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Deutz BF6M1012E Engine

The Deutz BF6M1012E is a heavy-duty, water-cooled, four-stroke, 6-cylinder in-line diesel engine featuring turbocharging and charge-air cooling. Engineered for versatile application in agricultural, construction, and industrial machinery, this model belongs to the liquid-cooled 1012 series. It is characterized by its compact design, integrated cooling system options, and high power-to-weight ratio. The "E" designation indicates an external or specific industrial specification layout, ensuring high torque backup and structural durability under continuous-duty operating conditions.

The engine utilizes an overhead valve (OHV) configuration driven by a single camshaft located in the engine block via pushrods and rocker arms. Each cylinder is equipped with two valves: one intake valve and one exhaust valve. Valve clearance must be checked and adjusted periodically according to service intervals, measured when the engine is cold. The internal cylinder dimensions feature a bore diameter of 94 mm and a piston stroke length of 115 mm. This under-square design provides a total displacement of 4.78 liters (4764 cc) across all six cylinders, favoring optimal thermal efficiency and a high torque curve profile.

The fuel injection system is built around high-pressure, unit-injection pumps (MVS system) dedicated to each individual cylinder. These plug-in pumps are driven directly by the main camshaft, optimizing injection timing and delivery pressure. Fuel is drawn from the supply tank through a primary fuel filter and water separator by a mechanical fuel transfer pump. It is then delivered to the injection pumps, which feed the multi-hole injection nozzles directly into the omega-shaped combustion chamber in the piston crown for optimal direct-injection combustion.

Lubrication is managed via a forced-feed circulation system driven by a gear-type oil pump. The system features a full-flow oil filtration setup with a spin-on cartridge filter and an integrated paper element bypass. An integrated plate-type engine oil cooler, cooled by the engine coolant loop, maintains optimal oil temperature to protect critical bearing surfaces and hydraulic components.

The engine utilizes a liquid-cooling architecture filled with a water-glycol coolant mixture to provide frost and corrosion protection. The coolant circulation is forced by a centrifugal water pump driven by a V-belt. Temperature regulation is governed by an integrated wax-element thermostat that controls flow to the radiator loop. A piston-cooling system via oil spray nozzles is also incorporated to manage thermal loads on the piston crowns.

General Technical Data

Engine Specifications

Engine Model ............... Deutz BF6M1012
Engine Type ............... 4-stroke inline 6-cylinder direct injection liquid-cooled turbocharged diesel
Number of Cylinders ............... 6
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 3.70 (94.0)
Engine Stroke, in (mm) ............... 4.53 (115.0)
Displacement, cu.in (L) ............... 292.3 (4.79)
Rated Engine Power, hp (kW) ............... 118-165 (88-123)
Rated Engine Speed, rpm ............... 2000-2500
Peak Torque ............... 330-416 lb-ft (447-564 Nm) at 1400-1600 rpm
Minimum Idle Speed, rpm ............... 650-700
Aspiration Type ............... Turbocharged
Compression Ratio ............... 17.5:1
Firing Order ............... 1-5-3-6-2-4
Valve Configuration ............... 2 valves per cylinder design overhead layout
Cylinder Block Type ............... Cast iron with wet liners
Cylinder Head Type ............... Single cast iron block crossflow design
Lubrication System ............... Forced feed full-pressure oil circuit
Oil Pump Type ............... Gear-driven integrated rotary pump
Oil Filter Type ............... Full-flow spin-on cartridge oil filtration
Cooling System ............... Thermostatically controlled liquid cooling
Water Pump Type ............... Belt-driven internal centrifugal pump
Air Cleaner Type ............... Dry heavy duty dual-stage system
Starting System ............... Electric starter motor actuation
Electrical System ............... 12V or 24V options
Alternator Rating, Amps ............... 55 or 80 variants

Fuel System

Fuel Injection Pump Type ............... Bosch individual unit pumps
Injection Pump Control ............... Mechanical
Fuel Injection Pressure, psi (bar) ............... 23206.0 (1600.0)
Fuel Injector Type ............... Multi-hole precision atomizing nozzles assembly units
Fuel Injector Opening Pressure, psi (bar) ............... 3625.0 (250.0)
Feed Pump Type ............... Camshaft driven, plunger
Fuel Filter System Type ............... Spin-on canister fuel cartridge element
Governor Type ............... Mechanical centrifugal or optional electronic
Fuel Lift Pump Supply Pressure, psi (bar) ............... 14.5-29.0 (1.0-2.0)
Fuel System Venting Mechanism ............... Manual bleeding screw element

Dimensions and Weight

Overall Length, in (mm) ............... 44.1 (1120.0)
Overall Width, in (mm) ............... 26.7 (678.0)
Overall Height, in (mm) ............... 32.8 (834.0)
Total Dry Weight, lbs (kg) ............... 1091.3 (495.0)
Total Wet Weight, lbs (kg) ............... 1157.4 (525.0)

Maintenance Data

Service Information

Compression Pressure, psi (bar) ............... 362.5-435.1 (25.0-30.0)
Coolant Thermostat Opening Temp, F (C) ............... 181.4 (83.0)
Fully Open Thermostat Temp, F (C) ............... 203.0 (95.0)
Minimum Oil Pressure at Low Idle, psi (bar) ............... 11.6 (0.8)
Minimum Oil Pressure at Rated Speed, psi (bar) ............... 43.5 (3.0)
Intake Valve Clearance, in (mm) ............... 0.012 (0.30)
Exhaust Valve Clearance, in (mm) ............... 0.020 (0.50)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, 15W-40
API Service Classifications ......................... CH-4, CI-4
Engine Oil Capacity High Level, qts (L) ............... 14.8 (14.0)
Engine Oil Capacity Low Level, qts (L) ............... 11.6 (11.0)
Total Engine Oil Capacity, qts (L) ............... 16.4 (15.5)
Engine Coolant Capacity, qts (L) ............... 10.0 (9.5)

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 500 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) ................ 3.7008 (94.00)
Crankshaft Journal Outside Diameter, in (mm) ................ 2.7559 (70.00)
Crank Pin Outside Diameter, in (mm) ................ 2.1654 (55.00)
Crankshaft End Play, in (mm) ................ 0.0039-0.0118 (0.10-0.30)
Intake Valve Diameter, in (mm) ............... 1.57 (40.0)
Exhaust Valve Diameter, in (mm) ............... 1.42 (36.0)
Intake Valve Stem Outside Diameter, in (mm) ................ 0.3142 (7.98)
Exhaust Valve Stem Outside Diameter, in (mm) ................ 0.3134 (7.96)
Intake Valve Guide Inside Diameter, in (mm) ................ 0.3150 (8.00)
Exhaust Valve Guide Inside Diameter, in (mm) ................ 0.3150 (8.00)
Intake Valve Stem to Guide Clearance, in (mm) ................ 0.0024 (0.06)
Exhaust Valve Stem to Guide Clearance, in (mm) ................ 0.0031 (0.08)
Intake Valve Spring Free Length, in (mm) ................ 2.3228 (59.00)
Exhaust Valve Spring Free Length, in (mm) ................ 2.3228 (59.00)
Intake Cam Height, in (mm) ................ 1.8819 (47.80)
Exhaust Cam Height, in (mm) ................ 1.8819 (47.80)
Piston Pin Outside Diameter, in (mm) ................ 1.3386 (34.00)
Piston Pin to Piston Bore Clearance, in (mm) ................ 0.0002-0.0005 (0.004-0.012)
Top Ring Side Clearance, in (mm) ................ 0.0035-0.0047 (0.09-0.12)
Second Ring Side Clearance, in (mm) ................ 0.0024-0.0035 (0.06-0.09)
Oil Ring Side Clearance, in (mm) ................ 0.0016-0.0028 (0.04-0.07)
Top Ring End Gap, in (mm) ................ 0.0315 (0.80)
Second Ring End Gap, in (mm) ................ 0.0709 (1.80)
Oil Ring End Gap, in (mm) ................ 0.0354 (0.90)

Tightening Torque Specs

Cylinder Head Bolts, Step 1 ................ 30 Nm (22 lb-ft)
Cylinder Head Bolts, Step 2 ................ 60 Nm (44 lb-ft)
Cylinder Head Bolts, Step 3 ................ 90 Nm (66 lb-ft)
Cylinder Head Bolts, Step 4 (final) ................ 120 Nm (89 lb-ft)
Connecting Rod Cap Bolts ................ 65-70 Nm (48-52 lb-ft)
Main Bearing Cap Bolts ................ 100-110 Nm (74-81 lb-ft)
Flywheel Bolts (to Crankshaft Flange) ................ 95-105 Nm (70-77 lb-ft)
Crankshaft Pulley Bolt (Front Damper) ................ 250-280 Nm (184-207 lb-ft)
Camshaft Drive Gear Bolt ................ 80-90 Nm (59-66 lb-ft)
Individual Injection Pump Mounting Nuts (to Crankcase) ................ 25-30 Nm (18-22 lb-ft)
High-Pressure Injection Lines (Injector End, Pump End) ................ 25 Nm (18 lb-ft)
Injector Hold-Down Clamp Bolts ................ 25-30 Nm (18-22 lb-ft)
Intake Manifold Bolts ................ 20-25 Nm (15-18 lb-ft)
Exhaust Manifold Nuts (to Cylinder Head) ................ 30-35 Nm (22-26 lb-ft)
Turbocharger Mounting Nuts (to Exhaust Manifold) ................ 40-45 Nm (30-33 lb-ft)
Turbocharger Oil Feed Line Fittings ................ 20-25 Nm (15-18 lb-ft)
Oil Pan Bolts (Stamped Steel Pan) ................ 12-15 Nm (9-11 lb-ft)
Valve Cover Bolts (Perimeter and Center) ................ 8-10 Nm (6-7 lb-ft)
Thermostat Housing Bolts ................ 15-20 Nm (11-15 lb-ft)
Water Pump Mounting Bolts (to Cylinder Block) ................ 20-25 Nm (15-18 lb-ft)
Starter Motor Mounting Bolts ................ 40-45 Nm (30-33 lb-ft)
Alternator Mounting Bracket Bolts ................ 30-35 Nm (22-26 lb-ft)
Engine Mount Feet Bolts (to Block) ................ 60-70 Nm (44-52 lb-ft)
Oil Drain Plug (Oil Pan) ................ 35-40 Nm (26-30 lb-ft)

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• Deutz Engines Specs
  
• Deutz BF4M1012 Specs
  
• Deutz BF4M1012E Specs
  
• Deutz BF4M1012EC Specs
  
• Deutz BF4M1012C Specs
  
• Deutz BF6M1012 Specs
  

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