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
   The general information
   The repair procedures, which performance does not demand extraction of the engine from the car
   Reduction in position ВМТ of the piston of the first cylinder
   Removal and installation of covers of heads of cylinders
   Removal, check of a condition and installation коромысел and bars of pushers
   Replacement клапанных springs, their plates and маслоотражательных caps
   Removal and installation of the inlet pipeline
   Removal and installation of final collectors
   Removal and installation of heads of cylinders
   Replacement of a forward epiploon of a cranked shaft
   Removal, check of a condition and installation of a cover of the distributive chain, the chain and its asterisks
   Removal, check of a condition and installation of a camshaft and hydraulic pushers
   Removal and pallet installation картера
   Removal, check of a condition and installation of the oil pump
   Removal and installation of a flywheel/privodnogo of a disk
   Replacement of a back radical epiploon
   Check of a condition and replacement of rubber pillows of support of the engine
+ 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
+ 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

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Removal and installation of heads of cylinders

Removal

 PERFORMANCE ORDER

  1. Disconnect a negative wire from the battery.
  2. Empty cooling system (the Head of Adjustment and routine maintenance).
  3. Remove covers of heads of cylinders (Has undressed Removal and installation of covers of heads of cylinders). Remove the inlet pipeline (Has undressed Removal and installation of the inlet pipeline).
  4. Disconnect from heads both final collectors (Has undressed Removal and installation of final collectors).
  5. Remove assemblages коромысел and bars of pushers (Has undressed Removal, check of a condition and installation коромысел and bars of pushers).

Put all components in the organised order guaranteeing their installation at assemblage on the former places.

  1. Operating in an order, return offered on an illustration 9.16, ослабьте bolts of heads, giving them on 1/4 turns for each approach by means of a collar until there will be a possibility вывинчивания them manually. For fastening of heads two types of the bolts differing on length are used - shorter are established outside.
  2. Remove heads from the engine. If the head does not separate from the block, do not try to hook its lever as it is fraught with damage of interfaced surfaces. Instead put to a head end face wooden брусок and knock on it with a hammer. As a last resort the head can be hooked for a moulding ledge. Lay the removed heads on wooden blocks so that possibility of damage of their interfaced surfaces was excluded.
  3. The description of procedures of dismantling and check of a condition of heads is offered in the Head of Procedure of the general and engine major repairs.

Installation

 PERFORMANCE ORDER

  1. Before installation it is necessary to smooth out carefully interfaced surfaces of heads and the block. Special solvents are issued - ask in shops of automobile accessories.
  2. With the help прокладочного a scraper remove from interfaced surfaces all traces of a deposit and a material of an old lining, then wipe surfaces the rags moistened in acetone. If at installation to leave on interfaced surfaces oil traces, it will lead to occurrence in the near future of leaks. At performance on the block of any works cover a cavity where pushers by rags in order to avoid hit in the engine of sawdust, dust and other extraneous subjects are established. For removal of small dust from cylinders take advantage of a vacuum cleaner.
  3. Check up interfaced surfaces of the block and heads on presence задиров, agnails, scratches and other damages. Insignificant defects can be eliminated by processing of a surface by an emery paper. At larger damages it is necessary to give to resort to machining (фрезеровке) surfaces.
  4. Banish carving apertures in the block a tap of the demanded size. Serially clamping each of bolts a head in a vice, pass their carvings леркой, having removed traces of corrosion and having restored the damaged coils of a carving. Left in a carving the dirt, corrosion and hermetic traces and defects of coils will affect reliability of definition of effort of a tightening of fixture.
  5. Establish new linings on directing pins on the block.
  1. Establish a new lining of a head on each of банок the block of cylinders, having put on it directing pins.
  1. Cautiously establish heads on the engine, trying not to shift thus a lining.
  2. Before installation of bolts of heads grease their carving with not stiffening hermetic of type Permatex № 2 or its equivalent.
  3. Establish bolts on the former places and tighten them, at first by hand. Operating in an order recommended on an accompanying illustration, tighten bolts in some stages with demanded effort.

Order of a tightening of bolts of a head of cylinders.

  1. The further installation make in an order, the return to a removal order. As Removal, check of a condition and installation коромысел was already mentioned in Section and bars of pushers, after a tightening коромысел before the first start of the engine allow to hydraulic pushers to "settle" within not less than 5 minutes.
  2. Fill in a cooler and replace impellent oil and the oil filter (the Head of Adjustment and routine maintenance). Start the engine and check up it on serviceability of functioning and presence of signs of leaks of a cooler and oil.

Do not lift speed of rotation of the engine above turns of fast idling until hydraulic pushers will not be filled with oil and again will not start to work silently.