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Deutz F3L1011F Engine

The Deutz F3L1011F is a naturally aspirated, 3-cylinder, inline diesel engine designed for heavy-duty industrial, agricultural, and construction applications. Known for its compact footprint and reliable power delivery, this model features an integrated cooling system where the engine oil is utilized as the primary coolant. It operates on a four-stroke cycle and employs direct injection for optimized thermal efficiency and fuel economy. The overhead valve layout and robust block design ensure durability under high load factors.

The engine utilizes an overhead valve design with two valves per cylinder, consisting of one intake valve and one exhaust valve. The valves are operated via pushrods and rocker arms driven by a single camshaft located within the engine block. Valve clearance must be adjusted periodically according to service intervals on a cold engine. The engine features a cylinder bore diameter of 91.0 millimeters and a piston stroke length of 105.0 millimeters. This configuration results in a total displacement of 2.05 liters across all three cylinders.

The fuel system is built around individual, high-pressure injection pumps integrated into the engine block for each cylinder. Fuel is drawn from the tank through a primary fuel filter and delivered to the injection pumps by a mechanical lift pump. The individual pumps then pressurize the fuel and inject it directly into the combustion chamber via multi-hole injection nozzles. Engine speed regulation is maintained by a mechanical centrifugal governor integrated into the timing gear drive.

A forced-feed lubrication system is driven by a gear-type oil pump. Oil is circulated through a full-flow cartridge filter to remove impurities before reaching the main bearings, connecting rod bearings, and camshaft. The lubrication system is unique as it also serves as the heat absorption medium for the engine's thermal management.

The engine uses an integrated oil-cooling system. Heat generated by combustion is absorbed directly by the engine lubrication oil. The hot oil is then circulated through an externally mounted oil cooler, which is cooled by a fan driven by the crankshaft. This eliminates the need for a conventional water jacket, coolant pumps, and anti-freeze solutions, reducing maintenance requirements.

General Technical Data

Engine Specifications

Engine Model ............... Deutz F3L1011F
Engine Type ............... 4-cycle inline 3-cylinder direct injection oil-air cooled diesel
Number of Cylinders ............... 3
Cylinder Arrangement ............... In-line vertical
Engine Bore, in (mm) ............... 3.58 (91.0)
Engine Stroke, in (mm) ............... 4.13 (105.0)
Displacement, cu.in (L) ............... 125 (2.05)
Rated Engine Power, hp (kW) ............... 44.5 (33.1)
Rated Engine Speed, rpm ............... 3000
Peak Torque, lb-ft (Nm) ............... 59.0 (80.0) at 1700 rpm
Maximum Torque, lb-ft (Nm) ............... 121 (90) at 1800 rpm
Minimum Low Idle Speed, rpm ............... 850-950
Maximum High Idle Speed, rpm ............... 3150-3250
Aspiration Type ............... Naturally Aspirated
Standard Operating Speed, rpm ............... 1500-2800
Compression Ratio ............... 18.5:1
Firing Order ............... 1-2-3
Combustion System ............... Direct injection
Cylinder Block Material ............... High-strength cast iron
Cylinder Head Material ............... Cast iron alloy
Crankshaft Material ............... Forged steel with induction hardened journals
Connecting Rod Material ............... Forged steel split-type
Lubrication System Type ............... Full-pressure lubrication with integrated oil cooler
Oil Pump Type ............... Rotary gear pump driven by crankshaft
Oil Filter Type ............... Full-flow spin-on cartridge
Cooling System Type ............... Integrated air-oil cooling system
Cooling Fan Type ............... Belt-driven axial blower fan
Air Cleaner Type ............... Dry type with primary and safety elements
Starting System Type ............... Electric starter motor
Electrical System Voltage, V ............... 12
Alternator Output Capacity, A ............... 55-60

Fuel System

Fuel Injection Pump Type ............... Integrated single unit injection pumps (PFR type)
Number of Fuel Injection Pumps ............... 2
Fuel Injection Pump Drive ............... Driven directly by the engine camshaft
Injection Nozzle Hole Number ............... 5
Fuel Injector Type ............... Multi-hole nozzle holder assembly
Fuel Injector Opening Pressure, psi (bar) ............... 3625.9 (250.0)
Governor Type ............... Mechanical centrifugal governor
Fuel Transfer Pump Type ............... Mechanical plunger or diaphragm
Fuel Transfer Pump Pressure, psi (bar) ............... 5.8-11.6 (0.4-0.8)
Fuel Filter Type ............... Spin-on high efficiency element
Fuel Injection Timing, deg BTDC ............... 11.5-13.5

Dimensions and Weight

Overall Length, in (mm) ............... 20.4 (520)
Overall Width, in (mm) ............... 17.7 (450)
Overall Height, in (mm) ............... 26.9 (685)
Dry Weight with Integrated Cooling System, lbs (kg) ............... 420 (190)
Wet Weight with Operating Fluids, lbs (kg) ............... 460 (210)

Maintenance Data

Service Information

Compression Pressure Range, psi (bar) ............... 362.5-435.1 (25.0-30.0)
Compression Difference Between Cylinders, psi (bar) ............... 43.5 (3.0)
Oil Pressure at Low Idle Speed, psi (bar) ............... 11.6 (0.8)
Oil Pressure at Rated Speed, psi (bar) ............... 43.5-58.0 (3.0-4.0)
Maximum Oil Temperature in Oil Pan, F (C) ............... 257.0 (125.0)
Intake Valve Clearance, in (mm) ............... 0.012-0.016 (0.30-0.40)
Exhaust Valve Clearance, in (mm) ............... 0.020-0.024 (0.50-0.60)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, 15W-40
API Service Classifications ......................... CH-4, CG-4
Engine Oil Capacity with Filter Change, qt (L) ............... 6.3 (6.0)
Engine Oil Capacity without Filter Change, qt (L) ............... 5.8 (5.5)

Service Intervals

Change oil and filter ............... Every 500 hours
Replace fuel filters ............... Every 500 hours
Inspect air filter ............... Every 250 hours
Replace air filter ............... Every 1000 hours
Valve clearance adjustment ............... Every 1000 hours
Fuel system inspection ............... Every 1500 hours
Compression test ............... Every 2000 hours
Drain water separator ............... As required
Belt inspection ............... As required

Service Specifications

Cylinder Bore Inside Diameter ................ 3.5827-3.5835 in (91.000-91.020 mm)
Crankshaft Journal Outside Diameter ................ 2.7485-2.7490 in (69.812-69.825 mm)
Crank Pin Outside Diameter ................ 2.4060-2.4065 in (61.112-61.125 mm)
Crankshaft End Play ................ 0.0039-0.0110 in (0.100-0.280 mm)
Intake Valve Stem Outside Diameter ................ 0.3142-0.3146 in (7.980-7.990 mm)
Exhaust Valve Stem Outside Diameter ................ 0.3134-0.3138 in (7.960-7.970 mm)
Intake Valve Guide Inside Diameter ................ 0.3157-0.3165 in (8.020-8.040 mm)
Exhaust Valve Guide Inside Diameter ................ 0.3157-0.3165 in (8.020-8.040 mm)
Intake Valve Stem to Guide Clearance ................ 0.0012-0.0024 in (0.030-0.060 mm)
Exhaust Valve Stem to Guide Clearance ................ 0.0020-0.0031 in (0.050-0.080 mm)
Intake Valve Spring Free Length ................ 1.8898 in (48.00 mm)
Exhaust Valve Spring Free Length ................ 1.8898 in (48.00 mm)
Intake Cam Height ................ 1.8701-1.8740 in (47.500-47.600 mm)
Exhaust Cam Height ................ 1.8701-1.8740 in (47.500-47.600 mm)
Piston Pin Outside Diameter ................ 1.0236-1.0240 in (26.000-26.010 mm)
Piston Pin to Piston Bore Clearance ................ 0.0003-0.0007 in (0.008-0.018 mm)
Top Ring Side Clearance ................ 0.0024-0.0035 in (0.060-0.090 mm)
Second Ring Side Clearance ................ 0.0016-0.0028 in (0.040-0.070 mm)
Oil Ring Side Clearance ................ 0.0012-0.0024 in (0.030-0.060 mm)
Top Ring End Gap ................ 0.0098-0.0157 in (0.250-0.400 mm)
Second Ring End Gap ................ 0.0118-0.0177 in (0.300-0.450 mm)
Oil Ring End Gap ................ 0.0098-0.0157 in (0.250-0.400 mm)

Tightening Torque Specs

Cylinder Head Bolts (M12), Stage 1 ................ 25 Nm (18 lb-ft)
Cylinder Head Bolts (M12), Stage 2 ................ 50 Nm (37 lb-ft)
Cylinder Head Bolts (M12), Stage 3 ................ 80 Nm (59 lb-ft)
Cylinder Head Bolts (M12), Stage 4 ................ 105-115 Nm (77-85 lb-ft)
Main Bearing Cap Bolts (M12) ................ 60-65 Nm (44-48 lb-ft)
Connecting Rod Cap Bolts (M10) ................ 40-45 Nm (30-33 lb-ft)
Camshaft Bearing Cap Bolts (M8) ................ 20-25 Nm (15-18 lb-ft)
Flywheel Bolts (M10) ................ 35-40 Nm (26-30 lb-ft)
Crankshaft Pulley Bolt (M14) ................ 100-120 Nm (74-89 lb-ft)
Intake Manifold Nuts (M8) ................ 15-20 Nm (11-15 lb-ft)
Exhaust Manifold Nuts (M8) ................ 20-25 Nm (15-18 lb-ft)
Injector Hold-Down Clamp Bolts (M8) ................ 15-18 Nm (11-13 lb-ft)
Glow Plugs (M8) ................ 10-12 Nm (7-9 lb-ft)
Rocker Arm Shaft Bracket Bolts (M8) ................ 20-25 Nm (15-18 lb-ft)
Rocker Arm Adjuster Locknut (M6) ................ 8-10 Nm (6-7 lb-ft)
Valve Cover Nuts (M6) ................ 5-7 Nm (4-5 lb-ft)
Oil Pan Bolts (M6) ................ 8-10 Nm (6-7 lb-ft)
Oil Pump Mounting Bolts (M6) ................ 12-15 Nm (9-11 lb-ft)
Oil Cooler Mounting Bolts (M6) ................ 8-10 Nm (6-7 lb-ft)
Oil Filter Head Bolts (M8) ................ 15-18 Nm (11-13 lb-ft)
Fuel Injection Pump Mounting Nuts (M8) ................ 18-22 Nm (13-16 lb-ft).
Fuel Lift Pump Mounting Bolts (M6) ................ 8-10 Nm (6-7 lb-ft)
Engine Mount (Bracket to Block, M10) ................ 35-40 Nm (26-30 lb-ft)
Starter Motor Bolts (M10) ................ 30-35 Nm (22-26 lb-ft)

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• Deutz Engines Specs
  
• Deutz F2L1011 Specs
  
• Deutz F2L1011F Specs
  
• Deutz F4L1011 Specs
  
• Deutz F4L1011F Specs
  

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