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Doosan DB58 Engine

General Technical Data

Engine Specifications

Engine Model ............... Doosan DB58
Engine Type ............... 4-cycle vertical inline 6-cylinder water-cooled direct injection diesel
Number of Cylinders ............... 6
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 4.015 (102.0)
Engine Stroke, in (mm) ............... 4.645 (118.0)
Displacement, cu.in (L) ............... 353 (5.785)
Rated Engine Power, hp (kW) ............... 115-172 (85-126.5)
Rated Engine Speed, rpm ............... 1800-2800
Peak Torque ............... 370-696 Nm (273-513 lb-ft) at 1400-1600 rpm
Idle Speed ............... 775-1000 rpm
Aspiration Type ............... Naturally Aspirated or Turbocharged and Intercooled
Operating Speed ............... 1500-2800 rpm
Compression Ratio ............... 17.5:1-18.5:1
Firing Order ............... 1-5-3-6-2-4
Cylinder Block Type ............... Cast iron
Cylinder Head Type ............... Cast iron
Lubrication System ............... Fully forced pressure feed type
Oil Pump Type ............... Gear type driven by crankshaft
Oil Filter Type ............... Full flow cartridge type
Cooling System ............... Fresh water forced circulation
Water Pump Type ............... Belt driven centrifugal type
Air Cleaner Type ............... Dry dual stage type
Starting System ............... Electric Starter
Starter Motor Capacity ............... 4.5 kW
Electrical System ............... 24V
Alternator Capacity ............... 45 or 60A

Fuel System

Injection Pump Type ............... Bosch in-line type
Governor Type ............... Mechanical RSV or electronic type
Injection Nozzle Type ............... Multi hole type
Injection Pressure, psi (bar) ............... 2630-3130 (181-216)
Fuel Filter Type ............... Full flow cartridge spin on
Feed Pump Type ............... Mechanical plunger type
Fuel Transfer Rate, gpm (L/min) ............... 0.53-0.79 (2.0-3.0)
Maximum Fuel Inlet Restriction, in Hg (kPa) ............... 3.94 (13.3)
Maximum Fuel Return Restriction, in Hg (kPa) ............... 5.91 (20.0)
Injection Timing, deg BTDC ............... 15-20
Fuel Leak Off Pipe Diameter, in (mm) ............... 0.236 (6.0)
Fuel Injection Pipe Outer Diameter, in (mm) ............... 0.250 (6.35)
Fuel Injection Pipe Inner Diameter, in (mm) ............... 0.078 (2.0)
Water Separator Capacity, oz (mL) ............... 6.76 (200)
Maximum Allowable Fuel Temperature, deg F (deg C) ............... 140 (60)
Fuel Tank Vent Requirement, in H2O (kPa) ............... 4.01 (1.0)
Fuel System Air Bleed Type ............... Manual priming pump

Dimensions and Weight

Overall Length, in (mm) ............... 41.2 (1045)
Overall Width, in (mm) ............... 26.2 (665)
Overall Height, in (mm) ............... 34.6 (880)
Dry Weight, lbs (kg) ............... 1003-1113 (455-505)
Wet Weight, lbs (kg) ............... 1058-1168 (480-530)

Maintenance Data

Service Information

Compression Pressure, Standard, psi (bar) ............... 398-440 (27.5-30.4)
Compression Pressure, Limit, psi (bar) ............... 341-370 (23.5-25.5)
Maximum Cylinder Pressure Inequality, psi (bar) ............... 28.4 (1.96)
Oil Pressure at Low Idle, psi (bar) ............... 14.2-21.3 (0.98-1.47)
Oil Pressure at Rated Speed, psi (bar) ............... 42.6-71.1 (2.94-4.90)
Maximum Oil Temperature, F (C) ............... 230 (110)
Thermostat Opening Temperature, F (C) ............... 176-183 (80-84)
Thermostat Full Open Temperature, F (C) ............... 203 (95)
V-Belt Deflection under 10 kg Force, in (mm) ............... 0.39-0.59 (10.0-15.0)
Intake Valve Clearance, Cold, in (mm) ............... 0.0157 (0.40)
Exhaust Valve Clearance, Cold, in (mm) ............... 0.0157 (0.40)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, 15W-40
API Service Classifications ......................... CH-4 or CG-4
Engine Oil Capacity with Filter, qt (L) ............... 21.66 (20.5)
Engine Oil Capacity (Oil Pan Only), qt (L) ............... 20.07 (19.0)
Coolant Capacity (Engine Only), qt (L) ............... 12.68 (12.0)

Service Intervals

Change engine oil ............... Every 200 hours
Replace oil filter ............... Every 200 hours
Replace fuel filters ............... Every 200 hours
Inspect air filter ............... Every 50 hours
Replace air filter ............... Every 500 hours
Change coolant ............... Every 2000 hours
Valve-lash adjustment ............... Every 500 hours
Check fuel system ............... Every 1000 hours
Compression test ............... Every 1000 hours
Belt inspection ............... Every 100 hours

Service Specifications

Cylinder Liner Inside Diameter, in (mm) ............... 4.0157-4.0165 (102.000-102.022)
Cylinder Liner Roundness, in (mm) ............... 0.0006 (0.015)
Cylinder Liner Taper, in (mm) ............... 0.0008 (0.020)
Connecting Rod Bushing Small End Bore I.D, in (mm) ............... 1.3394-1.3402 (34.020-34.040)
Connecting Rod Big End Bore I.D, in (mm) ............... 2.7165-2.7173 (69.000-69.019)
Crankpin Journal Diameter, in (mm) ............... 2.5583-2.5591 (64.981-65.000)
Connecting Rod Bearing Clearance, in (mm) ............... 0.0014-0.0033 (0.035-0.085)
Connecting Rod Side Clearance, in (mm) ............... 0.0059-0.0118 (0.150-0.300)
Crankshaft Main Journal Diameter, in (mm) ............... 3.1488-3.1496 (79.971-80.000)
Crankshaft Main Bearing Bore I.D, in (mm) ............... 3.3465-3.3473 (85.000-85.022)
Main Bearing Clearance, in (mm) ............... 0.0016-0.0035 (0.040-0.090)
Crankshaft End Play, in (mm) ............... 0.0051-0.0110 (0.130-0.280)
Crankshaft Journal Roundness, in (mm) ............... 0.0002 (0.005)
Crankshaft Journal Taper, in (mm) ............... 0.0004 (0.010)
Piston Skirt Outside Diameter, in (mm) ............... 4.0114-4.0126 (101.890-101.920)
Piston to Cylinder Liner Clearance, in (mm) ............... 0.0031-0.0051 (0.080-0.130)
Piston Pin Bore Inside Diameter, in (mm) ............... 1.3386-1.3390 (34.002-34.012)
Piston Pin Outside Diameter, in (mm) ............... 1.3381-1.3385 (33.989-34.000)
Piston Pin to Piston Pin Bore Clearance, in (mm) ............... 0.0001-0.0009 (0.002-0.023)
Top Ring Groove Width, in (mm) ............... 0.0965-0.0972 (2.450-2.470)
Second Ring Groove Width, in (mm) ............... 0.0799-0.0807 (2.030-2.050)
Oil Ring Groove Width, in (mm) ............... 0.1583-0.1591 (4.020-4.040)
Top Ring End Gap, in (mm) ............... 0.0118-0.0177 (0.300-0.450)
Second Ring End Gap, in (mm) ............... 0.0138-0.0197 (0.350-0.500)
Oil Ring End Gap, in (mm) ............... 0.0098-0.0177 (0.250-0.450)
Cylinder Head Flatness, in (mm) ............... 0.0020 (0.050)
Cylinder Block Top Surface Flatness, in (mm) ............... 0.0020 (0.050)
Intake Valve Stem Outside Diameter, in (mm) ............... 0.3524-0.3531 (8.950-8.970)
Exhaust Valve Stem Outside Diameter, in (mm) ............... 0.3516-0.3524 (8.930-8.950)
Valve Guide Inside Diameter Standard, in (mm) ............... 0.3543-0.3551 (9.000-9.022)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0012-0.0028 (0.030-0.072)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0020-0.0036 (0.050-0.092)
Intake Valve Sinkage below Head Surface, in (mm) ............... 0.0276-0.0433 (0.700-1.100)
Exhaust Valve Sinkage below Head Surface, in (mm) ............... 0.0276-0.0433 (0.700-1.100)
Valve Face Angle, deg ............... 45
Valve Seat Angle, deg ............... 45
Valve Spring Free Length, in (mm) ............... 2.039 (51.8)
Camshaft Journal Outside Diameter, in (mm) ............... 1.9665-1.9673 (49.950-49.970)
Camshaft Bearing Inside Diameter, in (mm) ............... 1.9685-1.9697 (50.000-50.030)
Camshaft Bearing Clearance, in (mm) ............... 0.0012-0.0031 (0.030-0.080)
Camshaft End Play, in (mm) ............... 0.0027-0.0063 (0.070-0.160)
Cam Lobe Height (Intake), in (mm) ............... 1.7012-1.7031 (43.210-43.260)
Cam Lobe Height (Exhaust), in (mm) ............... 1.7457-1.7476 (44.340-44.390)
Idler Gear Bushing Inside Diameter, in (mm) ............... 1.4961-1.4969 (38.000-38.020)
Idler Gear Shaft Outside Diameter, in (mm) ............... 1.4941-1.4949 (37.950-37.970)
Idler Gear Bushing Clearance, in (mm) ............... 0.0012-0.0028 (0.030-0.070)
Rocker Arm Shaft Outside Diameter, in (mm) ............... 0.7854-0.7862 (19.950-19.970)
Rocker Arm Bushing Inside Diameter, in (mm) ............... 0.7874-0.7882 (20.000-20.021)
Rocker Arm Bushing Clearance, in (mm) ............... 0.0012-0.0028 (0.030-0.071)

Tightening Torques

Cylinder Head Bolt (First Stage), lb-ft (Nm) ............... 31.8 (43.1)
Cylinder Head Bolt (Final Stage), deg ............... 150
Crankshaft Main Cap Bolt, lb-ft (Nm) ............... 173.6 (235.4)
Connecting Rod Cap Bolt, lb-ft (Nm) ............... 70.5 (95.6)
Flywheel Retaining Bolt, lb-ft (Nm) ............... 144.7 (196.1)
Flywheel Housing Fixing Bolt, lb-ft (Nm) ............... 94.0 (127.5)
Crankshaft Pulley Bolt, lb-ft (Nm) ............... 217.0 (294.2)
Camshaft Thrust Plate Bolt, lb-ft (Nm) ............... 21.7 (29.4)
Camshaft Gear Bolt, lb-ft (Nm) ............... 72.3 (98.1)
Idler Gear Shaft Bolt, lb-ft (Nm) ............... 43.4 (58.8)
Timing Gear Housing Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Rocker Arm Shaft Bracket Bolt, lb-ft (Nm) ............... 27.5 (37.3)
Cylinder Head Cover Screw, lb-ft (Nm) ............... 10.8 (14.7)
Oil Pan Drain Plug, lb-ft (Nm) ............... 57.9 (78.5)
Oil Pan Mounting Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Oil Pump Mounting Bolt, lb-ft (Nm) ............... 32.5 (44.1)
Oil Cooler Housing Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Water Pump Mounting Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Thermostat Housing Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Exhaust Manifold Mounting Bolt, lb-ft (Nm) ............... 32.5 (44.1)
Intake Manifold Mounting Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Fuel Injection Pump Delivery Valve Holder, lb-ft (Nm) ............... 32.5 (44.1)
Fuel Injection Pump Mounting Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Fuel Injection Pump Gear Nut, lb-ft (Nm) ............... 57.9 (78.5)
Fuel Injector Assembly Fixing Nut, lb-ft (Nm) ............... 43.4 (58.8)
Fuel Injection Pipe Cap Nut, lb-ft (Nm) ............... 21.7 (29.4)
Fuel Return Line Pipe Nut, lb-ft (Nm) ............... 18.1 (24.5)
Fuel Filter Bracket Bolt, lb-ft (Nm) ............... 25.3 (34.3)
Starter Motor Mounting Bolt, lb-ft (Nm) ............... 57.9 (78.5)
Alternator Mounting Bracket Bolt, lb-ft (Nm) ............... 32.5 (44.1)
Alternator Adjusting Link Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Air Compressor Mounting Bolt, lb-ft (Nm) ............... 32.5 (44.1)
Turbocharger Mounting Nut, lb-ft (Nm) ............... 43.4 (58.8)
Turbocharger Oil Inlet Pipe Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Turbocharger Oil Outlet Pipe Bolt, lb-ft (Nm) ............... 18.1 (24.5)
Vibration Damper Mounting Bolt, lb-ft (Nm) ............... 57.9 (78.5)
Flywheel Housing Cover Bolt, lb-ft (Nm) ............... 10.8 (14.7)
Oil Spray Nozzle Bolt, lb-ft (Nm) ............... 21.7 (29.4)
Push Rod Chamber Cover Bolt, lb-ft (Nm) ............... 10.8 (14.7)
Glow Plug, lb-ft (Nm) ............... 18.1 (24.5)
Oil Filter Head Bolt, lb-ft (Nm) ............... 25.3 (34.3)
Cooling Fan Mounting Bolt, lb-ft (Nm) ............... 10.8 (14.7)
Fan Drive Mounting Bolt, lb-ft (Nm) ............... 32.5 (44.1)
Front Engine Mount Bracket Bolt, lb-ft (Nm) ............... 57.9 (78.5)
Rear Engine Mount Bracket Bolt, lb-ft (Nm) ............... 94.0 (127.5)

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• Doosan Engines Specs
  
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