Ford Siyerra + 1.2. Car identification + 2. Maintenance + 3. General data - 4. Engines + 4.1. Petrol engines - 4.2. Diesel engine - 4.2.1. Technical characteristics 4.2.1.1. Block of cylinders 4.2.1.2. Krivoshipno-shatunny mechanism 4.2.1.3. Greasing system 4.2.1.4. Fuel system 4.2.1.5. Tightening moments 4.2.2. Check and adjustment of gaps of valves + 4.2.3. Fuel system + 4.2.4. Nozzles 4.2.5. Glow plugs 4.2.6. Compression check 4.2.7. Air removal from fuel system 4.2.8. Fuel filter 4.2.9. Fuel pump, installation of the beginning of injection of fuel 4.2.10. Adjustment of number of turns of idling + 4.2.11. The repair which is not demanding removal of the engine + 5. Coupling + 6. Transmissions + 7. Driveshaft and back bridge + 8. Steering + 9. Suspension brackets + 10. Brake system + 11. Body + 12. Electric equipment
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Engine type: |
– till December, 1986 (Sierra '83) |
YТТ (PEUGEOT XD2P)
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– since January, 1987 (Sierra '87) |
YТР
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Diameter of the cylinder |
94 mm
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Piston stroke |
83 mm
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Working volume |
2304 cm3
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Pressure of compression:
| – the nominal |
2,5 MPas
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– the minimum |
2,0 MPas
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– an admissible difference between cylinders |
0,5 MPas
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Rated power |
49 kW (67 h.p.)
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Nominal number of turns |
4200 rpm
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Maximum torque |
139 Nanometers
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Number of turns at the maximum moment
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2000 rpm
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Block head цилинров
The head is executed from an easy alloy with the inserted chambers of combustion, saddles and directing valves.
Height of a head of the block of cylinders |
90 ± 0,15 mm
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Maximum size of regrinding of the bottom plane of a head of the block of cylinders |
0,5 mm
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Maximum not planeness of the bottom plane of a head of the block of cylinders: |
– the cross-section |
0,1 mm
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– on a diagonal |
0,2 mm
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Combustion chambers
Vortical chambers of combustion, steel, inserted into a head of the block of cylinders and fixed by means of a ball.
Type of the chamber of combustion |
vortical Ricardo Comet Mark V
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Diameter of a ball |
3 mm
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Vystupaniye of vortical chambers from the bottom plane of a head of the block of cylinders |
0–0,03 mm
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Saddles of valves
Saddles of valves впрессованы in a head of the block of cylinders.
Corner of a working facet of a saddle of the valve:
| – the inlet |
120 °
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– the final |
90 °
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Width of a working facet |
2,2-2,5 mm
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External diameter of saddles of inlet valves: |
– the nominal |
42,275-43,325 mm
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– the repair |
42,475-42,525 mm
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External diameter of saddles of final valves: |
– the nominal |
36,275-36,525 mm
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– the repair |
36,475-36,525 mm
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Directing valves
Directing valves are pressed in a head of the block of cylinders and are identical both for inlet, and to final valves.
External diameter: |
– the nominal |
14,048-14,059 mm
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– the first repair |
14,280-14,290 mm
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– the second repair |
14,579-14,590 mm
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Internal diameter |
8,520-8,542 mm
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Length |
55 mm
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Distance between the directing and bottom plane of a head of the block of cylinders |
27,95-28,05 mm
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Valve
The valve are established in a head of the block of cylinders vertically and in parallel each other (at right angle to the bottom plane of a head of the block of cylinders).
Diameter of a plate: |
– inlet valve |
40,5 mm
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– final valve |
33,5 mm
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Diameter of a core: |
– inlet valve |
8,473-8,495 mm
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– final valve |
8,453-8,475 mm
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The maximum gap of the valve in the directing |
0,15 mm
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Corner of a working facet: |
– inlet valve |
120 °
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– final valve |
90 °
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Full length of the valve |
116,25 mm
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Zaglubleniye of valves of rather bottom plane of a head of the block of cylinders: |
0,75-1,15 mm.
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Working gap of valves (at the cold engine) |
Gap of inlet valves |
0,30 mm
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Gap of final valves |
0,35 mm
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Springs of valves
Are used on two springs on each valve, identical to inlet and final valves.
Free length: |
– internal spring |
41,00 mm
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– external spring |
44,6 mm
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Length under load of 155 N (15,8 kg): |
– internal spring |
22 ± 0,5 mm
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– external spring |
26 ± 0,5 mm
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Diameter of a wire of a spring: |
– internal spring |
2,3 mm
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– external spring |
3,8 mm
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Internal diameter: |
– internal spring |
15,0 0 + 0,40 mm
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– external spring |
23,2 0 + 0,40 mm
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Installation method: the spring end with the compressed rounds, should be from a head of the block of cylinders |
Laying of a head of the block of cylinders
Laying of a head of the block of cylinders was made of a synthetic material and had originally (engines with number below SH 79876) two thickness, and then (engines with number above SH 79876) three thickness. The thickness of laying steals up depending on a vystupaniye of pistons over the top plane of the block of cylinders of the engine. The thickness of laying is identified on number of cuts on its edge.
Vystupaniye of pistons (engines with number below SH 79876):
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– less than 0,84 mm
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laying in thickness of 1,58 mm (designation: 2 cuts)
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– more than 0,84 mm
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laying in thickness of 1,70 mm (designation: 3 cuts)
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Vystupaniye of pistons (engines with number above SH 79876):
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– from 0,69 to 0,79 mm
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Laying in thickness of 1,53 mm (designation: 2 cuts)
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– from 0,79 to 0,89 mm
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laying in thickness of 1,63 mm (designation: 3 cuts)
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– more than 0,89 mm
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laying in thickness of 1,73 mm (designation: 4 cuts)
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As spare parts laying of only new type (three thickness) are made
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