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Deutz BF6M1015C Engine

The Deutz BF6M1015C is a heavy-duty, water-cooled, four-stroke V6 diesel engine designed for demanding industrial, construction, and agricultural applications. This turbocharged, charge-air-cooled power unit belongs to the 1015 engine family, known for its robust construction, high power density, and excellent reliability under continuous peak loads. Featuring a compact 90-degree V-configuration, individual cylinder heads, and high-pressure fuel injection, this engine complies with stringent emission standards while delivering high torque at low engine speeds.

The engine employs an overhead valve configuration driven by a central camshaft via pushrods and rocker arms. Each individual cylinder head features four valves: two intake and two exhaust. This four-valve design optimizes gas exchange efficiency, improves volumetric efficiency, and promotes complete fuel combustion to lower thermal loads. The engine features a square cylinder geometry to balance piston speed with combustion efficiency. The cylinder bore diameter measures exactly 132 mm, and the piston stroke length is 145 mm. This configuration yields a total displacement of 11.9 liters across the six cylinders.

Fuel delivery utilizes individual high-pressure injection pumps (unit pumps) dedicated to each cylinder, driven directly by the main camshaft. Short high-pressure fuel lines connect each pump to centrally located multi-hole injection nozzles in the cylinder head. This configuration enables precise injection timing and ultra-high injection pressures, optimizing atomization and ensuring clean, efficient combustion. The primary system includes a mechanical fuel feed pump, a multi-stage filtration system with a water separator, and a mechanical or electronic governor depending on the application specs.

Engine lubrication is managed via a forced-feed circulation system driven by a gear-type oil pump. The system incorporates a full-flow oil filtration setup with spin-on cartridges and an integrated bypass valve to maintain pressure during cold starts. A high-efficiency plate-core oil cooler is integrated directly into the cooling fluid circuit, stabilizing oil temperature under continuous high-load operations.

The engine uses a closed-loop liquid cooling system with forced circulation powered by an integrated centrifugal water pump. Thermostatic valves regulate fluid routing to maintain an optimal operating temperature. The system features a split-circuit setup, utilizing the engine coolant to absorb heat from the engine block while a separate low-temperature circuit or air-to-air intercooler manages the charge-air cooling.

General Technical Data

Engine Specifications

Engine Model ............... Deutz BF6M1015C
Engine Type ............... 4-cycle V-block 6-cylinder direct injection turbocharged liquid-cooled diesel
Number of Cylinders ............... 6
Cylinder Arrangement ............... V-type, 90 deg
Engine Bore, in (mm) ............... 5.20 (132.0)
Engine Stroke, in (mm) ............... 5.71 (145.0)
Displacement, cu.in (L) ............... 726.6 (11.91)
Rated Engine Power, hp (kW) ............... 287-402 (214-300) at 2100 rpm
Rated Engine Speed Range, rpm ............... 1500-2100
Peak Torque, lb-ft (Nm) ............... 933-1460 (1265-1980) at 1300 rpm
Low Idle Speed, rpm ............... 550-650
High Idle Speed, rpm ............... 2300-2450
Aspiration Type ............... Turbocharged and charge air intercooled
Compression Ratio ............... 16.5:1
Firing Order ............... 1-4-2-5-3-6
Cylinder Block Material ............... High-strength grey cast iron mono-block design
Cylinder Head Design ............... Individual separate crossflow heads per cylinder unit
Valves Per Cylinder Assembly ............... 4 valves per head (2 intake and 2 exhaust)
Camshaft Placement Location ............... In-block mid-mounted high-durability gear-driven shaft
Combustion System ............... Direct injection
Cylinder Liners ............... Wet exchangeable cylinder liners
Lubrication System ............... Forced-feed lubrication with gear pump
Oil Pump Type ............... Gear-driven
Oil Filter Type ............... Full-flow spin-on cartridge
Cooling System ............... Liquid-cooled
Water Pump Type ............... Gear-driven centrifugal pump
Air Cleaner Type ............... Dry dual-stage with safety element
Starting System ............... Electric starter motor
Electrical System Voltage, V ............... 12 or 24
Alternator Rating, A ............... 55 or 80

Fuel System

Injection System Type ............... Deutz PLD individual unit pumps
Fuel Injection Pump System ............... Camshaft lobe-driven
Number of Individual Injection Pumps ............... 6
Injection Pressure, psi (bar) ............... 23206 (1600)
Fuel Injector Nozzle Type ............... Multi-hole
Number of Injector Spray Orifices ............... 8
Governor Module Design ............... Electronic Motor Regulator
Fuel Feed Pump Mechanism ............... Gear-driven, mechanical
Fuel Feed Pump Pressure, psi (bar) ............... 72.5-87.0 (5.0-6.0)
Primary Fuel Filter Element ............... Spin-on cartridge element
Secondary Fuel Water Separator ............... Integrated water trap
Fuel Injection Timing Advance Controller ............... Electronic control unit

Dimensions and Weight

Overall Length (front fan flange pulley to flywheel housing face), in (mm) ............... 33.1 (840)
Overall Width (lateral expansion across widest outer manifold surfaces), in (mm) ............... 36.7 (930)
Overall Height (oil pan lowest point to top air intake pipe), in (mm) ............... 46.1 (1170)
Dry Weight (without charging alternator starter or fluid fills), lbs (kg) ............... 1830 (830)
Operating Weight (with all cooling liquids and lubrication oils), lbs (kg) ............... 2095 (950)

Maintenance Data

Service Information

Compression Pressure Test Minimum, psi (bar) ............... 348.0 (24.0)
Compression Pressure Max Cylinder Deviation, psi (bar) ............... 43.5 (3.0)
Oil Pressure at Idle Speed, psi (bar) ............... 21.7 (1.5)
Oil Pressure at Rated Speed, psi (bar) ............... 65.2 (4.5)
Thermostat Opening Temperature, F (C) ............... 181 (83)
Thermostat Full Open Temperature, F (C) ............... 203 (95)
Max Oil Temperature in Oil Pan, F (C) ............... 257 (125)
Intake Valve Clearance, in (mm) ............... 0.008-0.012 (0.20-0.30)
Exhaust Valve Clearance, in (mm) ............... 0.012-0.016 (0.30-0.40)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, 15W-40
API Service Classifications ......................... CG-4, CH-4, CI-4
Engine Oil System Total Capacity, gal (L) ............... 8.9 (34.0)
Engine Oil Min Dipstick Level, gal (L) ............... 5.8 (22.0)
Engine Oil Max Dipstick Level, gal (L) ............... 7.9 (30.0)
Cooling Internal Capacity, gal (L) ............... 12.4 (47.0)

Service Intervals

Change oil and filter ............... Every 500 hours
Replace fuel filters ............... Every 500 hours
Inspect air filter ............... Every 100 hours
Change coolant ............... Every 2 years
Replace air filter ............... Every 1000 hours
Valve clearance adjustment ............... Every 1000 hours
Change coolant ............... 1000 hours or 2 years
Fuel system inspection ............... Every 1500 hours
Compression test ............... Every 3000 hours
Drain water separator ............... As required
Belt inspection ............... As required

Service Specifications

Cylinder Bore Inside Diameter, in (mm) ................ 5.1968 (132.00)
Crankshaft Journal Outside Diameter, in (mm) ................ 4.3307 (110.00)
Crank Pin Outside Diameter, in (mm) ................ 3.7402 (95.00)
Crankshaft End Play, in (mm) ................ 0.0039-0.0118 (0.10-0.30)
Intake Valve Stem Outside Diameter, in (mm) ................ 0.3535 (8.98)
Exhaust Valve Stem Outside Diameter, in (mm) ................ 0.3528 (8.96)
Intake Valve Guide Inside Diameter, in (mm) ................ 0.3543 (9.00)
Exhaust Valve Guide Inside Diameter, in (mm) ................ 0.3543 (9.00)
Intake Valve Stem to Guide Clearance, in (mm) ................ 0.0047 (0.12)
Exhaust Valve Stem to Guide Clearance, in (mm) ................ 0.0059 (0.15)
Intake Valve Spring Free Length, in (mm) ................ 2.4409 (62.00)
Exhaust Valve Spring Free Length, in (mm) ................ 2.4409 (62.00)
Intake Cam Height, in (mm) ................ 2.1654 (55.00)
Exhaust Cam Height, in (mm) ................ 2.1654 (55.00)
Piston Pin Outside Diameter, in (mm) ................ 1.9685 (50.00)
Piston Pin to Piston Bore Clearance, in (mm) ................ 0.00016-0.00055 (0.004-0.014)
Top Ring Side Clearance, in (mm) ................ 0.0039-0.0051 (0.10-0.13)
Second Ring Side Clearance, in (mm) ................ 0.0028-0.0039 (0.07-0.10)
Oil Ring Side Clearance, in (mm) ................ 0.0016-0.0028 (0.04-0.07)
Top Ring End Gap, in (mm) ................ 0.0354 (0.90)
Second Ring End Gap, in (mm) ................ 0.0787 (2.00)
Oil Ring End Gap, in (mm) ................ 0.0472 (1.20)

Tightening Torque Specs

Cylinder Head Bolts, Stage 1 ................ 80 Nm (59 lb-ft)
Cylinder Head Bolts, Stage 2 ................ 160 Nm (118 lb-ft)
Connecting Rod Bolts (M14 x 1.5) ................ 60 Nm (44 lb-ft)
Main Bearing Cap Bolts (M16), Stage 1 ................ 100 Nm (74 lb-ft)
Main Bearing Cap Bolts (M16), Stage 2 ................ 200 Nm (148 lb-ft)
Crankshaft Damper Pulley Bolt (center) ................ 200 Nm (148 lb-ft)
Flywheel Bolts (to crankshaft flange, M12) ................ 100 Nm (74 lb-ft)
Flywheel Housing Bolts (to block, M12) ................ 90 Nm (66 lb-ft)
Camshaft Bearing Cap Bolts (M8) ................ 25 Nm (18 lb-ft)
Rocker Arm Shaft Bracket Bolts (M10) ................ 40 Nm (30 lb-ft)
Valve Cover Nuts (M6) ................ 12 Nm (9 lb-ft).
Injection Pump Mounting Nuts (to block, M10) ................ 50 Nm (37 lb-ft)
Injection Pump Drive Gear Nut (M14) ................ 120 Nm (89 lb-ft)
High-Pressure Fuel Line Nuts (M14) ................ 30 Nm (22 lb-ft)
Injector Hold-Down Clamp Bolts (M8) ................ 25 Nm (18 lb-ft)
Injector Nozzle Holder Assembly (to cylinder head, M14) ................ 70 Nm (52 lb-ft)
Oil Pump Mounting Bolts (M8) ................ 20 Nm (15 lb-ft)
Oil Cooler Mounting Bolts (M10) ................ 40 Nm (30 lb-ft)
Water Pump Mounting Bolts (M8) ................ 20 Nm (15 lb-ft)
Starter Motor Mounting Bolts (M12) ................ 90 Nm (66 lb-ft)
Alternator Pivot Bolt (M10) ................ 40 Nm (30 lb-ft)
Turbocharger Mounting Nuts (M10) ................ 45 Nm (33 lb-ft)
Exhaust Manifold Nuts (M10) ................ 40 Nm (30 lb-ft)
Engine Mount Bracket Bolts (to block, M12) ................ 120 Nm (89 lb-ft)

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• Deutz Engines Specs
  
• Deutz BF6M1015CP Specs
  
• Deutz BF8M1015C Specs
  
• Deutz BF8M1015CP Specs
  

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