Jeep Grand Cherokee

1993-1999 of release

Repair and operation of the car



Jeep Grand Cherokee
+ Cars of the Jeep Grand Cherokee brand
+ Settings and routine maintenance
+ Line six-cylinder engine
+ V8 engine
- Procedures of the general and capital repairs of the engine
   General information
   Capital repairs of the engine - the general information
   Check of compression pressure in cylinders
   The diagnostic checks made by means of the vacuum gage
   Methods of removal of the engine and necessary precautionary measures
   Removal and installation of the engine
   Options of restoration of the engine
   Order of dismantling of the engine
   Dismantling of a head of cylinders
   Cleaning and check of a condition of a head of cylinders
   Service of valves
   Assembly of a head of cylinders
   Removal of conrod and piston assemblies
   Removal of a bent shaft
   Cleaning of the block of the engine
   Check of a condition of the block of the engine
   Honingovaniye of cylinders
   Check of a condition of conrod and piston assemblies
   Check of a condition of a bent shaft
   Check of a condition of radical and conrod bearings
   Engine assembly order after completion of its capital repairs
   Installation of a bent shaft and check of gaps of radical bearings
   Installation of piston rings
   Installation of conrod and piston assemblies and check of gaps in conrod bearings
   The first start of the engine after capital repairs
+ Cooling systems, heating and air conditioning
+ A 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 methods of operation



Removal and installation of the engine

The air conditioning system constantly is under pressure! Before disuniting refrigerator lines or to remove any components of system, make its discharge at car repair shop of dealer office or in a specialized workshop.

Removal

 PERFORMANCE ORDER

  1. Dump pressure in a power supply system (The head of the Power supply system and production of the fulfilled gases), then disconnect a negative wire from the battery.

These models of cars are equipped with safety cushions. The pillow constantly is in readiness and can work (to be inflated) at any time at the connected battery. In order to avoid casual operation of system (and receiving as a result of a trauma) every time during the work with safety cushion components (including blow sensors which can be located near a forward lattice / bumper) disconnect a negative wire from the battery. After shutdown of the battery before getting to work it is necessary to wait not less than 2 minutes (the system is equipped with the delay condenser which has to be discharged completely). For more details see the Head Sistem of onboard electric equipment.

  1. Cover wings of the car and a forward fairing and remove a cowl (Head Kuzov). For protection of wings specially formed covers are issued, however also old blankets will approach not worse.
  2. Remove assembly of the air cleaner (The head of the Power supply system and production of the fulfilled gases).
  3. Empty the cooling system (The head Nastroyki and routine maintenance).
  4. Mark vacuum lines, hoses of systems of decrease in toxicity of the fulfilled gases, electric sockets, tires of grounding and fuel lines (for the purpose of a guarantee of their correct connection at assembly) and disconnect them. Just in case make also the scheme of laying of lines, hoses and wires in a motive compartment.
  5. Mark and disconnect cooling system hoses from the engine.
  6. Remove the cooling system fan with a casing and a radiator (The head of the Cooling system, heating and air conditioning).
  7. Take off a driving belt (i) (The head Nastroyki and routine maintenance).

Gasoline is in the highest measure flammable liquid therefore during the work with components of a power supply system of the car it is necessary to observe some special precautionary measures. Work should be performed in well ventilated room in which there should not be heating devices using natural gas and equipped with a control torch (such as vodogre and dryers for clothes and footwear) approach to the venue of works with the lit cigarette, naked flame or the carrying unprotected by the lamp shade is inadmissible. In view of aggression of gasoline, there where there is a danger of its spillage in the course of implementation of any procedure, put on protective latex gloves. Immediately wash away the gasoline which got on open parts of the body a plentiful amount of water with soap. Near at hand always there has to be a class B fire extinguisher. Disconnect fuel lines, the going car chassis (The head of the Power supply system and production of the fulfilled gases) from the engine. Zakuporte open ends of lines and connecting unions.

  1. Disconnect draft of gas (and also draft of the drive of a butterfly valve in the mode kik-Down (TV draft) and a cable of the drive of a tempostat if those are provided) from the engine (The head of the Power supply system and production of the fulfilled gases).
  2. On the cars equipped with system of hydrostrengthening of a wheel you otboltit the pump of the hydraulic booster (The head Podvesk and steering). Put the pump aside, without disconnecting from it lines/hoses and so that hydraulic liquid did not follow from it (a bottom down). Tie up the pump a wire.
  1. Tie up the pump of system of hydrostrengthening of a wheel with the lines connected to it aside - track that the pump was located a bottom down.
  1. On the models equipped with the conditioner of air you otboltit the compressor (The head of the Cooling system, heating and air conditioning) and also shift it aside. Do not disconnect hoses from the compressor.
  1. Otboltite the air conditioner compressor also put it aside (without disconnecting hoses).
  1. Merge motive oil (The head Nastroyki and routine maintenance) and remove an oil filter.
  2. Remove a starter (The head Sistema of electric equipment of the engine).
  3. Remove the generator (The head Sistema of electric equipment of the engine).
  4. Otboltite from the engine a reception pipe(s) of system of production of the fulfilled gases (The head of the Power supply system and production of the fulfilled gases).
  5. If works are performed on the model equipped with AT give rotation converter fixture to a driving disk (The head Automatic transmission).
  6. Prop up transmission a jack. Between a head of a jack and a case of transmission for distribution of loading lay wooden whetstone. The special transmission jacks equipped with safety chains are issued - whenever possible use one of such.
  7. Connect a lifting rigging (slings or chains) to engine eyes.
  8. Bring the winch of a telfer to a working point and connect a rigging to its hook. Choose a weak point of a sling (chain), however do not lift the engine so far.

Do not stand and do not perform any works under the engine, hung out only by means of the winch or other lifting equipment.


  1. Connect the lifting rigging fixed on the engine to a hook of the winch and choose a weak point.
  1. Give bolts of fastening of transmission to the engine.
  2. Give bolts of fastening of support of the engine to a frame.
  3. Once again make sure that the engine is completely disconnected from transmission and a frame of the car. Disconnect everything that was forgotten.
  4. Slightly raise the engine. Carefully advance it, disconnecting from transmission. If works are performed on the car equipped with AT take measures that the converter of rotation did not drop out of transmission (fix couple of manual vice on case aperture walls). On models with RKPP the main shaft has to leave coupling completely. Then slowly lift the engine and take it from a motive compartment.
  5. Remove a flywheel / a driving disk and install the engine on the assembly stand.

Installation

 PERFORMANCE ORDER

  1. Check a condition of support of the power unit. If rubber pillows are worn-out or damaged, replace them.
  2. On models with RKPP install a coupling basket (The head the Manual box of gear shifting). Now it will be a high time to replace the conducted disk.
  3. Carefully lower the engine in a motive compartment - track correctness of combination of components of support.
  4. On cars with AT make a joint of the converter of rotation and a bent shaft (The head Automatic transmission).
  5. At RKPP slightly grease a pin of a main shaft with high-temperature lubricant and enter it into the directing bearing of a bent shaft so that the dome of a case appeared aflush with the engine block.
  6. Establish bolts of fastening of the engine to transmission and strongly tighten them.

Do not try to use fixing bolts for pressing of the engine to transmission AT ALL.

  1. You make installation of the remained components as it should be, the return to an order of their removal.
  2. As necessary fill in a cooler, motive oil, liquid of system of hydrostrengthening of a wheel and transmission liquid.
  3. Start the engine and check it for leaks and serviceability of functioning of all units and accessories, then establish a cowl and carry out trial runs.
  4. Make a recharge and check on leakages of the air conditioning system.