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




Dismantling of a head of cylinders

The new or restored heads of cylinders for the majority of types of engines can be got in dealer branches of firms of manufacturers of cars or in car-care centre workshops. In a kind of necessity of application of some special tools for dismantle and check of a condition of heads, and also because of inaccessibility of many replaceable components, for the mechanic-fan it can appear more reasonable and cheaper to get at once the restored head () than to waste time on dismantling, check of a condition and restoration old (ых).

Dismantling of a head of cylinders demands carrying out of removal of inlet and final valves with accompanying components. If yet have not done it, give nuts коромысел, then remove spherical support and коромысла from head hairpins. Carefully mark all components, or put them in accurately marked boxes - at assemblage all of them should be established on the former places.

 PERFORMANCE ORDER

  1. Valves put together with components accompanying them so that at assemblage they could be established on former places.
  1. For storage of valves and accompanying they a component can use a polyethylene package with the label attached to it is guarantees possibility of installation of components at assemblage in the directing plugs.
Inscription on a label - «Inlet, 3rd cylinder»
  1. By means of the special tool compress a spring of the first valve and remove crackers of the cutting lock (by means of nippers or a magnet). Cautiously release the tool and remove a spring plate, a spring and its saddle (if it is used).
  2. Take the valve from a head, then remove the directing plug маслоотражательный a cap. If the valve is got jammed in the directing plug (does not pass through it), push it back and remove agnails along the edges of a flute under crackers and a core end face with the help надфиля or a grinding stone.
  1. If the valve does not pass through directing plug, remove agnails from flute edges under crackers and an end face of a core by means of a thin file.
  1. Repeat procedure for the remained valves. Remember necessity to put components of each of valves separately.
  2. After removal and warehousing by correct image of components клапанного the mechanism the head can be carefully cleared and examined. If product of full major repairs of the engine is supposed, preliminary finish engine dismantling.