Ford Sierra

1982-1993 of release

Repair and car operation



Ford Siyerra
+ 1.2. Car identification
+ 2. Maintenance
- 3. General data
   - 3.1. Cars with petrol engines
      3.1.1. Masses and transfer numbers
      3.1.2. Operational liquids
      - 3.1.3. Changes in a car design from 1984 to 1986.
         3.1.3.1. Engine
         3.1.3.2. Head of the block of cylinders
         3.1.3.3. Block of cylinders of the engine
         3.1.3.4. Krivoshipno-shatunny mechanism
         3.1.3.5. Cranked shaft
         3.1.3.6. Gazoraspredeleniye system
         3.1.3.7. Engine mount
         3.1.3.8. Cooling system
         - 3.1.3.9. Carburetor
            3.1.3.9.1. The Ford carburetor with we change section of a diffuzor
            3.1.3.9.2. Weber carburetors
            3.1.3.9.3. Pierburg carburetor
         3.1.3.10. System of injection of fuel
         3.1.3.11. Ignition system
         3.1.3.12. Coupling
         3.1.3.13. Mechanical four-speed transmission
         3.1.3.14. Mechanical five-speed transmission
         + 3.1.3.15. Automatic transmission of Ford A 4 LD
         3.1.3.16. Power shaft and back bridge
         3.1.3.17. Steering system with the hydraulic booster
         3.1.3.18. Forward suspension bracket
         3.1.3.19. Back suspension bracket
         3.1.3.20. Brake system
         + 3.1.3.21. Electric equipment
         3.1.3.22. General data
      + 3.1.4. Changes in a car design from 1987 to 1989.
      + 3.1.5. Changes in a car design with 1990 till February, 1993.
   + 3.2. Cars with diesel engines
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment





3.1.3.9.2. Weber carburetors

GENERAL INFORMATION

Elements of the two-chamber Weber 84 HF carburetor and 85 HF

And – a cover of the carburetor,
In – the case of the starting arrangement,
With – a cover of the starting arrangement with a bimetallic spring,
D–jet of idling of the II chamber,
Е–vacuum regulator of the second
chambers,
F–step-by-step engine of adjustment of idling (only Weber 85 HF),
G–the screw of adjustment of structure of a mix of idling (the contents WITH),
N – a diaphragm of the accelerating pump,
J–a diaphragm of the enriching device of full loading (full capacity),
To – a diaphragm of the enriching device of average loadings,
L–float,
M – an emulsion tube of the I chamber,
N–jet of idling of the I chamber,
R – the needle valve,
Q–mesh fuel filter,
R–emulsion tube of the II chamber

Installation of the step-by-step engine of adjustment of idling of the Weber carburetor

And – a pusher of the step-by-step engine,

In – a restrictive bolt of the lever of a butterfly valve of a mix

Adjustment of idling of the Weber 85 HF carburetor

The arrow showed the screw of adjustment of structure of a mix of idling.

In the engine 1,6 of dm3 of the LSD type the two-chamber Weber 84 HF 9510 CA carburetor is applied.

From model of 1985 in the engine 2,0 of dm3 of the NET type the Weber 85 HF 9510 CA carburetor (in cars with a mechanical transmission) or Weber 8 HF 9510 DA (in cars with an automatic transmission) is applied. The design of basic elements of these carburetors is identical to the Weber 83 HF carburetors applied earlier in engines 2,0 of dm3.

Weber 84 HF carburetors and 85 HF contain the following new elements:

  – the butterfly valve of a mix of the II chamber copes vacuum, obrazuyemy in an inlet collector;
  – the automatic starting arrangement has electric heating (only 85 HF – the dm3 engine 2,0);
  – the number of turns of idling is regulated by means of the electric step-by-step motor actuating a butterfly valve of the I chamber. This engine receives operating signals from the module of management of ESC II ignition (only 85 HF – the dm3 engine 2,0).

Check and adjustment of Weber carburetors

Below information concerning only check and adjustment of idling, and also removal and installation of the step-by-step engine of management by a butterfly valve of a mix of the 1st chamber idling the Weber 85 HF 9510 CA and DA carburetors applied in engines 2,0 of dm3 of the NET type is provided.

Removal and installation of the step-by-step engine and the main adjustment of idling – the engine 2,0 of dm3 of the NET type

Removal and installation of the step-by-step engine of adjustment of idling do not represent special difficulties.

PERFORMANCE ORDER
1. After installation it is necessary to carry out the main adjustment as follows.
2. To warm up the engine to normal working temperature, to switch off everything consumers of a current and two times to increase number of turns of the engine to size about 2500 rpm.
3. To insert a plate щупа in the thickness of 1 mm between the ends of a pusher (And) (see fig. Installation of the step-by-step engine of adjustment of idling of the Weber carburetor) the step-by-step engine of adjustment of idling and a restrictive bolt (In) the lever of a butterfly valve of a mix. The number of turns of idling of the engine should make 875±25 rpm.
4. If the number of turns has inappropriate size, it is necessary to weaken a lock-nut of a restrictive bolt (In) and, rotating this bolt, to achieve necessary size of number of turns of idling of the engine.
5. To take a plate щупа and to increase at least two times number of turns of the engine to size about 2500 rpm.
6. Again to establish a plate щупа on the corresponding place and to check, whether the correct number of turns of idling of the engine.
7. To take a plate щупа, to check and in case of need to adjust the contents WITH in exhaust gases.

Adjustment of structure of a mix (the contents WITH) idling – the engine 2,0 of dm3 of the NET type

PERFORMANCE ORDER
1. To warm up the engine to normal working temperature.
2. To connect a tachometer and the analyzer of exhaust gases.
3. To hold within about 30 seconds number of turns of the engine at level of 3000 rpm and to release an accelerator pedal.
4. After stabilization of indications of both devices to read the contents WITH idling.
5. In case of need to adjust the contents WITH by means of the screw of adjustment of structure of a mix of idling (see fig. Adjustment of idling of the Weber 85 HF carburetor).
6. To establish a seal on the screw of adjustment of structure of a mix of idling.

Prevention

The number of turns of idling is regulated by the electronic module of management of ignition of ESC II which operates the step-by-step engine turning a butterfly valve of a mix idling. This knot is not subject to adjustment.


Adjusting data of Weber carburetors

Carburetor
84 HF of 9510 SA (1/2 chamber)
85 HF of 9510 SA (1/2 chamber)
85 HF 9510 DA (1/2 chamber)
Diameter of the chamber (mm)
28/30
30/34
30/34
Diameter of a diffuzor (mm)
21/23
25/27
25/27
Main fuel jet
97/110
112/135
110/135
Main air jet
185/190
165/150
160/150
Emulsion tube
F59/F22
F22/F22
F22/F22
Fuel jet of idling
50/40
45/45
45/45
Float installation – from the upper edge (mm)
6,0 ± 0,5
8,0 ± 0,5
8,0 ± 0,5
Deviation of a starting air zaslonka at work of a vacuum regulator (mm)
6,25 ± 0,25
9,0
8,0
Number of turns of the accelerated idling (rpm)
1700 ± 100
Number of turns of idling (rpm)
800 ± 25
800*
800*
The contents WITH (%)
1,0 ± 0,25
1,0 ± 0,25
1,0 ± 0,25

* the Number of turns of idling of the engine is regulated by the electronic module of management of ESC II ignition.