Toyota 4 Runner/Hilux/Surf

1987-1998 of release

Repair and car operation



Тойота 4Раннер
+ 1. The maintenance instruction
+ 2. Maintenance service
- 3. Engines
   + 3.1. 4-cylinder engines
   + 3.2. Engines V6 of 3,0 l (1993-1994) and 3,4 l (since 1995)
   - 3.3. Dismantle and engine major repairs
      3.3.1. Specifications
      + 3.3.2. Major repairs
      3.3.3. Diagnostics of the engine by means of the vacuum gauge
      3.3.4. Compression check in engine cylinders
      + 3.3.5. Dismantle of the power unit
      - 3.3.6. A head of cylinders
         3.3.6.1. Dismantling of a head of cylinders
         3.3.6.2. Clearing and check of a head of cylinders
         3.3.6.3. Assemblage
      3.3.7. Valves
      3.3.8. Shatunno-piston group
      + 3.3.9. Коленвал
      3.3.10. The block of cylinders
      3.3.11. Хоннингование cylinders
      + 3.3.12. Rods and pistons
      3.3.13. Radical and шатунные bearings
      3.3.14. Balansirnye shaft
      3.3.15. An assembly order
      3.3.16. Piston rings
      3.3.17. Start-up of the engine after repair and обкатка
+ 4. Systems of heating, ventilation
+ 5. Fuel and exhaust systems
+ 6. Transmissions
+ 7. Transmission elements
+ 8. Brake system
+ 9. A suspension bracket and a steering
+ 10. A body
+ 11. An electric equipment
+ 12. Electroschemes





3.3.6.2. Clearing and check of a head of cylinders
THE GENERAL DATA

Places of check of deterioration of the valve

1. An end face

2. Flutes under crackers

3. A core

4. A facet

5. The inlet valve

6. A corbel

7. The final valve

Characteristic deterioration of an end face of the valve

Clearing

PERFORMANCE ORDER
1. Remove from demountable surfaces of a head all rests of linings, being careful not to damage a surface. Remove a deposit from chambers of combustion, heads of valves and a scum from cooling channels. Banish and clean all carving apertures.
2. Wash out solvent all details клапанного the mechanism, being careful not to damage them.

Check

PERFORMANCE ORDER
Head
1. Attentively examine a head, check up presence of cracks and signs of penetration of a cooling liquid. At detection of cracks a head replace.
2. Check up deformation of a demountable surface of a head. If the deviation from a plane exceeds norm a head follows перешлифовать.
3. Check up a condition of saddles of valves. At presence питтинга (poles), cracks, burn-out traces head repair in car-care centre is required.
4. Check up люфт the valve in a cross-section direction (marksman). If half total люфта on the indicator exceeds norm it is necessary to replace the plug (it is carried out in car-care centre).
Valves
5. Attentively examine valves (cм. Fig. of the Place of check of deterioration of the valve), check up presence on facets of valves of cracks, traces of non-uniform development, ablation of metal and прогара. Check up presence of cracks on necks and cores, and also a bend of cores, turning the valve in the directing plug.
6. Check up deterioration of end faces of cores (fig. Characteristic deterioration of an end face of the valve see). Presence of any of the specified defects specifies in necessity of repair of valves.
7. Measure width of a regional corbel (1) each valves and compare to standard value. If this distance is less than norm the valve replace.
Details клапанного the mechanism
8. Measure length of a spring in a free condition. Springs with усадкой replace. Before installation of springs on the repaired engine it is necessary to check up them under loading at the special stand in car-care centre.
9. Check up vertical position of springs. At detection of a deviation of a spring from a vertical it is necessary to replace a spring.
10. Check up presence of visible wear tracks and cracks on plates of springs and crackers. Details with any defects replace.
11. If at check it will be found out that deterioration of details does not exceed norm collect a head of cylinders, having established details on former places. To carry out repair of a head of cylinders of any complexity follows in car-care centre.

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