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
+ 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
   The general information
   System of multiitem injection of fuel (MPFI) and information gauges - the description
   Removal and installation of the electronic module of management (РСМ)
   The description of a principle of action of system of self-diagnostics and procedure of reading of codes of malfunctions
   Information gauges
   System of operated ventilation картера (PCV)
   System recycling the fulfilled gases (EGR)
   System of catching of steams of fuel (EVAP)
   The Katalitichesky converter
+ 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




System of operated ventilation картера (PCV)

Models with engines in volume of 4.0 l are equipped by system of continuous (uncontrollable) ventilation картера (CCV). The given system functions in the same way as well as usual operated (PCV), however the management valve is not included in its structure. Instead the formed vacuum tube is connected to depression of the inlet pipeline on a cover of a head of cylinders in turned to salon of the car of the party of the engine.

In a tube the calibrated jet of the fixed size is built in. The jet serves for definition of quantity deduced of the engine картерных gases. The hose of giving of fresh air from an air cleaner is connected to a forward part of a head of cylinders on a cover of a head of cylinders. At work of the engine air is forced in the engine where mixes up with картерными evaporations. At the expense of depression of the inlet pipeline the mix of air and картерных evaporations is pumped over through the calibrated jet and deduced in the pipeline, whence gets to combustion chambers where it is destroyed.

The system of operated ventilation картера (PCV) allows to lower issue in atmosphere of hydrocarbonic connections at the expense of destruction картерных evaporations. It is made by realisation of circulation of fresh air from an air cleaner through картер the engine where it (air) mixes up with картерными gases and through the management valve (PCV) is deduced in the inlet pipeline.

System PCV of engines of 4.0 l

1 — the Coal adsorber
2 — the Air cleaner
3 — the Vacuum union
4 — the Regulator of pressure of fuel
5 — fuel Injectors
6 — the Calibrated jet
7 — Gauge MAR
8 — the Fuel highway
9 — the Inlet pipeline
10 — TPS
11 — pipeline Unions
12 — the Motor of system of stabilisation of turns of idling (the valve of additional air) (IAC)
13 — the Hose of giving of pure air
14 — Assemblage of a vacuum tube
15 — the Gauge of temperature of air

System PCV of the engine of 5.2 l.

Valve PCV of engines of 5.2 l.

The basic components of system PCV are the valve managements (valve PCV), the filter картерных gases and the vacuum hoses serving for connection of given components with the engine.

For maintenance of quality of turns of idling valve PCV locks a conclusion of gases from картера at deep depression in the pipeline. At occurrence of infringements in engine functioning (for example occurrence of problems with piston rings) a system design allows to carry out the conclusion картерных gases on a ventilating tube in an air cleaner, whence a mix gets to chambers of combustion and is destroyed in the course of normal work of the engine.

The description of procedures of check and valve PCV replacement is resulted in the Head of Adjustment and routine maintenance.