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Shibaura E643 Engine

General Technical Data

Engine Specifications

Engine Model ............... Shibaura E643
Engine Type ............... 4-cycle inline 3-cylinder liquid-cooled diesel
Number of Cylinders ............... 3
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 2.52 (64.0)
Engine Stroke, in (mm) ............... 2.52 (64.0)
Displacement, cu.in (L) ............... 37.65 (0.617)
Rated Engine Power, hp (kW) ............... 14.0 (10.4)
Rated Engine Speed, rpm ............... 3200
Peak Torque ............... 26.5 Nm (19.5 lb-ft) at 2200 rpm
Idle Speed ............... 900-1000 rpm
Aspiration Type ............... Naturally Aspirated
Operating Speed ............... 3200 rpm
Compression Ratio ............... 23.0:1
Firing Order ............... 1-2-3
Rotation Direction ............... Counterclockwise facing flywheel
Combustion Chamber ............... Swirl chamber type IDI
Cylinder Block Type ............... Cast iron
Cylinder Head Type ............... Cast iron
Lubrication System ............... Full-pressure forced lubrication
Oil Pump Type ............... Trochoid pump, gear-driven
Oil Filter Type ............... Full-flow, spin-on cartridge
Cooling System ............... Liquid-cooled centrifugal forced circulation
Water Pump Type ............... Belt-driven, centrifugal impeller
Air Cleaner Type ............... Dry dual-stage element
Starting System ............... Electric Starter
Electrical System ............... 12V

Fuel System

Fuel Injection Pump Type ............... Bosch inline type minipump
Fuel Injector Type ............... Throttle type nozzle
Governor Type ............... Mechanical centrifugal type
Injection Timing, deg ............... 19-21 BTDC
Injection Opening Pressure, psi (MPa) ............... 1700-1849 (11.7-12.7)
Fuel Transfer Pump Type ............... Mechanical diaphragm type
Fuel Filter Type ............... Spin-on cartridge with water sedimentor
Fuel Delivery Control ............... Mechanical rack and pin governor
Recommended Fuel Grade ............... ASTM D975 No. 2-D ultra-low sulfur diesel
Maximum Fuel Return Flow, gph (L/h) ............... 1.58 (6.0)
Maximum Fuel Inlet Restriction, in Hg (kPa) ............... 3.93 (13.3)
Fuel Tank Venting Requirement, cfm (m3/min) ............... 0.53 (0.015)
Fuel Feed Line Diameter, in (mm) ............... 0.25 (6.35)
Fuel Return Line Diameter, in (mm) ............... 0.18 (4.76)
Leak-off Pipe Diameter, in (mm) ............... 0.15 (4.0)
Injection Pipe Outer Diameter, in (mm) ............... 0.23 (6.0)
Injection Pipe Inner Diameter, in (mm) ............... 0.07 (2.0)
Governor Regulation Factor, percent ............... 8-12
Maximum Injection Quantity, cu.mm/stroke ............... 14.5
Smoke Level at Full Load, Bosch ............... 2.0-3.0
Cold Start Preheating Element ............... Glow plugs, parallel wiring
Glow Plug Current Draw, A ............... 9.5 per plug
Glow Plug Rated Voltage, V ............... 10.5

Dimensions and Weight

Overall Length, in (mm) ............... 16.5 (420)
Overall Width, in (mm) ............... 14.9 (380)
Overall Height, in (mm) ............... 19.7 (500)
Dry Weight, lbs (kg) ............... 145 (65)
Wet Weight, lbs (kg) ............... 155 (70)

Maintenance Data

Service Information

Compression Pressure, psi (MPa) ............... 350-426 (2.41-2.94)
Normal Engine Oil Pressure, psi (MPa) ............... 28.4-56.8 (0.19-0.39)
Idle Engine Oil Pressure, psi (MPa) ............... 9.95 (0.068)
Thermostat Opening Temperature, F (C) ............... 160 (71.0)
Thermostat Full Open Temperature, F (C) ............... 185 (85.0)
Radiator Cap Relief Pressure, psi (kPa) ............... 12.8 (88.2)
Fan Belt Deflection Distance, in (mm) ............... 0.39-0.47 (10.0-12.0)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, SAE 15W-40
API Service Classifications ......................... CF, CF-4, or CG-4
Engine Oil Capacity with Filter, qt (L) ............... 3.17 (3.0)
Engine Oil Capacity (Dry Engine), qt (L) ............... 3.48 (3.3)
Cooling System Capacity (Engine only), qt (L) ............... 1.58 (1.5)
Cooling System Capacity with Radiator, qt (L) ............... 4.22 (4.0)

Service Intervals

Change engine oil ............... Every 100 hours
Replace oil filter ............... Every 200 hours
Replace fuel filter ............... Every 200 hours
Service air filter ............... Every 50 hours
Replace air filter ............... Every 400 hours
Change coolant ............... Every 1000 hours
Valve-lash adjustment ............... Every 400 hours
Check fuel system ............... Every 600 hours
Compression test ............... Every 1000 hours
Clean radiator fin ............... Every 100 hours
Belt inspection ............... Every 100 hours

Service Specifications

Cylinder Bore Inside Diameter, in (mm) ............... 2.519-2.520 (64.000-64.019)
Cylinder Bore I.D Maximum Wear Limit, in (mm) ............... 2.527 (64.200)
Cylinder Bore Out-of-Round Limit, in (mm) ............... 0.0007 (0.020)
Connecting Rod Small End Bushing I.D, in (mm) ............... 0.7876-0.7881 (20.007-20.019)
Connecting Rod Big End Bore I.D, in (mm) ............... 1.7323-1.7328 (44.000-44.015)
Connecting Rod Side Clearance, in (mm) ............... 0.0039-0.0118 (0.100-0.300)
Crankshaft Main Journal Outer Diameter, in (mm) ............... 1.8885-1.8891 (47.964-47.975)
Crankshaft Main Bearing Clearance, in (mm) ............... 0.0013-0.0029 (0.035-0.074)
Crankpin Journal Outer Diameter, in (mm) ............... 1.6128-1.6134 (40.964-40.975)
Crankpin Bearing Clearance, in (mm) ............... 0.0013-0.0027 (0.035-0.071)
Crankshaft Thrust End Play, in (mm) ............... 0.0019-0.0068 (0.050-0.175)
Piston Skirt Outer Diameter, in (mm) ............... 2.516-2.517 (63.935-63.950)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0019-0.0033 (0.050-0.084)
Piston Pin Bore Inner Diameter, in (mm) ............... 0.7874-0.7876 (20.002-20.010)
Piston Pin Outer Diameter, in (mm) ............... 0.7871-0.7873 (19.993-20.000)
Piston Pin to Piston Pin Bore Clearance, in (mm) ............... 0.00007-0.00067 (0.002-0.017)
Top Ring Groove Width, in (mm) ............... 0.061-0.062 (1.560-1.580)
Second Ring Groove Width, in (mm) ............... 0.060-0.061 (1.520-1.540)
Oil Ring Groove Width, in (mm) ............... 0.119-0.120 (3.015-3.035)
Top Ring Side Clearance, in (mm) ............... 0.0023-0.0037 (0.060-0.095)
Second Ring Side Clearance, in (mm) ............... 0.0019-0.0033 (0.050-0.085)
Oil Ring Side Clearance, in (mm) ............... 0.0007-0.0021 (0.020-0.055)
Top Ring End Gap, in (mm) ............... 0.0059-0.0118 (0.150-0.300)
Second Ring End Gap, in (mm) ............... 0.0059-0.0118 (0.150-0.300)
Oil Ring End Gap, in (mm) ............... 0.0078-0.0157 (0.200-0.400)
Cylinder Head Surface Distortion Flatness, in (mm) ............... 0.0019 (0.050)
Cylinder Block Top Surface Flatness, in (mm) ............... 0.0019 (0.050)
Intake Valve Stem Outer Diameter, in (mm) ............... 0.2342-0.2348 (5.950-5.965)
Exhaust Valve Stem Outer Diameter, in (mm) ............... 0.2334-0.2340 (5.930-5.945)
Valve Guide Inner Diameter, in (mm) ............... 0.2362-0.2367 (6.000-6.012)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0013-0.0024 (0.035-0.062)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0021-0.0032 (0.055-0.082)
Valve Face Angle, deg ............... 45
Valve Seat Angle, deg ............... 45
Intake Valve Recessing Depth, in (mm) ............... 0.0275-0.0374 (0.700-0.950)
Exhaust Valve Recessing Depth, in (mm) ............... 0.0275-0.0374 (0.700-0.950)
Intake Valve Seat Width, in (mm) ............... 0.0590-0.0826 (1.500-2.100)
Exhaust Valve Seat Width, in (mm) ............... 0.0590-0.0826 (1.500-2.100)
Valve Spring Free Length, in (mm) ............... 1.3779 (35.000)
Camshaft Journal Outer Diameter, in (mm) ............... 1.5732-1.5740 (39.960-39.980)
Camshaft Journal Bushing Inner Diameter, in (mm) ............... 1.5748-1.5761 (40.000-40.035)
Camshaft Oil Clearance, in (mm) ............... 0.0007-0.0029 (0.020-0.075)
Cam Lobe Height (Intake), in (mm) ............... 1.0425 (26.480)
Cam Lobe Height (Exhaust), in (mm) ............... 1.0425 (26.480)
Rocker Arm Bushing Inner Diameter, in (mm) ............... 0.4724-0.4731 (12.000-12.018)
Rocker Arm Shaft Outer Diameter, in (mm) ............... 0.4711-0.4718 (11.966-11.984)
Rocker Arm Bushing to Shaft Clearance, in (mm) ............... 0.0006-0.0020 (0.016-0.052)
Idler Gear Shaft Outer Diameter, in (mm) ............... 0.9431-0.9440 (23.955-23.980)
Idler Gear Bushing Inner Diameter, in (mm) ............... 0.9448-0.9457 (24.000-24.021)
Idler Gear Shaft to Bushing Clearance, in (mm) ............... 0.0007-0.0025 (0.020-0.066)

Tightening Torques

Cylinder Head M8 Bolts, lb-ft (Nm) ............... 21.7-25.3 (29.4-34.3)
Cylinder Head M10 Bolts, lb-ft (Nm) ............... 54.2-57.8 (73.5-78.4)
Connecting Rod Cap Nut, lb-ft (Nm) ............... 23.1-25.3 (31.4-34.3)
Main Bearing Holder Bolt, lb-ft (Nm) ............... 36.1-39.7 (49.0-53.9)
Main Bearing Holder Screw, lb-ft (Nm) ............... 18.0-21.6 (24.5-29.4)
Flywheel Mounting Bolt, lb-ft (Nm) ............... 43.3-47.0 (58.8-63.7)
Crankshaft Pulley Nut, lb-ft (Nm) ............... 65.0-72.3 (88.2-98.0)
Rocker Arm Shaft Bracket Bolt, lb-ft (Nm) ............... 20.2-25.3 (27.4-34.3)
Cylinder Head Cover Cap Nut, lb-ft (Nm) ............... 5.0-7.2 (6.8-9.8)
Exhaust Manifold Mounting Nut, lb-ft (Nm) ............... 14.4-18.0 (19.6-24.5)
Intake Manifold Mounting Bolt, lb-ft (Nm) ............... 14.4-18.0 (19.6-24.5)
Oil Pan Drain Plug, lb-ft (Nm) ............... 25.3-32.5 (34.3-44.1)
Oil Pan Mounting Fastener Bolt, lb-ft (Nm) ............... 7.2-10.1 (9.8-13.7)
Injection Pump Delivery Valve Holder, lb-ft (Nm) ............... 25.3-28.9 (34.3-39.2)
Injection Pump Nozzle Holder Fitting, lb-ft (Nm) ............... 43.3-50.6 (58.8-68.6)
Injection Pump Nut to Gear Attachment, lb-ft (Nm) ............... 28.9-36.1 (39.2-49.0)
Injection Nozzle Retaining Nut, lb-ft (Nm) ............... 25.3-28.9 (34.3-39.2)
Fuel Injection Pipe Joint Nut, lb-ft (Nm) ............... 18.0-21.6 (24.5-29.4)
Fuel Leak-off Pipe Assembly Nut, lb-ft (Nm) ............... 18.0-21.6 (24.5-29.4)
Glow Plug Terminal Screw, lb-ft (Nm) ............... 1.0-1.5 (1.3-2.0)
Glow Plug Body Installation, lb-ft (Nm) ............... 10.8-14.4 (14.7-19.6)
Oil Pressure Switch Sensor, lb-ft (Nm) ............... 10.8-14.4 (14.7-19.6)
Coolant Temperature Sensor, lb-ft (Nm) ............... 18.0-21.6 (24.5-29.4)
Water Pump Assembly Base Bolt, lb-ft (Nm) ............... 14.4-18.0 (19.6-24.5)
Thermostat Housing Cover Bolt, lb-ft (Nm) ............... 14.4-18.0 (19.6-24.5)
Starter Motor Mounting Flange Bolt, lb-ft (Nm) ............... 36.1-43.3 (49.0-58.8)
Alternator Pivot Mount Bolt , lb-ft (Nm) ............... 36.1-43.3 (49.0-58.8)
Alternator Adjusting Brace Lock Bolt, lb-ft (Nm) ............... 14.4-18.0 (19.6-24.5)
Timing Gear Case Shield Bolt, lb-ft (Nm) ............... 14.4-18.0 (19.6-24.5)
Rear Oil Seal Housing Mount Bolt, lb-ft (Nm) ............... 7.2-10.1 (9.8-13.7)
Idler Gear Shaft Secure Bolt, lb-ft (Nm) ............... 20.2-25.3 (27.4-34.3)
Oil Pump Cover Plate Screw, lb-ft (Nm) ............... 5.0-7.2 (6.8-9.8)
Front Engine Plate Base Bolt, lb-ft (Nm) ............... 14.4-18.0 (19.6-24.5)
Flywheel Housing Plate Fastener, lb-ft (Nm) ............... 36.1-43.3 (49.0-58.8)
Breather Valve Chamber Cap Screw, lb-ft (Nm) ............... 3.6-5.0 (4.9-6.8)
Fan Drive Pulley Hub Bolt, lb-ft (Nm) ............... 7.2-10.1 (9.8-13.7)
Oil Delivery Pipe Union Bolt, lb-ft (Nm) ............... 8.6-11.5 (11.7-15.6)
Fuel Filter Bracket Mount Stud Bolt, lb-ft (Nm) ............... 20.2-25.3 (27.4-34.3)
Exhaust Pipe Extension Flange Nut, lb-ft (Nm) ............... 25.3-32.5 (34.3-44.1)
Intake Manifold Duct Segment Screw, lb-ft (Nm) ............... 7.2-10.1 (9.8-13.7)
Valve Adjusting Screw Lock Jam Nut, lb-ft (Nm) ............... 8.6-11.5 (11.7-15.6)

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