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
+ V8 Engine
- Procedures of the general and major maintenance of the engine
   General information
   Major maintenance of the engine - the general information
   Check of kompressionny 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 engine installation
   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 shatunno-piston assemblies
   Removal of a cranked 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 shatunno-piston assemblies
   Check of a condition of a cranked shaft
   Check of a condition of radical and shatunny bearings
   Engine assembly order after completion of its major maintenance
   Installation of a cranked shaft and check of gaps of radical bearings
   Installation of piston rings
   Installation of shatunno-piston assemblies and check of gaps in shatunny bearings
   The first start of the engine after major maintenance
+ 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

Check of a condition of a cranked shaft

 PERFORMANCE ORDER

  1. Wash out a cranked shaft in solvent and dry it the compressed air (if there is an access to its source). Clean a special rigid brush (ershiky) all oil openings. Also wash out them a solvent stream.
  2. Check necks of radical and shatunny bearings on existence of signs of non-uniform wear, cavities and cracks.
  3. Carry out with pressing several times on each of necks an edge of a copper coin. If on a surface of necks there are copper strips, it is rough and the shaft should be given to a pro-point.
  4. Remove agnails from edges of oil openings of a cranked shaft by means of a grinding stone, a file or development.
  5. Check all other surface of a shaft on existence of cracks and other damages. For identification of the hidden cracks the shaft should be subjected to special check that is a prerogative of specialists of car-care center.
  6. By means of a micrometer measure diameters of radical and shatunny necks of a shaft and compare results to requirements of Specifications. Measurement of diameter of a neck in several points on perimeter of its forming surface will allow to reveal ovality of a neck. Measurement of diameter since the different ends of a neck closely to cheeks of cranks allows to define a neck konusnost.
  1. Measure diameter of each of necks of a cranked shaft in several points for definition of degrees of ovality and a neck konusnost.
  1. If necks of a cranked shaft are injured or have leaving for admissible according to Specifications limits a konusnost and ovality, the shaft should be given for a pro-point to a car-care center workshop. After a pro-point in the engine loose leaves of bearings of the corresponding repair sizes should be established.
  2. Check face necks (pins) of a shaft on which epiploons are put on existence of signs of wear and damages. If in necks there are flutes developed by epiploons or their surfaces have teases, agnails and scratches, it will bring (in case the appropriate measures on elimination of defects) to an exit of new epiploons out of operation in the near future after the beginning of operation of the restored engine will not be taken. It is necessary to give a shaft to a workshop for repair by a napressovka on its pins of thin plugs. In case repair is not obviously possible to be replaced a shaft.
  3. Check a condition of loose leaves of radical and shatunny bearings (The section Check of a condition of radical and shatunny bearings).