Ford Sierra



Ford Sierra
1.2. Car identification
2. Maintenance service
3. The general data
- 4. Engines
   - 4.1. Petrol engines
      - 4.1.1. Technical characteristics
         4.1.1.1. A head of the block of cylinders
         4.1.1.2. The block of cylinders of the engine
         4.1.1.3. The Krivoshipno-shatunnyj mechanism
         4.1.1.4. System timing
         4.1.1.5. Greasing system
         4.1.1.6. Cooling system
         4.1.1.7. Fuel system
         4.1.1.8. Ignition system
         4.1.1.9. The tightening moments
      4.1.2. Adjustment of backlashes of valves
       4.1.3. Ignition system
       4.1.4. Fuel system
       4.1.5. The repair which is not demanding removal of the engine
      4.1.6. Removal and engine installation
      4.1.7. Engine dismantling
      4.1.8. Identification of co-operating parts
      4.1.9. Engine assemblage
      4.1.10. Replacement of pistons
      4.1.11. Removal and installation of an intermediate shaft
      4.1.12. System timing
      4.1.13. Greasing system
       4.1.14. Cooling system
      4.1.15. A suspension bracket of the power unit
      4.1.16. System of release of the fulfilled gases
    4.2. The diesel engine
5. Coupling
6. Transmissions
7. A kardannyj shaft and the back bridge
8. A steering
9. Suspension brackets
10. Brake system
11. A body
12. An electric equipment





4.1.1.3. The Krivoshipno-shatunnyj mechanism
THE GENERAL DATA

Cranked shaft

The steel cranked shaft leans against five bearings.

Axial люфт
0,08 – 0,28 mm
Diameters of radical necks:
  – The nominal size
56,970 – 56,990 mm
  – The repair size-0,25
56,720 – 56,740 mm
  – The repair size-0,50
56,470 – 56,490 mm
  – The repair size-0,75
56,220 – 56,240 mm
  – The repair size-1,00
55,970 – 55,990 mm
Backlash in radical bearings
0,010 – 0.064 mm

The prevention

Measurement to spend by means of measuring cores Plastigage.


Diameters шатунных necks:
  – The nominal size
51,980 – 52,000 mm
  – The repair size-0,25
51,730 – 51,750 mm
  – The repair size-0,50
51,480 – 51,500 mm
  – The repair size-0,75
51,230 – 51,250 mm
Thickness of persistent half rings:
  – The nominal size
2,30 – 2,35 mm
  – The repair size
2,50 – 2,55 mm

Flywheel

The flywheel is fixed on a flange of a cranked shaft by six bolts.

Intermediate shaft

The intermediate shaft is located in a forward part of the block of cylinders, on the left side. Obes-pechivaet a drive of the distributor of ignition, and also oil and fuel pumps.

Axial backlash – 0,050–0,204 mm.

Rods

Rods are shaped from a steel and in section them has двутавровый a profile. A piston finger запрессован in a rod head.

Diameter of an aperture of a head of a rod
23,964 – 23,976 mm
Finger tightness in a rod head:
0,018 – 0,039 mm
Temperature of heating of a head of a rod in the course of finger installation
250 – 300 WITH
Diameter of an aperture of the basis of a rod
55,000 – 55,020 mm
Internal diameters of apertures шатунных loose leaves:
  – The nominal size
52,006 – 52,044 mm
  – The repair size-0,25
51,756 – 51,794 mm
  – The repair size-0,50
51,706 – 51,744 mm
  – The repair size-0,75
51,256 – 56,294 mm
  – The repair size-1,00
51,006 – 51,044 mm
Backlash in radical bearings
0,006 – 0.064 mm

The prevention

Measurement to spend by means of measuring cores Plastigage.


Admissible неперпендикулярность axes of apertures concerning a rod axis:
  – A head aperture
0,10 mm
  – A basis aperture
0.15 mm

Pistons

Pistons are made of an easy alloy, without flutes on a spending part, with filled in инварным a ring limiting thermal errors of the sizes. In the top part there are three flutes for piston rings. The axis of an aperture of a piston finger is displaced concerning a piston axis. Pistons are delivered in complete sets together with fingers and rods.

Installation method: the arrow at the bottom of the piston should be directed towards a forward part of the engine (towards a system drive timing).

Piston fingers

The fingers made of an alloy of a steel and subjected to thermal processing, запрессованы in heads of rods (hot installation at temperature of a head 250 –300 ) also turn in piston naves.

Length:
  – двигатель1,3 дм3
60,0 – 60,8 mm
  – двигатель1,6 дм3
68,0 – 68,8 mm
  – двигатель2,0 дм3
72,0 – 72,8 mm
Diameter:  
  – A designation red colour
23,994 – 23,997
  – A designation dark blue colour
23,997 – 24,000
  – A designation red colour
22,000 – 24,003
Backlash in piston naves
0,008 – 0,014 mm
Tightness in a rod head
0,018 – 0,039 mm

The sizes of pistons (mm)

The engine
1,3 дм3
1,6 дм3
2,0 дм3
Diameters the nominal standard:
  – Group 1
78,965 – 78,975
87,615 – 87,625
90,765 – 90,775
  – Group 2
78,975 – 78,985
87,625 – 87635
90,775 – 90,785
  – Group 3
78,985 – 78,995
87,635 – 87,645
90,785 – 90,795
  – Group 4
78,995 – 79,005
87,645 – 87,655
90,795 – 90,805
Diameters of the repair sizes:
 – The standard
78,900 – 79,015
87,640 – 87,665
90,780 – 90,805
 – With the admission 0,5
79,490 – 79,515
88,140 – 88,165
91,280 – 91,305
  – With the admission 1,0
79,990 – 80,015
88,640 – 88,665
91,780 – 91,805
Backlash of new pistons in цилинрах
0,015 – 0,050
0,015 – 0,050
0,025 – 0,060

Piston rings

Each piston has three rings: two sealing and one маслосъемное.

Backlash of the lock of sealing rings (located in the cylinder):
  – двигатель1,3 дм3 and двигатель1,6 дм3
0,30 – 0,50 mm
  – двигатель2,0 дм3
0,038 – 0,048 mm
Lock backlash маслосъемного rings
0,40 – 1,40 mm

Arrangement of locks of rings:

 – Sealing – on 150 (in opposite sides) concerning the lock of maslosem th ring;
 – маслосъемного – the lock of a holding apart spring is established according to naprav-leniem arrows at the bottom of the piston; locks of the top and bottom plates are established on 25 mm to the right and to the left from an arrow direction.