Opel Kadett E

1984-1991 of release

Repair and car operation

3.2.3.3.1. Check and adjustment of turns of idling

THE GENERAL DATA

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The prevention

For checks the special diesel tachometre is required.

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DIESEL ENGINES 16D AND 16DA EARLY RELEASE

The screw of adjustment of turns of idling of the diesel engine 16D

The screw of adjustment of turns of idling of the diesel engine 16D (it is specified by an arrow) is located on ТНВД.

Adjustment of turns of idling of the diesel engine 16D


The basic difficulty at adjustment of turns of idling is measurement of turns which on the diesel engine is carried out by special tachometres which are sensitive to passage of a certain label on a pulley of a cranked shaft. However such devices very expensive.

To measure turns it is possible in more simple way on in advance known parity between speed of the car and number of turns of the engine on any transfer. For this purpose it is necessary to lift forward wheels, having blocked back and to tighten a manual brake. The speedometer error, especially on small speeds on which idling turns are measured, should not be considerable.

The third way consists in application of the stroboscope connected to system of ignition of the carburettor engine of other car. Put small to risk on a pulley of a cranked shaft of the diesel engine, start the carburettor engine and direct stroboscope light on this label. Turns of the carburettor engine should be thus known. If turns of the diesel engine and the carburettor engine coincide, or differ twice in the smaller or big party the shined label should remain motionless. Therefore at such measurements it is necessary to adhere to common sense.

In need of adjustment for simplification of access remove a nozzle of the air filter. Release a counternut of the adjusting screw and rotate the screw clockwise to increase turns, or counter-clockwise, to reduce. Upon termination of adjustment tighten a counternut, keeping the screw from проворачивания. Establish nozzles.

DIESEL ENGINES 16DA LATE RELEASE

ТНВД type Bosch VE

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The prevention

The manufacturer warns that if the restrictive screw of the pump is closed заглушкой adjustment in car-care centre of the dealer is forbidden. In this case adjustment ТНВД is carried out only by the representative of firm Bosch.

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Procedure of adjustment of turns of idling on diesel engines with such ТНВД differs from described above. The pump of this kind can be distinguished on the vertical screw in its forward part. On this pump it is forbidden to break adjustment of the restrictive screw of a control lever by turns of the diesel engine. The arrangement of screws is specified in drawing.

Arrangement of screws on ТНВД type Bosch VE (diesel engines 16DA late release and 17D)

1 – the screw of adjustment of turns of idling, 2 – the restrictive screw of a control lever turns of the diesel engine (not to touch), 3 – the screw of adjustment of limiting turns

PERFORMANCE ORDER

1. Measure idling turns. At adjustment it is recommended to apply the ways stated above. 2. In need of adjustment release a counternut of the adjusting screw, and rotating the screw, establish idling turns. Upon termination of adjustment tighten a counternut, keeping the screw from проворачивания.

ТНВД type Lucas/CAV

Arrangement of screws on ТНВД type Lucas/CAV (diesel engines 16DA late release and 17D)

1 – the restrictive screw of adjustment of turns of idling, 2 – plastic заглушка, 3 – the restrictive screw of a control lever turns of the diesel engine (not to touch),

4 – the screw of adjustment of limiting turns, 5 – a plate with instructions of the data on installation of the moment of injection of fuel

Idling turns on diesel engines with ТНВД of this kind are regulated by rotation of the restrictive screw 1. The screw of a control lever which is closed plastic заглушкой, is forbidden to touch.

Measure idling turns. At adjustment it is recommended to apply the ways stated above.

In need of adjustment release a counternut of the adjusting screw, and rotating the screw, establish idling turns. Upon termination of adjustment tighten a counternut, keeping the screw from проворачивания.

DIESEL ENGINES 17DR AND 17DTL

ТНВД type Bosch VE

Starting arrangement TNVD of type Bosch VE (diesel engines 17DR)

The starting arrangement is specified by an arrow.

Backlash between the lever of a drive and a blooming collar of a cable of a drive of the starting arrangement (ТНВД type Bosch VE, diesel engines 17DR)

Arrows specify a backlash on the cold engine.

1 – a collar, 2 – the drive lever

Adjusting screws of idling on ТНВД type Bosch VE (diesel engines 17DR)

1 – the adjusting screw of idling for the cold engine,

2 – the adjusting screw of idling for the heated-up engine

ТНВД type Bosch VE, established on these diesel engines, are equipped with the starting arrangement with a vacuum drive which provides increase of turns of idling at temperature more low 20 ° S.Poetomu idling turns are regulated twice, – on cold and on the heated-up engine.

PERFORMANCE ORDER

1. Measure idling turns. 2. On the cold engine (temperature more low 20 °) check up a backlash between the lever of a drive and a blooming collar of a cable of a drive of the starting arrangement which should be 2–3 mm. If necessary adjust, moving a cable cover in a collar (fig. the Backlash between the lever of a drive and a blooming collar of a cable of a drive of the starting arrangement (ТНВД type Bosch VE see, diesel engines 17DR)). 3. Start the engine and check up turns of idling which should correspond to specifications. In need of adjustment rotate the adjusting screw for the cold engine and establish idling turns (fig. Adjusting screws of idling on ТНВД type Bosch VE (diesel engines 17DR see)). 4. Warm up the engine, having made a trip. Be convinced that at temperature above 20 ° About a cable of a drive of the starting arrangement it is involved and turns the lever, resulting it in contact with the adjusting screw of idling for the heated-up engine. Thus the engine should work on the bottom limiting turns. If necessary adjust idling turns, rotating the adjusting screw for the heated-up engine.

ТНВД type Lucas/CAV

As well as ТНВД type Bosch VE, ТНВД type Lucas/CAV also it is equipped by the starting arrangement with a vacuum drive which provides increase of turns of idling at temperature more low 20 ° S.Poetomu, idling turns also are regulated twice, – on cold and on the heated-up engine.

PERFORMANCE ORDER

1. Measure idling turns. 2. Start the engine and check up idling turns on the cold engine which should correspond to specifications. In need of adjustment, release a counternut of a rod of a vacuum drive, and rotating a rod, establish idling turns. Upon termination of tighten a counternut. 3. Warm up the engine, having made a trip. Be convinced that at temperature above 20 ° About a cable of a drive of the starting arrangement it is involved and turns the lever, resulting it in contact with the adjusting screw of idling for the heated-up engine. Thus the engine should work on the bottom limiting turns specified in specifications. If necessary adjust, rotating the adjusting screw for the heated-up engine at the released counternut. Upon termination of tighten a counternut.