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


Assemblage of a head of cylinders

Irrespective of, whether the head went to a workshop for carrying out клапанных works or not, before assemblage it is necessary to make sure of its absolute cleanliness.


    If service of valves in a workshop was made, all components will be already established on the places. In this case begin assemblage with performance of procedure of item 8. Establish on directing plugs of each of inlet valves new маслоотражательный a cap. Cautiously pull each of caps on the plug before its full landing. Do not suppose перекручивания and a reversing of caps in the course of installation as in this case they will not provide due consolidation on cores of valves. Caps can be established on plugs by means of a deep replaceable head and small киянки, however do not overdo. Caps of umbellate type simply stretch on plugs of final valves.

Pay attention to that caps of inlet valves differ from final - do not mix them.

    On inlet valves for landing маслоотражательных caps on a ledge of a head of cylinders take advantage of a deep replaceable head a small hammer - umbellate type caps of final valves simply stretch on ledges.

1 — Maslootrazhatelnyj a cap of the final valve
2 — Maslootrazhatelnyj a cap of the inlet valve

    Since one of the head ends, grease and establish the first valve. The valve core should be greased молибденсодержащей by greasing or pure impellent oil. Establish on the places клапанные springs and their plates. Compress a spring the special tool. Establish in a flute on a core of the valve crackers of the cutting lock, then slowly release the tool and make sure of correctness of landing of crackers. For fixing of crackers in a flute till the moment отпускания the tool put on their inside a little dense greasing Repeat procedure for the remained valves. Watch that all components were established on the former places! Check up adjusting length клапанных springs by means of a ruler or колумбуса. If the head was sent for restoration and service of valves in a workshop, the adjusting length of springs should be already modified (however it is not necessary to take it on trust). Measurement is made from a saddle top / an adjusting washer (washers) of each spring to the bottom surface of a plate of a spring. If the height exceeds admissible value under Specifications, for its updating under a spring the superfluous adjusting washer () can be added.

Product of updating by a way подкладывания washers of insufficient height of a spring is not admissible at all!

    Make sure of conformity to requirements of Specifications of adjusting height клапанных springs (distance from the top point of a saddle of a spring / an adjusting washer to a top of a cup of a spring or the bottom part of its plate).
    Grease working basic surfaces коромысел молибденсодержащей with greasing, then establish on the former places in a head коромысла and their spherical support.