... 90.0 (198)

Mitsubishi K3E Maintenance Data

Engine Oil

Engine Oil Type (Summer) ............... SAE 15W-40
Engine Oil Type (Winter) ............... SAE 5W-20, 10W-30
Oil Classification ............... API CF or CF-4
Oil Capacity, L (qts) ............... 3.5 (3.7)

Cylinder Block and Valves

Cylinder Bore (Maximum), mm (in) ............... 76.08 (3.0071)
Compression Between Each Cylinder, kPa (psi) ............... 250 (36)
Intake Valve Clearance (Cold), mm (in) ............... 0.25 (0.0098)
Exhaust Valve Clearance (Cold), mm (in) ............... 0.25 (0.0098)

Service Intervals

Clean Fuel Filter Element ............... Every 100 hours
Change Engine Oil ............... Every 250 hours
Change Oil Filter ............... Every 250 hours
Change Fuel Filter Element ............... Every 500 hours
Check and Adjust Injection Pressure ............... Every 500 hours
Check and Adjust Valve Clearance ............... Every 500 hours

Mitsubishi K3E Service Specifications

Cylinder Head and Valves

Cylinder Head Warp (Maximum), mm (in) ............... 0.10 (0.004)
Cylinder Head Gasket Material ............... Carbongraphitc with Stainless Steel Grommets
Intake Valve Tappet Clearance (Cold), mm (in) ............... 0.25 (0.009)
Intake Valve Face Angle ............... 45 degrees
Intake Valve Head Edge Thickness (minimum), mm (in) ............... 0.5 (0.019)
Intake Valve Recession Below Head Surface, mm (in) ............... 0.5 (0.019)
Intake Valve Stem to Guide Clearance, mm (in) ............... 0.10 (0.003)
Exhaust Valve Tappet Clearance (Cold), mm (in) ............... 0.25 (0.009)
Exhaust Valve Face Angle ............... 45 degrees
Exhaust Valve Head Edge Thickness (minimum), mm (in) ............... 0.5 (0.019)
Exhaust Valve Recession Below Head Surface, mm (in) ............... 0.5 (0.019)
Exhaust Valve Stem to Guide Clearance, mm (in) ............... 0.15 (0.005)
Valve Springs Free Length, mm (in) ............... 43.0 (1.69)

Cylinder Block

Cylinder Block Type ............... Sleeved
Cylinder Block Material ............... Cast Iron
Connecting Rod Bushing ID, mm (in) ............... 23.0 (0.90)
Connecting Rod Bearing ID, mm (in) ............... 42.0 (1.65)
Connecting Rod Bearing Oil Clearance, mm (in) ............... 0.15 (0.006)
Connecting Rod Bend and Distortion (Maximum), mm (in) ............... 0.15 (0.006)
Connecting Rod Bearing Clearance (Service Limit), mm (in) ............... 0.15 (0.005)
Camshaft Journal to Cylinder Block or Bush Clearance (Maximum), mm (in) ............... 0.15 (0.006)
Camshaft Lobe Height, mm (in) ............... 44.0 (1.73)
Crankshaft Main Journals Diameter, mm (in) ............... 52.0 (2.04)
Crankshaft Connecting Rod Journals Diameter, mm (in) ............... 42.0 (1.65)
Crankshaft Main Bearing Clearance (Service Limit), mm (in) ............... 0.10 (0.003)
Crankshaft End Play, mm (in) ............... 0.05-0.205 (0.0019-0.008)

Piston and Piston Rings

Piston Type ............... Solid
Piston Material ............... Aluminium Alloy
Outside Diameter to Piston Skirt, mm (in) ............... 76.0 (2.99)
Piston Pin Type ............... Full Floating
Piston Pin Diameter, mm (in) ............... 23.0 (0.90)
Piston Ring Gap (Compression Rings), mm (in) ............... 0.15-0.4 (0.006-0.016)
Piston Ring Gap (Oil Control Ring), mm (in) ............... 0.15-0.4 (0.006-0.016)
1st Compression Ring Groove Clearance, mm (in) ............... 0.20-0.30 (0.0078-0.011)
2nd Compression Ring Groove Clearance, mm (in) ............... 0.05-0.20 (0.0019-0.0078)
Oil Control Ring Groove Clearance, mm (in) ............... 0.03-0.20 (0.0011-0.0078)
Piston Diameter (Out of round), mm (in) ............... 0.30 (0.011)
Piston Pin and Small End Bushing Diameter, mm (in) ............... 23.041-22.991 (0.907-0.905)

Lubrication System

Oil Pump Type ............... Trochoid Pump
Oil Pump Drive ............... Injection pump camshaft
Oil Filter By-Pass Pressure, kPa (psi) ............... 98 (14.22)
Relief Valve Pressure, kPa (psi) ............... 390 (57)
Oil Switch Closing Pressure, kPa (psi) ............... 48 (7)
Oil Pump Rotor to Cover Clearance, mm (in) ............... 0.03-0.20 (0.001-0.007)

Mitsubishi K3E Tightening Torque Specs

Connecting Rod Nuts, Nm (ft-lb) ............... 31-34 (23-25)
Crankshaft Pulley Retaining Nut, Nm (ft-lb) ............... 197-245 (145-181)
Cylinder Head Retaining Bolts (M10), Nm (ft-lb) ............... 64-78 (47-57.5)
Cylinder Head Retaining Bolts (M12), Nm (ft-lb) ............... 98-108 (72-80)
Flywheel Retaining Bolts, Nm (ft-lb) ............... 112-122 (82.5-90)
Fuel Injection Pump Retaining Bolts, Nm (ft-lb) ............... 10-13 (7.5-9.5)
Glow Plug, Nm (ft-lb) ............... 13-19 (9.5-14)
Injection Tube Nuts, Nm (ft-lb) ............... 24-34 (18-25)
Main Bearing Cap Retaining Bolts, Nm (ft-lb) ............... 49-54 (36-40)
Starter Motor Mounting Bolts, Nm (ft-lb) ............... 49-59 (36-43.5)