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

e65f60b7 Головки вытяжные дефлекторные смотрите на сайте.


Procedure of the general and engine major repairs

Specifications

Рядный the 6-cylinder engine in volume of 4.0 l

The general parametres

Working volume
4.0 l (4228 sm3)
Kompressionnoe pressure in cylinders (кГс/см2)
8,4 — 10,5
The maximum admissible distinction in компрессионном pressure between cylinders (кГс/см2)
2,1
Pressure of oil (кГс/см2)
  • On idling turns (600 rpm)
0,9
  • At frequency of rotation of the engine of 1600 rpm
2,6 — 5,3

The engine block

Diameter of cylinders (mm)
98,43 — 98,48
Admissible конусность and ovality (mm)
0,03
Maximum admissible неплоскостность interfaced to a head of cylinders of a surface
0,05 mm on 152,4 mm of length
Diameter of nests of pushers (mm)
23,000 — 23,025

Head of cylinders and valves

Maximum admissible неплоскостность heads
0,05 mm on 152.4 mm of length
The minimum width of a cylindrical site (corbel) of plates of valves (mm)
0,79
Corner of a saddle of valves (inlet and final)
44,5 °
Corner of a working facet of plates of valves (inlet and final)
45 °
Diameter of cores of valves (mm)
7,90 — 7,92
Backlash between a core of the valve and walls of the directing plug (mm)
0,025 — 0,076
Free length клапанной springs (mm)
49,96
Adjusting height клапанной springs (mm)
41,7
Length of the valve (mm)
  • The inlet
122,48 — 122,86
  • The final
122,86 — 123,24

Cranked shaft and rods

Diameter шатунных necks (mm)
53,172 — 53,226
Backlash in шатунных bearings (mm)
  • The nominal
0,038 — 0,051
  • The admissible
0,025 — 0,076
Lateral backlash (axial люфт) rods (mm)
0,25 — 0,48
Diameter of radical necks (mm)
63,490 — 63,503
Backlash in radical bearings (mm)
  • The nominal
0,05
  • The admissible
0,025 — 0,064
Axial люфт a cranked shaft (on the persistent bearing) (mm)
0,038 — 0,165
Maximum admissible конусность and ovality (for all necks) (mm)
0,013

Pistons and piston rings

Backlash between the piston and walls of the cylinder (mm)
  • The nominal
0,033 — 0,038
  • The admissible
0,033 — 0,038
Backlash in locks of piston rings (mm)
  • Kompressionnye rings
0,25 — 0,51
  • Maslosemnoe ring (steel sections)
0,25 — 0,64
Lateral backlash of piston rings (mm)
  • Kompressionnye rings
    • The nominal
0,043
    • The admissible
0,043 — 0,081
  • Maslosemnoe ring
    • The nominal
0,076
    • The admissible
0,025 — 0,241

Efforts of a tightening of carving connections, Н•м*

Bolts of covers of radical bearings

108

Nuts of covers of the bottom heads of rods (шатунных bearings)

45

*Подробнее Specifications to Head Rjadnyj the six-cylinder engine see.

Engine V8 in volume of 5.2 l

The general parametres

Working volume
5.2 l (5211 sm3)
Kompressionnoe pressure in cylinders (кГс/см2)
8,4 — 10,5
The maximum admissible distinction in компрессионном pressure between cylinders (кГс/см2)
2,1
Pressure of oil (кГс/см2)
On idling turns (600 rpm)
0,7
At frequency of rotation of the engine of 3000 rpm
2,1 — 5,6

The engine block

Diameter of cylinders (mm)
99,31 — 99,42
Admissible конусность (mm)
0,25
Admissible ovality (mm)
0,13
Maximum admissible неплоскостность interfaced to a head of cylinders of a surface
0,05 mm on 152,4 mm of length
Diameter of nests of pushers (mm)
22,990 — 23,010

Head of cylinders and valves

Maximum admissible неплоскостность heads
0,05 mm on 152.4 mm of length
The minimum width of a cylindrical site (corbel) of plates of valves (mm)
1,19
Corner of a saddle of valves (inlet and final)
44,25 — 44,75 °
Corner of a working facet of plates of valves (inlet and final)
43,25 — 43,75 °
Diameter of cores of valves (mm)
7,90 — 7,92
Backlash between a core of the valve and walls of the directing plug (mm)
0,025 — 0,076
Free length клапанной springs (mm)
49,96
Adjusting height клапанной springs (mm)
41,7
Length of the valve (mm)
  • The inlet
124,28 — 124,92
  • The final
124,64 — 125,27

Cranked shaft and rods

Diameter шатунных necks (mm)
53,95 — 53,98
Backlash in шатунных bearings (mm)
  • The nominal
0,01 — 0,06
  • The admissible
0,008
Lateral backlash (axial люфт) rods (mm)
0,15 — 0,36
Diameter of radical necks (mm)
63,487 — 63,513
Backlash in radical bearings (mm)
  • № 1
0,01 — 0,04
  • №№ 2, 3, 4 and 5
    • The nominal
0,01 — 0,05
    • The admissible
0,06 mm
Axial люфт a cranked shaft (mm)
0,05 — 0,18
Maximum admissible конусность and ovality (for all necks) (mm)
0,025

Pistons and piston rings

Backlash between the piston and walls of the cylinder (mm)
0,013 — 0,038
Backlash in locks of piston rings (mm)
  • Kompressionnye rings
0,25 — 0,51
  • Maslosemnoe ring (steel sections)
0,25 — 1,27
Lateral backlash of piston rings (mm)
  • Kompressionnye rings
0,038 — 0,076
  • Maslosemnoe ring
0,05 — 0,20

Efforts of a tightening of carving connections *, Н•м

Bolts of covers of radical bearings

115

Nuts of covers of the bottom heads of rods (шатунных bearings)

61

*Подробнее Specifications to the Head Engine V8 see.