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 of a bent shaft

Extraction of a bent shaft can be made only after the engine is removed from the car. It is supposed also that a flywheel / a driving disk, the damper of tortional fluctuations, a distributive chain, the case pallet, the oil pump and conrod and piston assemblies are already removed from the engine.


 PERFORMANCE ORDER

  1. Before starting extraction of a bent shaft measure the size of its axial side play. Fix the dial measuring instrument of plunger type on the block so that its rod was located coaxially with shaft and only touched a cheek of one of cranks (or to a shaft pin end face).

Definition of an axial side play of a bent shaft by means of the dial measuring instrument of plunger type.

  1. Take away a shaft against the stop back and nullify the measuring instrument. Then push a shaft against the stop forward and consider instrument reading. The measured movement of a shaft corresponds to the size of its axial side play. If the side play exceeds admissible value, check persistent surfaces of a shaft for existence of signs of wear. If there are no obvious signs of wear, installation of new persistent bearings has to help to correct a situation.
  2. In the absence of available dial measuring instrument it is possible to use the probe of lezviyny type. Carefully take a shaft to one of the parties against the stop. Fill with probes a gap between shaft and the forward surface of the persistent radical bearing. Total thickness of probes will be equal to the size of an axial side play of a shaft.

Measurement of size of an axial side play of a bent shaft by means of the probe of lezviyny type.

  1. Check covers of radical bearings of a bent shaft for existence of identification tags. Covers have to be consistently numbered as their installation from a forward part of the engine to back. If marking is absent, put it independently by means of a center punch. Covers of radical bearings are often equipped with the arrow cast on their top part specifying the direction forward on the engine. Weaken bolts of covers of radical bearings on 1/4 turns for one approach until the possibility of untwisting by their hands appears. If hairpins are applied to fastening any of covers, remember their location that at assembly to establish on former places.

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

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