Jeep Grand Cherokee

1993-1999 of release

Repair and car operation



Jeep Grandee Cheroki
+ Jeep Grand Cherokee brand Cars
+ Settings and routine maintenance
- Ryadny six-cylinder engine
   General information
   The repair procedures, which performance it is possible without engine extraction from the car
   Reduction in the provision VMT of a step of compression of the piston of the first cylinder
   Removal and installation of a cover of a head of cylinders
   Removal, check of a condition and installation of yokes and bars of pushers
   Replacement of klapanny springs, their plates and maslootrazhatelny caps
   Removal and installation of the inlet pipeline / final collector
   Removal and installation of a head of cylinders
   Replacement of a forward epiploon of a cranked shaft
   Condition check, removal and installation of a cover of a distributive chain, chain and its asterisks
   Removal, check of a condition and installation of a camshaft, bearings and hydraulic pushers
   Removal and installation of the pallet of a case
   Removal, check of a condition and installation of the oil pump
   Removal and flywheel installation / driving disk
   Replacement of a back epiploon of the crankshaft
   Check of a condition and replacement of rubber pillows of support of the engine
+ V8 Engine
+ Procedures of the general and major maintenance of the engine
+ Systems of cooling, heating and air conditioning
+ the Power supply system and production of the fulfilled gases
+ System of electric equipment of the engine
+ Systems of decrease in toxicity of the fulfilled gases and engine management
+ Manual box of gear shifting
+ Automatic transmission
+ Transfer case
+ Coupling and transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ System of onboard electric equipment
+ Governing bodies and operation receptions



Reduction in the provision VMT of a step of compression of the piston of the first cylinder

The highest point of the piston stroke defined by rotation of a cranked shaft is called as the top dead point (VMT). Each piston reaches VMT twice - at the end of a step of compression and, again, at the end of a release step, however, it is accepted to mean by the provision VMT of VMT of a step of compression. The distributive labels put on a damper of krutilny fluctuations (see an illustration), the cranked shaft established on a forward pin correspond to VMT of a step of compression of the piston of the first cylinder.

Reduction of pistons in situation VMT is a fundamental step at performance of such procedures, as removal of yokes, adjustment of valves, replacement of a distributive chain and asterisks and distributor removal.

In situation VMT it is necessary to make a provorachivaniye of a cranked shaft for reduction of the piston of any of cylinders. For this purpose it is possible to use one of offered below methods. If to look at the engine in front, normal it is considered rotation of a cranked shaft clockwise.

Before starting performance of this procedure make sure that transmission is established in neutral situation and disconnect from the central plug of the distributor a coil wire for a temporary conclusion out of operation ignition systems.

  1. The method of a provorachivaniye of a cranked shaft by means of a big replaceable face head put on a bolt of a damper of the krutilny fluctuations, screwed in in an end face of a shaft and given to rotation by a collar is preferable.
  2. It is possible to use the remote switch of a starter that will allow to save time some. Connect switch wires to plugs S (Switch) and In starter (Battery). Most close having brought the piston to situation VMT by means of the switch, finish procedure by the way, offered in the previous point.
  3. If there is a possibility to resort to the help of the assistant, the starter can be turned by short inclusions from a driver's place. After piston approach to VMT, procedure comes to the end by means of a replaceable head (see point and)).

 PERFORMANCE ORDER

  1. Remember position of the plug of a wire of a spark plug of the first cylinder on a distributor cover in relation to its case. For a guarantee put with a felt-tip pen or chalk on the case of the distributor directly under this plug the corresponding label. Give fixing screws, uncover the distributor and take her aside.

Numbers of plugs are put on candle wires near the distributor where they and can be found if wires are established fabrichno. If numbers are absent, previously accurately mark wires.


  1. Having found on a distributor cover the plug of a spark plug of the first cylinder, put on the distributor case the corresponding label located directly under this plug.
  1. Uncover the distributor (see. Head of Control and routine maintenance).
  2. Turn a cranked shaft (see the item. "For piston reduction...") so that risk on its damper of krutilny fluctuations it was combined with a zero mark in a distributive scale of a cover of a chain. The index or a label of VMT and a damper are usually located in the lower part of a forward wall of the engine, near a pulley rotating a driving belt.
  1. Turn a cranked shaft so that risk on a damper of krutilny fluctuations (shooter) it appeared directly opposite to a zero mark of a scale in a cover of a distributive chain.
  1. Look at a distributor begunok - its nouse should appear is directed directly on put on the distributor case a label. If it not so, the piston of the first cylinder is in the provision VMT of a step of release.
  1. Uncover the distributor and make sure that a begunok will turn a nouse to a label on the case (shooter).
  1. For reduction of the piston of the first cylinder in the provision VMT of a step of compression turn a cranked shaft on one complete revolution (360 °) clockwise. Now the nouse a begunka should turn towards a label. When a begunok will turn towards an arrangement of the plug of a spark plug of the first cylinder on a distributor cover (a label on the case), and distributive labels are as appropriate combined, the piston of the first cylinder is in the provision VMT of a step of compression.
  2. After the piston of the first cylinder is given in VMT of a step of compression, the others can are transferred to the same situation by a way of a consecutive provorachivaniye of a cranked shaft on 180 ° and according to ignition order (see. Specifications).