Ford Sierra

1982-1993 of release

Repair and operation of the car

Ford Siyerra
+ 1.2. Identification of the car
+ 2. Maintenance
- 3. General data
   + 3.1. Cars with petrol engines
   - 3.2. Cars with diesel engines
      - 3.2.1. Changes in a car design from 1988 to 1993. Dm3 engine 2,3
         + Dm3 engine 1,8
         + Fuel system
         + The repair which is not demanding removal of the engine Removal and installation of the engine Dismantling of the engine Check of details Check of gaps of a bent shaft and rods Assembly of the engine Lubrication system Cooling system Coupling Mechanical MT 75 five-speed transmission Power shaft and back bridge System of steering Forward suspension bracket Brake system Electric equipment General data
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment

a773976c Dm3 engine 2,3



Since October, 1987 (a code of date of production of "HU") all diesel engines 2,3 of dm3 are equipped new type with a cover of a head of the block of cylinders and laying (from silicone material).


New laying of a head of the block of cylinders can be reused provided that it is removed very carefully and at removal it was not damaged.

At installation of laying of new type it is necessary to arrive as follows.

1. To carefully clear all surfaces of contact of laying with a head of the block of cylinders and a cover; to remove all remains of laying of old type.
2. To apply a path of the blue pressurizing paste (which is in packing together with laying) on the condensed surface of a cover of a head of the block of cylinders 1,5-2 mm wide.
3. To establish laying on a cover of a head of the block of cylinders and to wait 45 minutes, the pressurizing paste will not dry yet.
4. To oil the surface of contact of laying of a cover on a head of the block of cylinders
5. To establish a cover and to tighten nuts of fastening of a cover the moment of 4 Nanometers.


Excess of this moment of tightening of nuts will cause laying damage.


Adjustment of a tension

Normal operation of the units of the engine put in action by maple belts requires the corresponding tension of these belts.


If you have no the special device for check of a tension of maple belts, then it is necessary to regulate them so that when pressing by a thumb on a half of the greatest piece belts caved in on 4 mm.

Tension of maple belts

Belt type
Tension (Nanometer)
New belt
The belt which was in the use
Belt of the drive of the generator and pump of cooling liquid
4 – 50
30 – 40
Fan drive belt (with a natyazhitel of a belt)
30 – 40
20 – 30
Belt of the drive of the fan and pump of the hydraulic booster of system of steering
55 – 65
35 – 45
Belt of the drive of the vacuum pump
20 – 30
30 – 40


Tightening of bolts of fastening of a flywheel "on a cross" and in two stages is recommended:

 – 1 stage: moment of 20 Nanometers;
 – 2nd stage: moment of 100 Nanometers.

Other information concerning a technical characteristic, adjustment and repair of the diesel engine 2,3 of dm3 is provided in subsection 4.2.