Jeep Grand Cherokee

1993-1999 of release

Repair and car operation



Jeep Grand Cherokee
+ Cars of mark Jeep Grand Cherokee
+ Options and routine maintenance
+ Рядный the six-cylinder engine
+ Engine V8
- Procedure of the general and engine major repairs
   The general information
   Engine major repairs - the general information
   Check компрессионного pressure in cylinders
   The diagnostic checks made by means of the vacuum gauge
   Methods of removal of the engine and necessary safety measures
   Removal and engine installation
   Variants 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
   Assemblage of a head of cylinders
   Removal of shatunno-piston assemblages
   Removal of a cranked shaft
   Cleaning of the block of the engine
   Check of a condition of the block of the engine
   Хонингование cylinders
   Check of a condition of shatunno-piston assemblages
   Check of a condition of a cranked shaft
   Check of a condition radical and шатунных bearings
   Assembly order of the engine after end of its major repairs
   Installation of a cranked shaft and check of backlashes of radical bearings
   Installation of piston rings
   Installation of shatunno-piston assemblages and check of backlashes in шатунных bearings
   The first start of the engine after major repairs
+ Systems of cooling, heating and air conditioning
+ The power supply system and release of the fulfilled gases
+ System of an electric equipment of the engine
+ Systems of decrease in toxicity of the fulfilled gases and engine management
+ Manual box of a gear change
+ Automatic transmission
+ Distributing box
+ Coupling and трансмиссионная a line
+ Brake system
+ Suspension bracket and steering
+ Body
+ System of an onboard electric equipment
+ Controls and operation receptions




Removal of a cranked shaft

Extraction of a cranked shaft can be made only after the engine will be removed from the car. It is supposed also that a flywheel/privodnoj a disk, демпфер крутильных fluctuations, the distributive chain, the pallet картера, the oil pump and shatunno-piston assemblages are already removed from the engine.


 PERFORMANCE ORDER

  1. Before starting extraction of a cranked shaft measure its size axial люфта. Fix циферблатный a measuring instrument плунжерного type on the block so that its rod has appeared located coaxially with shaft and only touched a cheek of one of cranks (or to an end face of a pin of a shaft).

Definition axial люфта a cranked shaft with the help циферблатного a measuring instrument плунжерного type.

  1. Take away a shaft against the stop back and null a measuring instrument. Then push a shaft against the stop forward and consider an instrument reading. The measured moving of a shaft corresponds to its size axial люфта. If люфт exceeds admissible value, check up persistent surfaces of a shaft on presence of signs of deterioration. If obvious signs of deterioration are not present, installation of new persistent bearings should help to correct a situation.
  2. At absence available циферблатного a measuring instrument it is possible to take advantage probeом лезвийного type. Cautiously take away a shaft in one of the parties against the stop. Fill probeами a backlash between shaft and a forward surface of the persistent radical bearing. The total thickness probeов will be equal to size axial люфта a shaft.

Measurement of size axial люфта a cranked shaft with the help probeа лезвийного type.

  1. Check up covers of radical bearings of a cranked shaft on presence of identification labels. Covers should be consistently numbered as their installation from a forward part of the engine to the back. If marks are absent, put it independently with the help кернера. Covers of radical bearings are often equipped by the arrow cast on their top part specifying a direction forward on the engine. Loosen the bolts of covers of radical bearings on 1/4 turns for one approach until there will be an untwisting possibility their hands. If hairpins are applied to fastening any of covers, remember their site that at assemblage to establish on former places.

Covers of radical bearings are usually numbered in front back on the engine (marksman) - on engines V8 in volume of number of 5.2 l are located on the passenger party of covers.

  1. Cautiously обстучите covers a hammer with soft brisk, then separate them from the block. In case of need take advantage of bolts as points of support for removal of covers by means of the lever. Try not to drop loose leaves if they act in film together with covers.
  2. Cautiously take a cranked shaft from the engine. It is reasonable to resort here to the help of the assistant - the shaft is heavy enough. Having left loose leaves on the places in the block and covers, establish covers of radical bearings on the former places and by hand tighten fixing bolts.