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

Check of a condition of a bent shaft


  1. Wash out a bent shaft in solvent and dry it compressed air (if there is an access to its source). Clean a special rigid brush (brush) all oil openings. Also wash out them a solvent stream.
  2. Check necks of radical and conrod bearings for existence of signs of uneven wear, cavities and cracks.
  3. Carry out with pressing several times on each of necks an edge of a copper coin. If on the surface of necks there are copper strips, then it is rough and the shaft has to be sent to a pro-point.
  4. Remove agnails from edges of oil openings of a bent shaft by means of a grinding stone, a file or development.
  5. Check all other surface of a shaft for existence of cracks and other damages. For identification of the hidden cracks the shaft has to be subjected to special check that is a prerogative of specialists of car service.
  6. By means of a micrometer measure diameters of radical and conrod 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 conicity of a neck.
  1. Measure diameter of each of necks of a bent shaft in several points for definition of degrees of ovality and conicity of a neck.
  1. If necks of a bent shaft are injured or conicity and ovality have limits, leaving for admissible on Specifications, the shaft has to be sent for a pro-point to a workshop of car service. After a pro-point inserts of bearings of the corresponding repair sizes have to be installed in the engine.
  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 lead (in case the appropriate measures on elimination of defects are not taken) to an exit of new epiploons out of operation in the near future after the beginning of operation of the restored engine. It is necessary to give a shaft to a workshop for repair by a napressovka on its pins of thin plugs. In case repair does not have to is obviously possible to be replaced a shaft.
  3. Check a condition of inserts of radical and conrod bearings (Section Check of a Condition of Radical and Conrod Bearings).