FORD SCORPIO

1985-1994 of release

Repair and car operation



Ford Skorpio
+ 1.1. Car identification
+ 2. Maintenance service
- 3. Engines
   + 3.1. Engine OHC
   + 3.2. Engine DOHC
   + 3.3. Engine V6
   + 3.4. Ignition and engine management systems
   - 3.5. Diesel engines
      3.5.1. A technical characteristics
      3.5.2. The repair which is not demanding removal of the engine
      3.5.3. Check and adjustment of backlashes of valves
      + 3.5.4. Fuel system
      + 3.5.5. A head of the block of cylinders
      3.5.6. Removal and engine installation
      + 3.5.7. Dismantling, repair and engine assemblage
      3.5.8. turbocharger
      + 3.5.9. Greasing system
      + 3.5.10. Cooling system
      3.5.11. Typical malfunctions of the engine
+ 4. Cooling system
+ 5. Fuel system
+ 6. Coupling
+ 7. Transmissions
+ 8. A kardannyj shaft and the back bridge
+ 9. A steering
+ 10. Suspension brackets
+ 11. Brake system
+ 12. Wheels and tyres
+ 13. A body
+ 14. An electric equipment



3.5.1. A technical characteristics
THE GENERAL DATA

THE ENGINE

Engine code (is on the block of cylinders near to probeом)
STR, N-STR, SFA, SF, 4AB, 4BA, 4CA
Quantity of cylinders
4 abreast
Operating procedure of cylinders
1–3–4–2
Diameter of the cylinder
94,00 mm
Piston stroke
90,0 mm
Working volume
2499 sm3
Compression degree
23,0
Pressure at проворачивании the engine a starter
20 – 25
Capacity of kw/h.p.:
  – Engine STR
51/69 at 4200 rpm.
  – Engine SFA
68/92 at 4150 rpm.
  – Engine SF
85/115 at 4200 rpm.
The maximum twisting moment:
  – Engine STR
148 Nanometers at 2000 rpm.
  – Engine SFA

201 Nanometers at 2000 rpm.

  – Engine SF

270 Nanometers at 2200 rpm.

HEAD OF THE BLOCK OF CYLINDERS

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
The maximum reduction of height of a head at processing
0,5 mm
Maximum неплоскостность the bottom plane of a head of the block of cylinders
0,15 mm
Diameter of an axis of levers
18,96 – 19,00 mm

Lining of a head of the block of cylinders

Linings of a head of the block of cylinders were made of a synthetic material and two thickness, and then three thickness had originally. The thickness of a lining steals up depending on выступания pistons over the top plane of the block of cylinders of the engine. The thickness of a lining is identified on number of cuts on its edge.

Выступание pistons
Thickness of a lining
From 0,69 to 0,79 mm
1,53 mm (a designation: 2 cuts)
From 0,79 to 0,89 mm
1,63 mm (a designation: 3 cuts)
More than 0,89 mm
1,73 mm (a designation: 4 cuts)

As spare parts linings only new type (three thickness) are made.

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
Diameter of a ball
3 mm
Выступание vortical chambers from the bottom plane of a head of the block of cylinders
0 – 0,03 mm

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
  – The final
90
Width of a working facet
2,2 – 2,5 mm

Directing valves

Directing valves запрессованы in a head of the block of cylinders also are identical both for inlet, and to final valves.

External diameter:
  – The nominal
14,048 – 14,059 mm
  – The first repair
14,280 – 14,290 mm
  – The second repair
14,579 – 14,590 mm
Internal diameter
8,520 – 8,542 mm
Length
55 mm
Distance between a directing and bottom plane of a head of the block of cylinders
27,95 – 28,05 mm

Valves


Valves 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).

Corner of a working facet:
  – The inlet valve
120
  – The final valve
90
Working backlash of valves on the cold engine (in four hours after last start):
  – The engine without pressurisation:
     • the inlet valve
0,30 – 0,35 mm
     • the final valve
0,30 – 0,35 mm
  – The engine with a turbo-supercharging:
     • the inlet valve
0,10 – 0,20 mm
     • the final valve
0,20 – 0,30 mm
Height of lifting of valves:
  – The inlet valve
8,95 (Turbo 8,48) mm
  – The final valve
8,22 (Turbo 8,27) mm
Distance from the bottom plane of a head of the block of cylinders to a valve plate:
  – The inlet valve
0,75 – 1,25 mm
  – The final valve
1,05 – 1,45 mm

The sizes of valves

The inlet valve:
  – Length
116,25 mm
  – Diameter of a plate of the valve
42,5 mm
  – Diameter of a core
8,473 – 8,495 mm
  – A thickness of a working edge of a plate of the valve
2,2 – 2,5 mm
The final valve:
  – Length
116,25 mm
  – Diameter of a plate of the valve
35,5 mm
  – Diameter of a core
8,453 – 8,475 mm
  – A thickness of a working edge of a plate of the valve
2,2 – 2,5 mm
As much as possible admissible backlash between a core of the valve and the directing plug
0,15 mm

Springs of valves

Length of a spring a free condition:
  – The external
44,6 mm
  – The internal
41,0 mm
Diameter of a wire of a spring:
  – The external
4,6 mm
  – The internal
2,4 mm

THE BLOCK OF CYLINDERS OF THE ENGINE

The block of cylinders of the engine is made of pig-iron.

Quantity of radical necks
5
Diameter of the cylinder:
  – A nominal class And
94,000 – 94,015 mm
  – Nominal class B
94,015 – 94,030 mm
  – A repair 1 class With
94,200 – 94,215 mm
  – Repair 1 class D
94,215 – 94,230 mm
  – Repair 2 class Е
94,400 – 94,415 mm
  – Repair 2 class F
94,415 – 94,430 mm
  – Repair 3 class G
94,600 – 94,615 mm
  – Repair 3 class H
94,615 – 94,630 mm
  – Repair 4 class S
94,800 – 94,815 mm
  – Repair 4 class K
94,815 – 94,830 mm
Diameter of a nest of a pusher:
  – The nominal
24,00 – 24,03 mm
  – The repair
24,20 – 24,23 mm
Backlash between a pusher and a nest
0,04 – 0,08 mm

KRIVOSHIPNO-SHATUNNYJ THE MECHANISM

Cranked shaft

Number of radical necks
5
Axial люфт a cranked shaft
0,08 – 0,29 mm
Fixing from axial moving
Persistent half rings
Thickness of persistent half rings:
  – The nominal
2,30 – 2,33 mm
  – The repair
2,50 – 2,53 mm
Backlash in radical bearings
0,040 – 0,098 mm
Diameter of radical necks:
  – The standard
59,994 – 60,021 mm
  – Reduced by 0,30 mm
59,694 – 59,721 mm
  – Reduced by 0,50 mm
59,494 – 59,521 mm
  – Reduced by 0,80 mm
59,194 – 59,221 mm
Length of a neck:
  – A lobby
38,40 – 38,55 mm
  – The intermediate
30,4 – 30,6 mm
  – The central
37,76 – 37,81 mm
  – The back
37,84 – 38,04 mm
Backlash in necks
0,040 – 0,098 mm
Diameter шатунных necks:
  – The nominal
54,994 – 55,021 mm
  – Repair (-0,3)
54,694 – 54,721 mm
Length of a neck
36,0 – 36,1 mm
Width шатунного the loose leaf
29,0 mm
The maximum effort проворачивания a cranked shaft
60 Nanometers

Radical loose leaves

These are thin-walled loose leaves with a cover from a steel sheet and an antifrictional material from a tsinko-aluminium alloy.

Width of loose leaves:
  – Forward, average and back
29,80 mm
  – The intermediate
21,80 mm

Rods
Aperture of a head of a rod:
  – Top (under the plug)
32,975 – 33,000 mm
  – The bottom
58,737 – 58,750 mm
The rod plug:
  – Internal diameter
30,007 – 30,020 mm
  – External diameter
33,000 – 33,025 mm
Axial backlash on a neck of a cranked shaft
0,10 – 0,25 mm
Backlash between the loose leaf and шатунной a neck
0,040 – 0,092 mm

Piston fingers

The finger is made of a steel and superficially tempered. The finger rotates in the piston and the plug of a head of a rod (a so-called floating finger) and is fixed from longitudinal moving by two spring lock rings.

Diameter of a finger:
  – Engine STR
29,994 – 30,000 mm
  – Engine SFA
32,000 mm

Pistons

Pistons are made of an aljuminievo-silicon alloy. The maximum difference of weights of the complete set of pistons of the engine should not exceed 5

Installation method in the cylinder: deepenings at the bottom of the piston (for plates of valves and the combustion chamber) should be from outside the fuel pump.
Diameter of the piston (measurements are made on distance of 15,8 mm from the piston bottom to perpendicularly piston finger):
  – A nominal class And
93,855 – 93,900 mm
  – Nominal class B
93,900 – 93,915 mm
  – A repair 1 class With
94,085 – 94,100 mm
  – Repair 1 class D
94,100 – 94,115 mm
  – Repair 2 class Е
94,285 – 94,300 mm
  – Repair 2 class F
94,300 – 94,315 mm
  – Repair 3 class G
94,485 – 94,500 mm
  – Repair 3 class H
94,500 – 94,515 mm
  – Repair 4 class S
94,685 – 94,700 mm
  – Repair 4 class K
94,700 – 94,715 mm
Выступание the piston from the block of cylinders of the engine
0,50 – 0,92 mm
(Turbo 0,40 – 0,87 mm)

Piston rings

On each piston two sealing rings and one маслосъемное, consisting of three details are established.
Piston rings:
  – The sealing top
Chromeplated, spherical
  – компрессионное
With dredging (upwards)
  – маслосъемное
U-shaped

Backlashes of locks of piston rings (established in the cylinder):
  – The top sealing ring
0,40 – 0,65 mm
(Turbo 0,25 – 0,50 mm)
  – компрессионное a ring
0,35 – 0,60 mm
(Turbo 0,20 – 0,40 mm)
  – маслосъемное a ring
0,15 – 0,30 mm
(Turbo 0,15 – 0,45 mm)
Height of rings:
  – The sealing top
1,978 – 1,990 mm
  – компрессионное
1,978 – 1,990 mm
  – маслосъемное
4,478 – 4,490 mm

SYSTEM GAZORASPREDELENIJA

The system timing contains a camshaft established in the block of cylinders, pushers, cores of pushers, levers of valves and the valve.

The camshaft is put in action двухрядной by a chain from a cranked shaft.

Phases timing:
  – Opening of inlet valves
8 before ВМТ
  – Closing of inlet valves
40 after НМТ
  – Opening of inlet valves
56 before НМТ
  – Closing of inlet valves
12 after ВМТ

ВМТ and НМТ accordingly the top and bottom dead points.

Camshaft

The camshaft rotates in three bearings with a drive a chain.

Diameters of necks of a camshaft
41,925 – 41,950 mm
Working backlash of necks of a camshaft
0,05 – 0,11 mm
Axial люфт a camshaft
0,05 – 0,15 mm

GREASING SYSTEM

Greasing under pressure provides шестеренчатый the oil pump put in action from a camshaft through an angular tooth gearing. The greasing system has the replaced filter and an oil radiator.

Type of the oil pump
шестеренчатый
Engine oil volume:
  – Without the filter
5,0 дм3
  – With the filter
5,6 дм3
Engine oil type
API SE/CD or SF/CD
Viscosity of engine oil at temperature:
  – From 20 With to +30 С
SAE 10W-30
  – Above-20 With
SAE 10W-40/10W-50
  – Above-15 With
SAE 15W-40/15W-50
  – More low-20 With
5W-30
Periodicity of replacement
Each 7500 km of run or time in six months

The gauge of pressure of oil

The gauge of pressure of oil is located in the holder of the oil filter.

Pressure of fire of a control bulb
0,08 – 0,10 МПа

COOLING SYSTEM

The closed contour of cooling with the nonfreezing liquid circulating under pressure, contains a radiator, a broad tank and the pump of a cooling liquid. Removal of air from system occurs automatically after engine start.

The pump of a cooling liquid

The centrifugal pump of a cooling liquid located on a forward wall of the block of cylinders, is put in action клиновым by a belt. The pump of a cooling liquid is not under repair and in case of malfunction it is necessary to replace it.

Diameter of a rotor
60 mm

The thermostat

The wax thermostat is located in one case with the pump of a cooling liquid.
Mark
Calorstat
Temperature of the beginning of opening
72 WITH
Temperature of full opening
81 WITH
The minimum valve stroke
7,5 mm

Cooling liquid
Quantity
9,5 дм3
Type
Special nonfreezing liquid Ford SQM 97 B 9103A
Periodicity of service
Level check each 7500 km of run (does not demand periodic replacement of a cooling liquid)

FUEL SYSTEM

The fuel system contains distributive fuel pump CAV Roto Diesel.

Fuel the pump

Роторный distributive fuel pump Roto Diesel is equipped by the hydraulic device of increase in a dose of fuel during cold start with automatic support of the raised number of turns of the idling, operated термостатически, and the electromagnetic valve of deenergizing of the engine (valve STOP), stopping fuel giving.

Mark and type
Roto Diesel or Lucas Roto Diesel
Injection order (the cylinder №1 from outside a flywheel)
1–3–4–2
The forcing beginning
Position of the piston of 1st cylinder of the engine of 2,85 mm before ВМТ or 18 before ВМТ
Number of turns of idling:
  – Without pressurisation
800 rpm.
  – With a turbo-supercharging
875 – 900 rpm.
Number of turns of the accelerated idling (the cold engine)
880 – 930 rpm.
The maximum number of turns (without loading)
4800 – 4850 rpm.
Time of reduction of turns with maximum before idling
5 seconds
Турбонагнетатель
Garret AiResearch T03

Atomizers

Atomizers are screwed in in a head of the block of cylinders.

The case of atomizers
Roto Diesel
Or Bosch КСА 30 S 44
Pressure of opening of an atomizer:
  – Without pressurisation
11,5 0,5 МПа
  – With a turbo-supercharging
13,0 0,5 МПа

Candles накаливания

Mark and type
Bosch, Beru, Lucas or Champion CH68
Control temperature of heating of candles (within 7 seconds at the surrounding temperature 20 )
850 WITH

THE TIGHTENING MOMENTS

Bolts of fastening of a head of the block of cylinders:
  – 1 stage
30 Nanometers
  – 2 stage
70 Nanometers
  – 3 stage – to unscrew bolts in the order of a tightening on 90 and repeatedly to tighten
70 Nanometers
  – 4 stage – after 10 minutes of work of the engine at 3000 rpm and cooling within 4 hours and to draw twice (once *) (to unscrew on 90 and to tighten)
70*/80 Nanometers
  – 5 stage
To tighten on 120
Counternuts of adjusting bolts of levers
12,5 – 17,5 Nanometers
Cover of a head of the block of cylinders
3 – 4 Nanometers
Nuts of internal racks of an axis of levers
17 – 22 Nanometers
Cover of pushers
5 – 7,5 Nanometers
Masloslivnaja stopper
7,5 – 12,5 Nanometers
Маслоприемник
5 – 7,5 Nanometers
Pipe of a measuring instrument of level of oil
20 – 30 Nanometers
Covers of radical bearings
100 – 120 Nanometers
Covers шатунных bearings
53 – 62 Nanometers
Flywheel:
  – 1 stage
15 Nanometers
  – 2 stage
95 Nanometers
Pulley of a cranked shaft
240 – 260 Nanometers
The oil pump
25 – 30 Nanometers
Stoppers of the oil pump
80 – 100 Nanometers
Cover of the oil pump
5 – 7,5 Nanometers
Скоба for engine lifting
10 – 12 Nanometers
Stopper plum of a cooling liquid on the block of cylinders
20 – 30 Nanometers
Fastening nut муфты the radiator fan
30 – 40 Nanometers
Fastening of the mechanism of a tension of a belt of the generator
21-25 Nanometers
Candles накаливания
30 – 40 Nanometers
Transmission to the engine:
  – Type
40 – 50 Nanometers
  – Type МТ-75
70 – 90 Nanometers

* It is applied only to bolts in length of 70 and 95 mm.