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Shibaura N4LDI Engine

General Technical Data

Engine Specifications

Engine Model ............... Shibaura N4LDI
Engine Type ............... 4-cycle inline 4-cylinder direct injection liquid-cooled diesel
Number of Cylinders ............... 4
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 3.31 (84.0)
Engine Stroke, in (mm) ............... 3.94 (100.0)
Displacement, cu.in (L) ............... 135.2 (2.216)
Rated Engine Power, hp (kW) ............... 27.0-45.0 (20.1-33.6)
Rated Engine Speed, rpm ............... 2500-2800
Peak Torque ............... 95.8-118.0 lb-ft (130.0-160.0 Nm) at 1600-1800 rpm
Idle Speed ............... 800-900 rpm
Maximum No-Load Speed, rpm ............... 2750-2950
Aspiration Type ............... Naturally Aspirated
Compression Ratio ............... 19.5:1
Firing Order ............... 1-3-4-2
Direction of Rotation ............... Counterclockwise viewed from flywheel
Cylinder Block Type ............... Monoblock cast iron
Cylinder Head Type ............... Single-piece cast iron overhead valve
Combustion Chamber ............... Direct injection with bowl-in-piston design
Lubrication System ............... Forced pressure feed lubrication
Oil Pump Type ............... Trochoid rotor pump gear-driven from crankshaft
Oil Filter Type ............... Full-flow spin-on cartridge elements
Cooling System ............... Forced liquid circulation with radiator
Water Pump Type ............... Belt-driven centrifugal impeller
Air Cleaner Type ............... Dry element dual stage filtration system
Starting System ............... Electric motor starter axial type
Electrical System Voltage, V ............... 12.0
Alternator Capacity, A ............... 40.0-55.0

Fuel System

Fuel Injection Pump Type ............... In-line Bosch cassette style injection pump
Fuel Feed Pump Type ............... Mechanical plunger type driven by camshaft
Fuel Injection Nozzle Type ............... Multi-hole mini nozzle configuration
Number of Injection Nozzle Holes ............... 5
Injection Nozzle Hole Diameter, in (mm) ............... 0.008 (0.21)
Injection Start Pressure, psi (bar) ............... 2900.0-3045.0 (200.0-210.0)
Fuel Injection Timing ............... 14.0 degrees BTDC
Governor Type ............... Mechanical centrifugal all-speed control
Fuel Filter Type ............... Spin-on cartridge element with water separator ring
Fuel Transfer Pump Delivery Pressure, psi (bar) ............... 2.9-4.3 (0.2-0.3)
Maximum Fuel Suction Head, in (mm) ............... 20.0 (508.0)
Fuel Return Line Maximum Back Pressure, psi (bar) ............... 1.45 (0.1)
Injection Line Outer Diameter, in (mm) ............... 0.236 (6.0)
Injection Line Inner Diameter, in (mm) ............... 0.078 (2.0)
Fuel Tank Ventilating System Opening Pressure, psi (kPa) ............... 0.72 (5.0)
Fuel Leak-off Pipe Internal Diameter, in (mm) ............... 0.157 (4.0)
Recommended Fuel ............... Ultra low sulfur diesel fuel standard ASTM D975 No 2-D
Alternative Fuel ............... EN 590 diesel fuel standard compliance
Max Allowable Biodiesel Blend ............... B5 concentration maximum standard limit
Fuel System Venting Method ............... Manual priming lever on fuel feed pump block

Dimensions and Weight

Overall Length, in (mm) ............... 26.5 (675)
Overall Width, in (mm) ............... 19.3 (490)
Overall Height, in (mm) ............... 27.2 (690)
Weight Without Accessories, lbs (kg) ............... 406 (184)
Weight With Operating Fluids, lbs (kg) ............... 432 (196)

Maintenance Data

Service Information

Cylinder Compression Pressure, psi (kPa) ............... 426.0 (2940.0)
Minimum Compression Pressure, psi (kPa) ............... 355.0 (2450.0)
Compression Difference Between Cylinders, psi (kPa) ............... 28.4 (196.0)
Oil Pressure at Idle Speed, psi (kPa) ............... 14.5 (100.0)
Oil Pressure at Rated Speed, psi (kPa) ............... 43.5-58.0 (300.0-400.0)
Relief Valve Cracking Pressure, psi (kPa) ............... 64.0 (441.0)
Thermostat Opening Temperature, F (C) ............... 160.0 (71.0)
Thermostat Full-Open Temperature, F (C) ............... 185.0 (85.0)
V-Belt Deflection Under 22 lb Force, in (mm) ............... 0.28-0.39 (7.0-10.0)
Intake Valve Lash, Cold, in (mm) ............... 0.008 (0.20)
Exhaust Valve Lash, Cold, in (mm) ............... 0.008 (0.20)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, SAE 15W-40
API Service Classifications ......................... CJ-4 or CK-4
Engine Oil Capacity with Filter Change, qt (L) ............... 8.66 (8.2)
Engine Oil Capacity (Pan Only), qt (L) ............... 7.82 (7.4)
Cooling System Capacity (Engine Block), qt (L) ............... 3.38 (3.2)
Cooling System Capacity with Radiator, qt (L) ............... 8.45 (8.0)

Service Intervals

Change engine oil ............... Every 250 hours
Replace oil filter ............... Every 250 hours
Replace fuel filter ............... Every 500 hours
Service air filter ............... Every 100 hours
Replace air filter ............... Every 1000 hours
Change coolant ............... Every 2000 hours
Valve-lash adjustment ............... Every 1000 hours
Check fuel system ............... Every 1000 hours
Compression test ............... Every 1000 hours
Clean radiator fin ............... Every 100 hours
Belt inspection ............... Every 100 hours

Service Specifications

Cylinder Block Bore Inside Diameter, in (mm) ............... 3.3071-3.3081 (84.000-84.025)
Cylinder Block Bore Roundnesst, in (mm) ............... 0.0004 (0.010)
Cylinder Block Top Surface Distortion, in (mm) ............... 0.0020 (0.050)
Connecting Rod Small End Bushing I.D, in (mm) ............... 1.1031-1.1039 (28.020-28.040)
Connecting Rod Small End Side Clearance, in (mm) ............... 0.0008-0.0019 (0.020-0.048)
Connecting Rod Big End Bore I.D, in (mm) ............... 2.1654-2.1661 (55.000-55.018)
Crankshaft Main Journal Diameter, in (mm) ............... 2.6764-2.6772 (67.982-68.000)
Crankshaft Main Bearing Clearance, in (mm) ............... 0.0015-0.0033 (0.039-0.084)
Crankpin Journal Diameter, in (mm) ............... 2.0465-2.0472 (51.982-52.000)
Crankpin Bearing Oil Clearance, in (mm) ............... 0.0014-0.0033 (0.035-0.085)
Crankshaft End Play, in (mm) ............... 0.0020-0.0071 (0.050-0.180)
Piston Skirt Outer Diameter, in (mm) ............... 3.3043-3.3051 (83.930-83.950)
Piston to Cylinder Wall Clearance, in (mm) ............... 0.0020-0.0037 (0.050-0.095)
Piston Pin Bore Inside Diameter, in (mm) ............... 1.1024-1.1027 (28.002-28.010)
Piston Pin Outer Diameter, in (mm) ............... 1.1021-1.1024 (27.994-28.000)
Piston Pin to Piston Pin Bore Clearance, in (mm) ............... 0.0001-0.0006 (0.002-0.016)
Piston Pin to Small End Bushing Clearance, in (mm) ............... 0.0004-0.0013 (0.010-0.034)
Top Ring Groove Width, in (mm) ............... 0.0787-0.0795 (2.000-2.020)
Second Ring Groove Width, in (mm) ............... 0.0787-0.0795 (2.000-2.020)
Oil Ring Groove Width, in (mm) ............... 0.1575-0.1583 (4.000-4.020)
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) ............... 0.0012-0.0028 (0.030-0.070)
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 Flatness Limit Surface, in (mm) ............... 0.0020 (0.050)
Intake Valve Head Diameter, in (mm) ............... 1.34 (34.0)
Exhaust Valve Head Diameter, in (mm) ............... 1.18 (30.0)
Intake Valve Stem Outer Diameter, in (mm) ............... 0.2738-0.2744 (6.955-6.970)
Exhaust Valve Stem Outer Diameter, in (mm) ............... 0.2726-0.2732 (6.925-6.940)
Valve Guide Inside Diameter, in (mm) ............... 0.2756-0.2762 (7.000-7.015)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0012-0.0024 (0.030-0.060)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0024-0.0035 (0.060-0.090)
Intake Valve Sink Depth, in (mm) ............... 0.0276-0.0374 (0.700-0.950)
Exhaust Valve Sink Depth, in (mm) ............... 0.0276-0.0374 (0.700-0.950)
Valve Seat Angle, deg ............... 45
Valve Face Angle, deg ............... 45
Valve Spring Free Length, in (mm) ............... 1.6929 (43.000)
Camshaft Journal Diameter (Front), in (mm) ............... 1.8492-1.8500 (46.970-46.990)
Camshaft Journal Diameter (Center), in (mm) ............... 1.8374-1.8382 (46.670-46.690)
Camshaft Journal Diameter (Rear), in (mm) ............... 1.8256-1.8264 (46.370-46.390)
Camshaft Journal Clearance, in (mm) ............... 0.0012-0.0035 (0.030-0.090)
Cam Lobe Height (Intake), in (mm) ............... 1.4390-1.4413 (36.550-36.610)
Cam Lobe Height (Exhaust), in (mm) ............... 1.4390-1.4413 (36.550-36.610)
Camshaft 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 Inside Diameter, in (mm) ............... 0.4732-0.4740 (12.020-12.040)
Rocker Arm Bushing to Shaft Clearance, in (mm) ............... 0.0008-0.0024 (0.020-0.060)
Tappet Outer Diameter, in (mm) ............... 0.4711-0.4719 (11.965-11.985)
Tappet Bore in Cylinder Block, in (mm) ............... 0.4724-0.4735 (12.000-12.027)
Tappet to Cylinder Block Clearance, in (mm) ............... 0.0006-0.0024 (0.015-0.062)
Idler Gear Shaft Outer Diameter, in (mm) ............... 1.3366-1.3374 (33.950-33.970)
Idler Gear Bushing Inside Diameter, in (mm) ............... 1.3386-1.3396 (34.000-34.025)
Idler Gear Bushing to Shaft Clearance, in (mm) ............... 0.0012-0.0030 (0.030-0.075)

Tightening Torques

Cylinder Head Bolts (Step 1), lb-ft (Nm) ............... 25.3 (34.3)
Cylinder Head Bolts (Step 2), lb-ft (Nm) ............... 50.6 (68.6)
Cylinder Head Bolts (Step 3), lb-ft (Nm) ............... 72.3-79.6 (98.0-108.0)
Main Bearing Cap Bolts, lb-ft (Nm) ............... 39.8-44.9 (54.0-61.0)
Connecting Rod Cap Nuts, lb-ft (Nm) ............... 36.2-41.2 (49.0-56.0)
Flywheel Bolts, lb-ft (Nm) ............... 43.4-50.6 (59.0-68.6)
Crankshaft Pulley Center Bolt, lb-ft (Nm) ............... 83.2-94.0 (113.0-127.4)
Camshaft Thrust Plate Bolts, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Rocker Arm Shaft Bracket Bolts, lb-ft (Nm) ............... 20.3-25.3 (27.5-34.3)
Valve Cover Cap Nuts, lb-ft (Nm) ............... 5.8-8.7 (7.8-11.8)
Timing Gear Case Cover Bolts, lb-ft (Nm) ............... 14.5-18.1 (19.6-24.5)
Idler Gear Shaft Lock Bolt, lb-ft (Nm) ............... 20.3-25.3 (27.5-34.3)
Oil Pan Mounting Bolts, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Oil Pan Drain Plug, lb-ft (Nm) ............... 25.3-32.5 (34.3-44.1)
Oil Pump Assembly Bolts, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Oil Pressure Switch Sensor, lb-ft (Nm) ............... 10.8-14.5 (14.7-19.6)
Fuel Injection Pump Delivery Valve Holders, lb-ft (Nm) ............... 28.9-32.5 (39.2-44.1)
Fuel Injection Pump Mounting Nuts, lb-ft (Nm) ............... 14.5-18.1 (19.6-24.5)
Fuel Injection Pump Drive Gear Nut, lb-ft (Nm) ............... 43.4-50.6 (59.0-68.6)
Fuel Injector Assembly into Cylinder Head, lb-ft (Nm) ............... 43.4-50.6 (59.0-68.6)
Fuel Injection Pipe Union Nuts, lb-ft (Nm) ............... 18.1-21.7 (24.5-29.4)
Fuel Leak-off Pipe Retaining Nuts, lb-ft (Nm) ............... 14.5-18.1 (19.6-24.5)
Glow Plugs Retaining Torque, lb-ft (Nm) ............... 10.8-14.5 (14.7-19.6)
Water Pump Mounting Bolts, lb-ft (Nm) ............... 14.5-18.1 (19.6-24.5)
Thermostat Housing Cover Bolts, lb-ft (Nm) ............... 14.5-18.1 (19.6-24.5)
Intake Manifold Mounting Bolts, lb-ft (Nm) ............... 14.5-18.1 (19.6-24.5)
Exhaust Manifold Mounting Bolts, lb-ft (Nm) ............... 18.1-21.7 (24.5-29.4)
Starter Motor Mounting Bolts, lb-ft (Nm) ............... 36.2-43.4 (49.0-59.0)
Alternator Mounting Pivot Bolt, lb-ft (Nm) ............... 36.2-43.4 (49.0-59.0)
Alternator Adjusting Strap Bolt, lb-ft (Nm) ............... 14.5-18.1 (19.6-24.5)
Exhaust Pipe Flange Nuts, lb-ft (Nm) ............... 21.7-28.9 (29.4-39.2)
Flywheel Housing Mounting Bolts, lb-ft (Nm) ............... 36.2-43.4 (49.0-59.0)
Oil Strainer Pickup Tube Bolt, lb-ft (Nm) ............... 7.2-10.8 (9.8-14.7)
Crankcase Breather Valve Cover Bolts, lb-ft (Nm) ............... 5.8-8.7 (7.8-11.8)

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• Shibaura N4LDI-T Specs
  

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