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Shibaura LET862C Engine

General Technical Data

Engine Specifications

Engine Model ............... Shibaura LET862C
Engine Type ............... 4-cycle inline 2-cylinder direct injection liquid-cooled diesel
Number of Cylinders ............... 2
Cylinder Arrangement ............... In-line vertical
Engine Bore, in (mm) ............... 3.35 (85.0)
Engine Stroke, in (mm) ............... 3.94 (100.0)
Displacement, cu.in (L) ............... 69.2 (1.134)
Rated Engine Power, hp (kW) ............... 19.8 (14.8) at 2500 rpm
Gross Engine Power, PS ............... 20.1 at 2500 rpm
Rated Engine Speed, rpm ............... 2500
Peak Torque, lb-ft (Nm) ............... 45.7 (62.0) at 1900 rpm
Low Idle Speed, rpm ............... 750-800
High Idle Speed, rpm ............... 2700-2750
Aspiration Type ............... Naturally aspirated
Compression Ratio ............... 21.0:1
Firing Order ............... 1-2
Cylinder Block Material ............... Cast iron
Cylinder Head Material ............... Cast iron
Pre-heating System ............... Sheathed glow plugs
Combustion Chamber ............... Swirl chamber type
Rotation Direction ............... Counterclockwise viewed from flywheel
Lubrication System ............... Full-pressure circulation
Oil Pump Type ............... Gear-driven trochoid pump
Oil Filter Type ............... Full-flow, spin-on cartridge
Cooling System ............... Forced circulation liquid-cooled
Water Pump Type ............... Belt-driven centrifugal impeller
Air Cleaner Type ............... Oil bath type
Starting System ............... Electric starter motor
Electrical System, V ............... 12
Alternator Output, A ............... 15 or 35

Fuel System

Injection Pump Type ............... Bosch Bosch-type inline mini pump
Injection Pump Model ............... ND-PFR2M
Injection Timing, deg BTDC ............... 20.0-22.0
Injection Nozzle Type ............... Throttle type nozzle
Injection Opening Pressure, psi (MPa) ............... 1706-1849 (11.8-12.7)
Fuel Feed Pump Type ............... Mechanical diaphragm type
Fuel Filter Type ............... Spin-on cartridge with water sedimenter
Fuel Delivery Pressure, psi (kPa) ............... 2.8-4.3 (19.3-29.6)
Governor Type ............... Mechanical all-speed centrifugal type
Governor Control System ............... Mechanical link lever
Fuel Injection Pipe Outer Diameter, in (mm) ............... 0.236 (6.0)
Fuel Injection Pipe Inner Diameter, in (mm) ............... 0.078 (2.0)
Fuel Return Pipe Line Diameter, in (mm) ............... 0.157 (4.0)
Maximum Fuel Consumption, lb/hp-hr (g/kW-h) ............... 0.395 (240.0)
Recommended Fuel Grade ............... Diesel No. 2-D (ASTM D975)
Cetane Number Minimum ............... 45
Maximum Allowable Fuel Inlet Restrict, inHg (kPa) ............... 3.94 (13.3)
Maximum Allowable Fuel Return Restrict, inHg (kPa) ............... 5.92 (20.0)
Fuel Tank Base Capacity, gal (L) ............... 6.34 (24.0)

Dimensions and Weight

Overall Length, in (mm) ............... 20.9 (530.0)
Overall Width, in (mm) ............... 18.5 (470.0)
Overall Height, in (mm) ............... 24.4 (620.0)
Dry Weight, lbs (kg) ............... 255 (115)
Wet Weight, lbs (kg) ............... 277 (125)

Maintenance Data

Service Information

Standard Compression Pressure, psi (MPa) ............... 427 (2.94)
Minimum Allowable Compression Pressure, psi (MPa) ............... 355 (2.45)
Compression Variation Between Cylinders, psi (MPa) ............... 28.4 (0.20)
Lubricating Oil Pressure at Low Idle, psi (kPa) ............... 14.2 (98.1)
Lubricating Oil Pressure at Rated rpm, psi (kPa) ............... 42.7-56.9 (294.2-392.3)
Oil Pressure Relief Valve Set, psi (kPa) ............... 64.0 (441.3)
Maximum Allowable Oil Temperature, F (C) ............... 230 (110)
Cooling Thermostat Opening Temp, F (C) ............... 160 (71)
Cooling Thermostat Full Open Temp, F (C) ............... 185 (85)
Cooling System Relief Valve Pressure, psi (kPa) ............... 12.8 (88.3)
Fan Belt Deflection under 22 lb (10 kg), in (mm) ............... 0.394-0.591 (10.0-15.0)
Intake Valve Clearance, Cold, in (mm) ............... 0.0079 (0.20)
Exhaust Valve Clearance, Cold, in (mm) ............... 0.0079 (0.20)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, SAE 15W-40
API Service Classifications ......................... CD, CF, or higher
Engine Oil Capacity with Filter, qts (L) ............... 4.54 (4.30)
Engine Oil Capacity (Dry Engine), qts (L) ............... 5.07 (4.80)
Coolant System Capacity (Engine Only), qts (L) ............... 2.32 (2.20)
Coolant System Capacity with Radiator, qts (L) ............... 5.60 (5.30)

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 500 hours
Change coolant ............... Every 1000 hours
Valve-lash adjustment ............... Every 400 hours
Check fuel system ............... Every 400 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) ............... 3.3465-3.3476 (85.000-85.030)
Cylinder Bore Wear Maximum Limit, in (mm) ............... 3.3543 (85.200)
Cylinder Bore Taper Maximum Limit, in (mm) ............... 0.0012 (0.030)
Cylinder Bore Out-of-Round Maximum, in (mm) ............... 0.0012 (0.030)
Cylinder Block Top Surface Flatness, in (mm) ............... 0.0020 (0.050) Below
Main Journal Outer Diameter, in (mm) ............... 2.6756-2.6764 (67.960-67.980)
Main Journal Out-of-Round Max Limit, in (mm) ............... 0.0008 (0.020)
Crankpin Outer Diameter, in (mm) ............... 2.0457-2.0465 (51.960-51.980)
Crankpin Out-of-Round Max Limit, in (mm) ............... 0.0008 (0.020)
Crankshaft Free End Play, in (mm) ............... 0.0020-0.0079 (0.050-0.200)
Main Bearing Shell Thickness, in (mm) ............... 0.0787-0.0791 (2.000-2.010)
Main Bearing Oil Clearance, in (mm) ............... 0.0016-0.0035 (0.040-0.090)
Crankpin Bearing Oil Clearance, in (mm) ............... 0.0014-0.0033 (0.035-0.085)
Thrust Washer Thickness, in (mm) ............... 0.0787-0.0807 (2.000-2.050)
Connecting Rod Small End Bushing I.D, in (mm) ............... 1.1028-1.1035 (28.010-28.030)
Connecting Rod Big End I.D, in (mm) ............... 2.1654-2.1661 (55.000-55.020)
Connecting Rod Big End Side Clearance, in (mm) ............... 0.0039-0.0118 (0.100-0.300)
Piston Skirt Outer Diameter, in (mm) ............... 3.3433-3.3445 (84.920-84.950)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0028-0.0043 (0.070-0.110)
Piston Pin Bore Inner Diameter, in (mm) ............... 1.1024-1.1028 (28.000-28.010)
Piston Pin Outer Diameter, in (mm) ............... 1.1020-1.1024 (27.990-28.000)
Piston Pin to Piston Pin Bore Clearance, in (mm) ............... 0.0000-0.0008 (0.000-0.020)
Piston Pin to Small End Bushing Clearance, in (mm) ............... 0.0004-0.0016 (0.010-0.040)
Top Ring Groove Width, in (mm) ............... 0.0799-0.0807 (2.030-2.050)
Second Ring Groove Width, in (mm) ............... 0.0791-0.0799 (2.010-2.030)
Oil Ring Groove Width, in (mm) ............... 0.1579-0.1587 (4.010-4.030)
Top Ring Side Clearance, in (mm) ............... 0.0024-0.0039 (0.060-0.100)
Second Ring Side Clearance, in (mm) ............... 0.0020-0.0035 (0.050-0.090)
Oil Ring Side Clearance, in (mm) ............... 0.0008-0.0024 (0.020-0.060)
Top Ring End Gap, in (mm) ............... 0.0079-0.0138 (0.200-0.350)
Second Ring End Gap, in (mm) ............... 0.0079-0.0138 (0.200-0.350)
Oil Ring End Gap, in (mm) ............... 0.0079-0.0157 (0.200-0.400)
Cylinder Head Bottom Surface Flatness ............... 0.0020 (0.050) Below
Intake Valve Stem Outer Diameter, in (mm) ............... 0.2736-0.2742 (6.950-6.965)
Exhaust Valve Stem Outer Diameter, in (mm) ............... 0.2724-0.2732 (6.920-6.940)
Valve Guide Inner Diameter Standard, in (mm) ............... 0.2756-0.2762 (7.000-7.015)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0014-0.0026 (0.035-0.065)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0024-0.0037 (0.060-0.095)
Valve Face Angle, deg ............... 45
Valve Seat Angle, deg ............... 45
Valve Seat Contact Width, in (mm) ............... 0.0472-0.0591 (1.20-1.50)
Valve Head Recess Depression, in (mm) ............... 0.0276-0.0354 (0.70-0.90)
Valve Head Margin Thickness, in (mm) ............... 0.0394 (1.00)
Valve Spring Free Length Standard, in (mm) ............... 1.4961 (38.00)
Camshaft Journal Outer Diameter, in (mm) ............... 1.7697-1.7705 (44.950-44.970)
Camshaft Bearing Oil Clearance, in (mm) ............... 0.0012-0.0033 (0.030-0.085)
Cam Lobe Height (Intake), in (mm) ............... 1.3583-1.3598 (34.500-34.540)
Cam Lobe Height (Exhaust), in (mm) ............... 1.3583-1.3598 (34.500-34.540)
Camshaft Free End Play, in (mm) ............... 0.0020-0.0059 (0.050-0.150)
Rocker Arm Shaft Outer Diameter, in (mm) ............... 0.4717-0.4724 (11.980-12.000)
Rocker Arm Bushing Inner Diameter, in (mm) ............... 0.4728-0.4736 (12.010-12.030)
Rocker Arm Bushing to Shaft Clearance, in (mm) ............... 0.0004-0.0020 (0.010-0.050)
Tappet Stem Outer Diameter, in (mm) ............... 0.4713-0.4719 (11.970-11.985)
Tappet Guide Hole Inner Diameter, in (mm) ............... 0.4724-0.4732 (12.000-12.018)
Tappet Stem to Guide Clearance, in (mm) ............... 0.0006-0.0019 (0.015-0.048)
Idle Gear Shaft Outer Diameter, in (mm) ............... 0.9437-0.9445 (23.970-23.990)
Idle Gear Bushing Inner Diameter, in (mm) ............... 0.9449-0.9457 (24.000-24.020)
Idle Gear Shaft to Bushing Clearance, in (mm) ............... 0.0004-0.0020 (0.010-0.050)

Tightening Torques

Cylinder Head Bolts, lb-ft (Nm) ............... 107.7-112.2 (146.0-152.0)
Connecting Rod Cap Bolts, lb-ft (Nm) ............... 33.2-36.9 (45.0-50.0)
Main Bearing Holder Bolts, lb-ft (Nm) ............... 52.4-59.8 (71.0-81.0)
Flywheel Bolts, lb-ft (Nm) ............... 253.1-325.5 (343.0-441.0)
Crankshaft Pulley Nut, lb-ft (Nm) ............... 36.2-43.5 (49.0-59.0)
Crankshaft Rear Plate Bolts, lb-ft (Nm) ............... 33.9-39.9 (46.0-54.0)
Rocker Arm Shaft Bracket Bolts, lb-ft (Nm) ............... 20.3-28.9 (27.5-39.2)
Valve Cover Nut, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Oil Pan Drain Plug, lb-ft (Nm) ............... 36.2-43.5 (49.0-59.0)
Oil Pan Fasteners, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Timing Gear Case Fasteners, lb-ft (Nm) ............... 13.0-17.4 (17.7-23.5)
Injection Pump Delivery Fasteners, lb-ft (Nm) ............... 14.5-21.7 (19.6-29.4)
Injection Nozzle Assembly Holder, lb-ft (Nm) ............... 43.4-57.9 (58.8-78.5)
Injection Nozzle Retaining Nut, lb-ft (Nm) ............... 28.9-36.2 (39.2-49.0)
Glow Plug Fasteners, lb-ft (Nm) ............... 10.8-14.5 (14.7-19.6)
Exhaust Manifold Fasteners, lb-ft (Nm) ............... 18.1-25.3 (24.5-34.3)
Intake Manifold Fasteners, lb-ft (Nm) ............... 13.0-17.4 (17.7-23.5)
Water Pump Fasteners, lb-ft (Nm) ............... 13.0-17.4 (17.7-23.5)
Thermostat Housing Fasteners, lb-ft (Nm) ............... 13.0-17.4 (17.7-23.5)
Oil Pressure Switch Sensor, lb-ft (Nm) ............... 10.8-14.5 (14.7-19.6)
Water Temperature Sensor, lb-ft (Nm) ............... 14.5-21.7 (19.6-29.4)
Alternator Pivot Support Fastener, lb-ft (Nm) ............... 25.3-36.2 (34.3-49.0)
Alternator Adjusting Link Fastener, lb-ft (Nm) ............... 13.0-17.4 (17.7-23.5)
Starter Motor Mounting Fasteners, lb-ft (Nm) ............... 36.2-50.6 (49.0-68.6)
Fuel Feed Pump Mounting Fasteners, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Oil Pump Cover Plate Fasteners, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Flywheel Housing Frame Fasteners, lb-ft (Nm) ............... 36.2-43.5 (49.0-59.0)
Front Engine Mount Foot Fasteners, lb-ft (Nm) ............... 43.4-57.9 (58.8-78.5)
Rear Engine Mount Foot Fasteners, lb-ft (Nm) ............... 43.4-57.9 (58.8-78.5)
Breather Valve Cover Assembly Fasteners, lb-ft (Nm) ............... 3.6-5.8 (4.9-7.8)
Idle Gear Shaft Retaining Fastener, lb-ft (Nm) ............... 21.7-28.9 (29.4-39.2)
Camshaft Thrust Plate Fasteners, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Fuel Filter Bracket Support Fasteners, lb-ft (Nm) ............... 14.5-21.7 (19.6-29.4)
Fan Pulley Retaining Center Nut, lb-ft (Nm) ............... 28.9-43.4 (39.2-58.8)
Injection Pipe Flare Nuts, lb-ft (Nm) ............... 18.1-21.7 (24.5-29.4)
Fuel Overflow Leakage Pipe Nut, lb-ft (Nm) ............... 14.5-18.1 (19.6-24.5)
Air Intake Hose Clamp Fasteners, lb-ft (Nm) ............... 2.2-3.6 (3.0-4.9)

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