________________________________________________________________________________

Shibaura N4LDI-T Engine

General Technical Data

Engine Specifications

Engine Model ............... Shibaura N4LDI-T
Engine Type ............... 4-cycle inline 4-cylinder common rail injection liquid-cooled diesel
Number of Cylinders ............... 4
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 3.307 (84.0)
Engine Stroke, in (mm) ............... 3.937 (100.0)
Displacement, cu.in (L) ............... 135.2 (2.216)
Rated Engine Power, hp (kW) ............... 59.9 (44.7)
Rated Engine Speed, rpm ............... 2600
Peak Torque ............... 140 Nm (103.2 lb-ft) at 1800 rpm
Low Idle Speed ............... 800-900 rpm
High Idle Speed ............... 2750-2850 rpm
Aspiration Type ............... Turbocharged and Intercooled
Combustion System ............... Direct Injection Common Rail
Compression Ratio ............... 23.3:1
Firing Order ............... 1-3-4-2
Direction of Rotation ............... Counter-clockwise viewed from flywheel side
Cylinder Block Type ............... Deep-skirt cast iron monoblock
Cylinder Head Type ............... One-piece cast iron crossflow
Valves Per Cylinder ............... 2
Lubrication System ............... Forced lubrication via trochoid pump
Oil Pump Type ............... Crankshaft gear-driven trochoid type
Oil Filter Type ............... Full-flow, spin-on cartridge
Cooling System ............... Forced circulation liquid cooling system
Water Pump Type ............... Belt-driven centrifugal impeller type
Thermostat Type ............... Wax pellet type with bypass line
Air Cleaner Type ............... Dry element dual-stage safety filter
Glow Plug Type ............... Metal sheath fast-heating element
Emission Standard Certification ............... EPA Tier 4 Final
Emission Control ............... Exhaust Gas Recircirculation and DOC
Starting System ............... Electric Starter motor
Electrical System ............... 12V
Alternator Capacity ............... 12V 85A

Fuel System

Fuel Injection Pump Type ............... High-pressure common rail supply pump
Fuel Supply Pump Model ............... Denso HP3 style electronic control
Common Rail Maximum Pressure, psi (bar) ............... 26100 (1800)
Common Rail Standard Pressure, psi (bar) ............... 3625-23200 (250-1600)
Fuel Injector Type ............... Multi-hole solenoid electronic injector
Number of Injector Spray Holes ............... 6
Injector Spray Hole Diameter, in (mm) ............... 0.0055 (0.14)
Fuel Injection Timing ............... ECU controlled dynamic mapping
Pre-Injection Angle, deg ............... 2.0-8.0 before top dead center
Main Injection Angle, deg ............... 4.0-12.0 after top dead center
Fuel Lift Pump Type ............... Electric diaphragm type low pressure pump
Fuel Lift Pump Pressure, psi (bar) ............... 4.3-7.2 (0.3-0.5)
Fuel Lift Pump Minimum Flow, gph (L/hr) ............... 15.8 (60.0)
Governor Type ............... Electronic Control Unit managed
Fuel Filter System ............... Primary water separator and secondary fine filter
Primary Fuel Filter Micron Rating ............... 30 micron element
Secondary Fuel Filter Micron Rating ............... 5 micron spin-on element
Fuel Return Line Maximum Restriction, inHg (kPa) ............... 5.9 (20.0)
Fuel Supply Line Internal Diameter, in (mm) ............... 0.315 (8.0)
Fuel Return Line Internal Diameter, in (mm) ............... 0.236 (6.0)
Recommended Fuel Grade ............... Ultra Low Sulfur Diesel No. 2-D S15
Alternative Fuel Compatibility ............... Biodiesel blends up to B20 standard
Fuel Density Parameter, lb/gal (kg/L) ............... 7.01-7.18 (0.84-0.86)
Fuel Injection Electronic Control Unit ............... 32-bit digital controller module
Rail Pressure Sensor Voltage ............... 5.0V input supply
Rail Pressure Sensor Output signal ............... 0.5V-4.5V linear scale
Fuel Temperature Sensor Type ............... Negative Temperature Coefficient thermistor
Suction Control Valve Type ............... Pulse width modulation current controlled
Suction Control Valve Resistance, ohm ............... 2.1-2.6 at 68 deg F (20 deg C)
Maximum Fuel Inlet Temperature, deg F (deg C) ............... 140 (60)
Fuel System Leakage Test Pressure, psi (bar) ............... 29000 (2000)
Fuel Pressure Limiter Valve Opening Pressure, psi (bar) ............... 29700 (2050)
Fuel Pressure Limiter Valve Reset Pressure, psi (bar) ............... 20300 (1400)
Injector Backleak Flow Rate, cc/min ............... 15.0 maximum per injector

Dimensions and Weight

Overall Length, in (mm) ............... 26.2 (665)
Overall Width, in (mm) ............... 19.9 (505)
Overall Height, in (mm) ............... 29.1 (740)
Dry Weight, lbs (kg) ............... 419 (190)
Wet Weight, lbs (kg) ............... 445 (202)

Maintenance Data

Service Information

Compression Pressure, Standard, psi (bar) ............... 426 (29.4)
Compression Pressure, Repair Limit, psi (bar) ............... 341 (23.5)
Compression Variance Between Cylinders, psi (bar) ............... 29 (2.0)
Oil Pressure at Low Idle, psi (bar) ............... 14.5 (1.0) minimum
Oil Pressure at Rated Speed, psi (bar) ............... 43.5-58.0 (3.0-4.0)
Maximum Allowed Oil Temperature, F (C) ............... 248 (120)
Thermostat Valve Opening Temperature, F (C) ............... 160 (71)
Thermostat Full Open Temperature, F (C) ............... 185 (85)
Radiator Cap Pressure Rating, psi (bar) ............... 12.8 (0.9)
V-Belt Deflection Value under 22 lb Force, in (mm) ............... 0.275-0.354 (7.0-9.0)
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, qt (L) ............... 6.02 (5.7)
Engine Oil Capacity without Filter, qt (L) ............... 5.39 (5.1)
Minimum Lubrication Oil Level, qt (L) ............... 4.23 (4.0)
Engine Coolant Capacity, qt (L) ............... 4.4 (4.2)

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)
Turbocharger to Exhaust Manifold Nut, lb-ft (Nm) ............... 20.0 (27.0)
Turbocharger Exhaust Outlet Elbow, lb-ft (Nm) ............... 18.0 (25.0)

________________________________________________________________________________________

• Shibaura Engines Specs
  
• Shibaura LET852C Specs
  
• Shibaura LET862C Specs
  
• Shibaura LEK752C Specs
  
• Shibaura N3LDI Specs
  
• Shibaura N3LDI-T Specs
  
• Shibaura N4LDI Specs
  

________________________________________________________________________________

________________________________________________________________________________________

_______________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________