The device, service, repair of Mercedes-Benz C of Class (W-203 c 2000г) - Check and replacement of spark plugs. Check of a condition of high-voltage wires-//Mercedes Benz - mikbookmarket.ru

Mercedes C-Class

W203 since 2000 of release

Repair and car operation



Mercedes-Benz
+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
- Routine maintenance
   Specifications
   Indicator of term of approach of planned maintenance (ASSYST)
   Schedule of routine maintenance
   General information on control
   Check of levels of liquids, control of leaks
   Check of a condition of tires and pressure in them. Designation of tires and disks of wheels. Rotation and replacement of wheels
   Replacement of impellent oil and oil filter
   Checks of brake system. Adjustment of the parking brake
   Check of fuel system
   Check of a condition and replacement of hoses of an impellent compartment, localization of leaks
   Check of a condition of ridge belts of a streaming drive of auxiliary units
   Check of functioning of system of cooling and frost resistance of cooling liquid. Liquid replacement
   Check of a condition of system of production of the fulfilled gases
   Check of level of oil of automatic transmission
   Visual control of a box of gear shifting on leakages of oil
   Condition check suspension bracket and steering component
   Check of a condition of protective covers of power shafts
   Check of level of liquid of system of hydrostrengthening of a wheel
   Check of level of liquid of system of adjustment of a road clearance
   Check of central air of air
   Cleaning of the mechanism of the movable panel of the hatch of a roof
   Visual control of a seat belt and safety cushion block
   Check of operability of headlights and horn
   Condition check, adjustment and replacement of brushes of screen wipers
   Check of a condition of the battery, care of it and charging
   Replacement of the battery of system of an emergency call of Tele-Aid
   Replacement of an element of the filter of air of salon / coal filter of purification of air
   Check, cleaning and greasing of the coupling device
   Replacement of brake liquid
   Check of the elastic coupling of the driveshaft
   Check and replacement of spark plugs. Check of a condition of high-voltage wires
   Replacement of an element of the air filter of the engine
   Replacement of the fuel filter
+ Engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment







Check and replacement of spark plugs. Check of a condition of high-voltage wires

Address also to the Section Check and adjustment of a corner of an advancing of ignition.

 Attention! Spark plugs replace only on cold or slightly warm engine. If candles are turned out on the hot engine, the carving of a head of the cylinders executed from light metal can be damaged.


Before the beginning of work prepare all necessary tools. Some producers of spark plugs deliver special tools for measurement of a candle gap.

Engines 111, 271

· Candle key of 16 mm, for example, HAZET-2506 either-2776 (engines 111, 271) or HAZET-4766 (engine 112).
· It is in addition recommended to get special pincers, for example, HAZET 1849 which facilitate an otvorachivaniye of candles. MERCEDES-BENZ applies for this purpose an assembly key 3277А.
· Depending on number of cylinders of the engine necessary quantity of spark plugs. Applied spark plugs are listed in Specifications.

Turn out spark plugs

1 — the Candle key
2 — candle Mine
3 — the ignition Coil

 PERFORMANCE ORDER

1. The best way of replacement of spark plugs is preliminary purchase of new candles, adjustment of their gap and replacement of each candle in turn. Upon purchase of candles it is very important to choose those candles which are intended for the engine of your car. Information on them is provided in Specifications.
2. Having near at hand new candles, let's to the engine cool down completely before the beginning of removal of the old. During this time it is possible to examine new candles on existence in them of defects and to check candle gaps.

 Do not concern the parts being under a high voltage. The persons having a warm stimulator, should not carry out any works with electronic system of ignition.

3. Remove ignition coils, address to the Section Removal and installation of coils of ignition.


4. Turn out spark plugs by means of a candle key (1). Thus watch that the key stood directly and it was not warped.


Check

 PERFORMANCE ORDER

1. Compare the taken-out candle with shown in pictures in Head engine Electric equipment, it will give you useful information about the general condition of the engine.
2. Check shchupy interelectrode distance. Demanded value of a gap is given in Specifications.

At new candles the interelectrode distance is, as a rule, established correctly.

3. For distance installation between contacts turn in the corresponding electrode of weight. For this purpose knock sideways on it. At a podgibaniye обоприте a small screw-driver about carving edge. Do not lean at all on the central electrode as it can be damaged.
4. Put a little medsoderzhashchy anti-taking structure on a carving of a new candle. Establish a candle in a head of cylinders and screw it fingers against the stop, then tighten by means of a head of a candle key. If it is possible, use for a candle tightening a dinamometrichesky key to be sure that it is established correctly. The effort of a tightening of candles is included in Specifications.
Recommendations: In order to avoid possibility of a vvinchivaniye of a candle not on a carving put on its shaft a small piece of a rubber hose or a plastic tube. The flexible tube will work as universal - the kardanny hinge, providing candle alignment in relation to a candle nest and in case the candle starts to warp, the hose will slip on it, without giving possibility to strip a thread.
5. Before connection to a candle of high-voltage (VV) of a wire carefully examine it on damages, corrosion of internal contact and measure resistance. If it considerably exceeds 30 kiloohms/meters – replace all set of wires.
6. Connect a wire to the established new candle, again using a rotary motion and holding the socket while it will not be put on a candle up to the end.
7. Repeat the procedure described above for other spark plugs consistently to avoid the wrong connection of candle VV of wires.


Installation

 PERFORMANCE ORDER

1. Insert a candle and screw it against the stop in a head of cylinders. After that tighten a candle the moment specified in Specifications. Thus a candle key (1) hold directly (And), without warping it (In).

2. Establish to the place of the ignition coil, address to the Section Removal and installation of coils of ignition.


Repair of the damaged carving of spark plugs

 PERFORMANCE ORDER

If it becomes clear that the carving under a spark plug in a head of cylinders is damaged, it is necessary for repairing. For this purpose there is the corresponding tool and a repair kit, for example, BERU firms. The damaged carving is drilled by a special drill. For this purpose it is not obligatory to remove a head of cylinders. Then in a head the new carving and a candle is cut rolled in a special transitional carving insert. In addition established carving inserts of candles sit strongly and provide tightness.


Engine 112

Differences from 4-cylinder engines 111, 271 are described only.

Removal

Dual coils of ignition for two spark plugs and and b of one cylinder

1 — the Case of coils and and b 2 — Designation on a cover of valves

 PERFORMANCE ORDER

1. Disconnect a cover from an engine end face.
2. Remove the top part of the case of the air filter (only at engines with the air filter located sideways of the car).
3. Remove a measuring instrument of weight of air with a soaking-up branch pipe (only at engines with the air filter located sideways of the car).
4. Uncover the engine or the air filter, address to the Section Removal and installation of the air filter.
5. Disconnect coils of ignition (1).
6. Disunite the spark plug tip by means of a double wrench from spark plugs over a cover of a head of cylinders.
7. Turn out spark plugs.


Installation

 PERFORMANCE ORDER

1. Screw candles by hand against the stop in a head of cylinders and then tighten the moment 28Нм.

Each cylinder has on two candles. Not to mix tips, it is necessary to mark them just as a cover on the engine (2).

2. Connect tips to candles.
3. Establish coils of ignition and fix the moment 8Нм.
4. Establish a cover of the engine or the air filter, address to the Section Removal and installation of the air filter.
5. Establish a measuring instrument of weight of air with a branch pipe (only at engines with the air filter located sideways of the car).
6. Establish the top part of the case of the air filter (only at engines with the air filter located sideways of the car).
7. Fix a cover from an engine end face.