Contents: Main parameters ↳ Cylinder head ↳ Valve seat dimensions (Fig. 2E.20) ↳ Engine cylinder block ↳ Crank mechanism ↳ Pistons ↳ Gas distribution system ↳ Lubrication system ↳ Cooling system ↳ Fuel system ↳ Tightening moments ↳
Main parameters
Engine designation - 1.8 ONS
Engine type:
- naturally aspirated - RTE, RTF.
- turbocharged - RFD.
Cylinder diameter - 82.5 mm.
Piston stroke - 82 mm.
Working volume - 1753 cm³
Compression ratio: 2.8 - 3.4 MPa.
Nominal power
- rTE, RTF engines - 44 kW (60 hp) at 4800 rpm
- rFD engines - 66 kW (90 hp) at 4500 rpm
Maximum torque
- rTE engines. RTF - 110 Nm at 2500 rpm
- rFD engines - 178 Nm at 2000 rpm
Cylinder head
Caution: Regrinding of the cylinder head is not permitted.
Permissible non-flatness of the lower surface of the cylinder head - 0.061 mm
Diameters of the holes of the camshaft bearing seats:
- nominal - 30.500 - 30.525 mm
- repair - 30.575 - 30.600 mm
Tappet seat hole diameters:
- nominal - 35.000 - 35.030 mm
- repair - 35.500 - 35.530 mm
Clearance of pushers in guide bushings - 0.015-0.030 mm
Valve guide hole diameters:
- nominal - 8.000 - 8.035 mm
- repair - 8.263 - 8.288 mm
Diameters of the swirl combustion chamber nests (Fig. 2E.19):
- nominal
- size A - 31.250 - 31.280 mm
- size B - 27.530 - 27.660 mm
- repair
- size A - 31.550 - 31.580 mm
- size B - 27.830 - 27.960 mm
Height of the nests of the swirl combustion chambers (C, Fig. 2E.19):
- nominal - 4.983 - 5.034 mm
- repair - 5.233 - 5.284 mm
Cylinder head gasket
The thickness of the cylinder head gasket is selected depending on the protrusion of the pistons above the upper plane of the cylinder block, taking into account the value of the most protruding piston. The thickness of the gasket is identified by the corresponding designation.
- for cylinder blocks with nominal cylinder diameters - the gasket has cutouts
- for cylinder blocks with repair cylinder diameters (+0.5 or +1.0) - the gasket has a hole
| Piston protrusion (mm) | nominal | repair |
| 0.500 — 0.680 | 2 cutouts | 2 holes |
| 0.681 — 0 740 | 3 cutouts | 3 holes |
| 0.741 — 0.840 | 4 cutouts | 4 holes |
Installation method - the cylinder head gasket is installed with the inscription "OBEN-TOP" in the direction of the head (up).
Combustion chambers
Chamber type - vortex Ricardo Comet Mark V
The protrusion of the combustion chambers from the lower plane of the cylinder head is 0-0.061 mm
Valve seat dimensions (Fig. 2E.20)
Inlet valve:
- Nominal
- size A - 38.00-38.03 mm
- size B - 8.3-8.5 mm
- Repair 1
- size A - 38.20-38.23 mm
- size B - 8.6-8.8 mm
- Repair 2
- size A - 38.40-38.43 mm
- size B - 8.9-9.1mm
Exhaust valve:
- Nominal:
- size A - 33.00-33.03 mm
- size B - 8.8-9.0 mm
- Repair 1:
- size A - 33.20-33.23 mm
- size B - 9.1-9.3 mm
- Repair 2:
- size A - 33.40-33.43 mm
- size B - 9.4-9.6 mm
Valve springs
The springs are the same for both intake and exhaust valves.
Free length - 43 mm
Valves
Inlet valve:
- Valve length - 107.05 - 107.15 mm
- Valve plate diameter - 36.40 - 36.60 mm
Valve stem diameter:
- nominal - 7.82 - 7.97 mm
- 1. Repair - 8.02 - 8.17 mm
- 2. Repair - 8.22 - 8.37 mm
Exhaust valve:
- Valve length 109.15 - 109.25 mm
- Valve plate diameter - 31.90 - 32.10 mm
Valve stem diameter:
- nominal - 7.81 - 7.96 mm
- 1 Repair - 8.01 - 8.16 mm
- 2 Repair - 8.21 - 8.36 mm
Valve clearance (cold)
Intake valve clearance - 0.35 ±0.05 mm
Exhaust valve clearance - 0.50 ±0.05 mm
Adjusting the valve clearance by selecting the thickness of the adjusting plates located in the recess of the tappets.
Range of adjustment plates by thickness 3.00 - 4.75 mm
The difference in thickness of the adjustment plates is 0.05 mm
Pushers
Outer diameter:
- nominal - 34.950 - 34.975 mm
- repair - 35.450 - 35.475 mm
Engine cylinder block
Cylinder block designation - LR 27108
Cylinder diameters:
- nominal:
- group A - 82.500-82.515 mm
- group B - 82.515-82.530 mm
- group C - 82.660-82.675 mm
- group D 82.675-82.690 mm
- repair:
- + 0.5 - 83.000-83.015 mm
- + 1.0 - 83.500-83.515 mm
The diameter of the holes of the main bearing shells is 53.683-53.696 mm
Crank mechanism
Crankshaft
Main journal diameter:
- nominal - 53.970-53.990 mm
- repair -0.25 - 53.720-53.740 mm
- repair -0.50 - 53.470-53.490 mm
Connecting rod journal diameter:
- nominal - 48.970-48.990 mm
- repair -0.25 - 48.720-48.740 mm
- repair -0.50 - 48.470-48.490 mm
Width of the middle main bearing:
- nominal - 31.69-31.75 mm
- repair - 32.07-32.13 mm
Radial clearance of crankshaft main bearings - 0.015-0.062 mm
Crankshaft axial clearance - 0.093-0.306 mm
Maximum friction moment in the crankshaft main bearings (without piston-connecting rod units installed) - 10 Nm
Main bearing shells
Nominal and repair liners, reduced by 0.25 mm and 0.50 mm, are supplied as spare parts.
Connecting rods
Connecting rods are manufactured with four distances between the axes of the head and base holes to ensure the same compression ratio in all engine cylinders. Designations "A". "B". "C" and "D". applied to the side surface of the connecting rod caps determine the selective group of the distance between the axes of the head and base holes. The method of installing the connecting rod relative to the cylinder block, the letter "F. applied to the side surface of the connecting rod, must be on the side of the gas distribution system drive.
Connecting rod bearing seat bore diameter - 52.000-52.020 mm
The diameter of the hole in the connecting rod head bushing is 26.012-26.020 mm
Distance between the axes of the holes in the head and base of the connecting rod:
- group A - 129.880-129.940 mm
- group B - 129.941-130.000 mm
- group C - 130.011-130.060 mm
- group D - 130.061-130.120 mm
Connecting rod bearing shells
Nominal and repair liners are supplied as spare parts: reduced by 0.25 mm and 0.50 mm.
Pistons
RTE, RTF engines
Piston diameters (measured at right angles to the piston pin axis):
- nominal:
- group A - 82.460-82.475 mm
- group B - 82.475-82.490 mm
- group C - 82.620-82.635 mm
- group D - 82.635-82.650 mm
- repair
- group E (+0.5 mm) - 82.961-82.979 mm
- group F (+1.0 mm) - 83.461-83.479 mm
- Piston clearance in cylinder
- groups from A to D - 0.025-0.055 mm
- groups E and F - 0.021-0.054 mm
The protrusion of the piston bottom at TDC above the upper plane of the cylinder block is 0.50-0.84 mm.
RFD Engines
Piston diameters (measured at right angles to the piston pin axis):
- nominal, group A - 82,461-82,479 mm
- nominal, group B - 82.476-82.494 mm
- nominal, group C - 82.621-82.639 mm
- nominal, group D - 82.636-82.654 mm
Piston pins:
Installing the retaining rings in the piston groove, with the cut facing upwards.
Outer diameter of the pin - 25.996-26.000 mm
Piston rings
Installation method: the inscription "Tor" (top) is directed towards the bottom of the piston.
Width of the lock (cut) of the ring located in the cylinder:
- top ring (sealing) - 0.35-0.50 mm
- middle ring (sealing) - 0.35-0.50 mm
- lower ring (oil scraper) - 0.25-0.45 mm
Piston Groove Clearance:
- top ring (sealing) - 0.090-0.122 mm
- middle ring (sealing) - 0.050-0.082 mm
- lower ring (oil scraper) - 0.030-0.065 mm
Flywheel
- Radial runout - 0.13 mm
- Number of teeth on the crown - 135
Gas distribution system
Valve timing (measured at operating valve clearance)
- OZD - 6° before TDC
- ZZD - 32° after BDC
- OZW - 57° before BDC
- ZZW - 7° after TDC
OZD and ZZD - opening and closing of the intake valve, respectively; OZW and ZZW - opening and closing of the exhaust valve, respectively.
Camshaft
RTE, RTF engines
Valve lift:
- inlet - 10 mm
- outlet - 9 mm
Axial clearance - 0.1-0.2 mm
Bearing journal diameter - 27.960-27.980 mm
Bearing clearance of the camshaft - 0.020-0.079 mm
RFD Engines
Valve lift:
- inlet 9 mm
- outlet 10 mm
Axial play - 0.1-024mm
Toothed belt:
Brand - Motorcraft 89 FF GK 288-AB
The tension is adjusted automatically by a roller tensioner.
Replacement frequency - every 60,000 km
Lubrication system
Oil pump
Oil pressure (at 100°C)
- at 750 rpm - 0.075 MPa
- at 2000 rpm - not less than 0.15 MPa
Opening pressure of the bypass valve 0.2 - 0.4 MPa
Oil filter
Make and type - Motorcraft EFL 344
Replacement frequency - every 10,000 km
Motor oil
Quantity - 4.5 dm³ (with 0.4 dm³ in the filter)
Type: All-season oil according to API SG/CD, viscosity according to SAE 10W30, 15W40 or 20W50
Replacement frequency (with filter) - every 10,000 km
Cooling system
Expansion tank
Opening pressure of the two-way valve in the expansion tank cap - 120 kPa
Thermostat
Temperature of opening start - 85°-89°C
Full opening temperature 102±3°C
Coolant
Quantity - 9.3 dm³
Type - a mixture of 60% distilled water and 40% special antifreeze mixture Motorcraft with the designation Ford SSM 97 B 9103 A
Replacement frequency: every 4 years.
Fuel system
Fuel Filter - Brand and Type Ford EFG 3
Air Filter - Brand and Type Motorcraft EFA 18
Fuel pump
Brand and type - Bosch VER 285 or CAV Roto diesel F 18 INA 01.
Idle speed 840-870 rpm.
Maximum speed (no load) 5350±50 rpm.
Injection sequence (cylinder No.1 from the valve timing drive side) - 1 - 3 - 4 - 2.
Pump installation - using an installation tool.
RFD engine fuel pump since 1991
Brand and type - Lucas Diesel 8344 V 795 D
Idle speed - 900 ±100 rpm.
Maximum speed (no load) - 4800 rpm.
Injection sequence (cylinder #1 from the valve timing drive side) - 1 - 3 - 4 - 2
Pump installation - using an installation tool.
RFD engine fuel pump since 1994
Brand and type - Lucas DPC F18 ITCI20
Idle speed: 820-850 rpm.
Maximum speed (no load) - 5350±50 rpm.
Injection sequence (cylinder No.1 from the valve timing drive side) - 1 - 3 - 4 - 2.
Pump installation - using an installation tool.
Nozzles
Injectors - Bosch or CAV RotoDiesel
Sprayer type - Pmteau
Injector opening pressure:
- Bosch 13.5-14 0 MPa
- CAV RotoDiesel 12.0-13.5 MPa
Leakage test - no fuel leakage for 10 seconds under a pressure of 12 MPa
Pressure drop time in the range of nominal injection pressures - 5 - 40 seconds
Glow plugs
Type - rod
Heating temperature - 1150°C
Brand - Bosch 0250 202 018 or Ford EZD 8
Glow plugs on the engine - FORD EDC.
So-called pencil glow plugs (small diameter) are used
Brand and type - Motorcraft EZD 8 or Vega 666 MJ
Operating temperature - 1150"C
Resistance - 0.25 Ohm
Electronic engine control FORD EDC
Acceleration lever position sensor
Brand and type - Lucas 419131-94-300
Resistance between contacts 1 and 2:
- at idle - 5000 Ohm
- at full load - 1000 Ohm
Resistance between contacts 1 and 3 (idle) - 3300-5000 Ohm
Coolant temperature sensor
Make and type - Ford F2AF-12A648-AA
Sensor resistance:
- at 10°C - 58 kOhm
- at 20°C - 37 kOhm
- at 30°C - 24 kOhm
- at 40°C - 16 kOhm
- at 50°C - 11 kOhm
- at 60°C - 7 kOhm
Solenoid vacuum valve:
- Make and type - Ford 92VB-9E882-AB
- Resistance - 4-7 Ohm
- Operating frequency - 140 Hz
Cold engine injection advance corrector:
- Brand and type - Lucas 4410-151294
- Resistance - 65-160 Ohm
Cold Engine Injection Advance Relay:
- Make and type - Ford B74PG-93BG14N089AA
- Control circuit resistance (between contacts 85 and 86) - 75 0m
Injection advance corrector at low engine loads:
- Brand and type - Lucas В12М-08М
- Resistance - 13-18 Ohm
Tightening moments
| Cylinder head mounting bolts (new bolts each time) | |
| — Stage 1 | 20-30 Nm |
| — Stage 2 | 76-92 Nm |
| — Stage 3 | wait 2 minutes |
| — Stage 4 | tighten 90° |
| Cylinder head mounting bolts for engines from 03.92. | |
| — Stage 1 | 10 Nm |
| — Stage 2 | 100 Nm |
| — Stage 3 | wait 3 minutes |
| — Stage 4 | unscrew the bolts sequentially by 180° |
| — Stage 5 | tighten with a torque of 70 Nm |
| — Stage 6 | tighten 120° in sequence |
| Camshaft Bearing Caps | 16-22 Nm |
| Main bearing caps | |
| — Stage 1 | 20-30 Nm |
| — Stage 2 | tighten by 45° |
| Main bearing caps on engines from 03.92. | |
| — Stage 1 | 27 Nm |
| — Stage 2 | tighten by 75° |
| Connecting rod caps | |
| — Stage 1 | 20-30 Nm |
| — Stage 2 | tighten to 60° |
| — Stage 3 | tighten by 20° |
| Flywheel | |
| — Stage 1 | 15-20 Nm |
| — Stage 2 | tighten by 45° |
| — Stage 3 | tighten by 45° |
| Intermediate shaft pulley | 40-51 Nm |
| Fuel pump pulley | 20-25 Nm |
| Fuel pump drive toothed belt tensioner | 40-57 Nm |
| Camshaft pulley | |
| - bolt M6 | 8-10 Nm |
| - bolt M8 | 27-33 Nm |
| Timing Belt Tensioner for Camshaft Drive | 45-55 Nm |
| Rear cover to the cylinder block | 16-21 Nm |
| Front cover to cylinder block | 20-28 Nm |
| Oil pump to cylinder block | 20-25 Nm |
| Intermediate shaft seal | 20-25 Nm |
| Oil pan | 6-9 Nm |
| Fuel pump | 18-22 Nm |
| Cylinder head cover | 3-4 Nm |
| Glow plugs | 25-30 Nm |
| Injectors to the cylinder head | 60-80 Nm |
| Injector Pipeline Connections | 15-25 Nm |
| Intake and exhaust manifolds to the cylinder head | 10-14 Nm |
| Fastening the turbocharger to the exhaust manifold | 38 Nm |
| Exhaust Gas Recirculation Valve Fastening | 20-25 Nm |