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




Removal, check of a condition and installation of a cover of the distributive chain, the chain and its asterisks

Definition of a weak point of a distributive chain (a cover - on the engine)

Performance of the given procedure will allow you to estimate size of a weak point of a distributive chain without removal from the engine of its cover.


 PERFORMANCE ORDER

  1. Disconnect a negative wire from the battery.
  2. Result the piston of the first cylinder of the engine in position ВМТ (Has undressed Reduction in position ВМТ of the piston of the first cylinder).
  3. Keeping the piston on a compression step, establish it in position approximately 30 before ВМТ.
  4. Uncover the distributor (the Head of Adjustment and routine maintenance).
  5. For maintenance of desirable accuracy of check to turn a cranked shaft follows manually, very slowly by means of a semiinch drive with a collar, connected to the replaceable face head of the demanded big diameter which has been put on the big bolt in the centre of a pulley of a shaft.
  6. Slowly turn a cranked shaft clockwise until the piston of the first cylinder will not move to position ВМТ. Thus the left part of a distributive chain should sag. Do not turn a shaft further, but also do not return it back.
  7. Mark on the distributor case its position бегунка.
  8. Slowly turn a shaft counter-clockwise before movement occurrence бегунка the distributor. Stop and by position of labels of an advancing of ignition (distributive) check up as far cranked shaft has left from position ВМТ of the piston of the first cylinder.
  9. If the label has moved more than on 10 , the distributive chain is worn out excessively. For more exact check uncover chains.

Removal of a cover of a distributive chain

 PERFORMANCE ORDER

  1. Disconnect auxiliary units (such as the pump of system of hydrostrengthening of a wheel, the generator and the compressor of the conditioner of air), limiting access to a cover of a distributive chain. Leave hoses connected to the compressor of the conditioner and the pump of the hydraulic booster and fix units aside (Has undressed Removal and installation of the inlet pipeline).
  2. Remove an arm of hinged units from a forward wall of the engine.
  1. Remove hinged units, then an arm of the generator/compressor of the conditioner of air.
  1. Remove the water pump (the Head of System of cooling, heating and an air conditioning).
  2. Give two forward bolts of the pallet картера, screwed in in a chain cover - to reach bolts most easier from under the car.

In spite of the fact that the given procedure can be executed without pallet removal картера, most likely during removal to a cover the integral lining of the pallet reinforced by metal will be damaged. If it does not occur, the lining can be used and further after greasing of its lobby contacting to a cover of a chain of a part by hermetic, however is unique a reliable guarantee of prevention of occurrence of leaks in the future replacement of a lining of the pallet (Has undressed Removal and pallet installation картера) is.

  1. Give the remained fixing bolts and separate a cover of a distributive chain from the block and the pallet картера. The cover can appear "become attached" to the block. In this case follows with the help шпаклевочного a knife to destroy a hermetic layer between interfaced surfaces. Do not try to separate AT ALL a cover by means of the lever - it easily to damage!

Sites of bolts of fastening of a cover of a distributive chain.

  1. Remove from a pin of a cranked shaft an oil separator (if that is provided). Remember how the oil separator has been established on a shaft - at assemblage its position should not be changed. It makes sense at the given stage to replace a forward epiploon of a cranked shaft (Section Replacement of a forward epiploon of a cranked shaft).

Check of a condition of a distributive chain and gear wheel (the cover is removed from the engine)

 PERFORMANCE ORDER

  1. Put on a bolt of an asterisk of a camshaft a replaceable face head in structure динамометрического a key and put to a shaft a twisting moment in a direction of normal rotation (if heads of cylinders with коромыслами are left on the engine, the moment should make 41 Н•м if are removed - 20 Н•м). Do not suppose проворачивания a shaft! By means of a ruler fix position стыковочного a finger of a link of a chain on an asterisk and replace a twisting moment direction. Define displacement size on a ruler and estimate the general moving of a chain. If displacement makes more than 3 mm, it is necessary to replace a chain.

Chain replacement means replacement of all complete set of a drive газораспределительного the mechanism (a chain, an asterisk of a camshaft and an asterisk of a cranked shaft).


  1. Put a ruler to a chain for measurement of a weak point arising in it at twisting moment applying to a bolt of an asterisk of a camshaft.
  1. Check of an asterisk of knee and distributive shaft on presence of damages and deterioration signs.

Chain removal

 PERFORMANCE ORDER

  1. Make sure of combination of distributive labels and give a bolt of an asterisk of a camshaft.
  1. Combine distributive labels of asterisks of distributive and cranked shaft.
  1. Remove asterisks of distributive and knee shaft can be made with the help трехзахватного a stripper or two screw-drivers, but it is necessary to be careful not to damage a carving in an aperture in an end face of a cranked shaft.
  1. Asterisks of distributive and cranked shaft can be removed by means of three- or двухзахватного a stripper...

... Or two screw-drivers

Installation

 PERFORMANCE ORDER

  1. With the help прокладочного a scraper remove from interfaced surfaces of a cover and the block all traces of a material of an old lining and hermetic. Stop up the formed aperture in a forward part of the pallet картера with rags in order to avoid hit in the engine of extraneous subjects and dust. Take out from a forward part of the pallet картера semicircular rubber consolidation. Wipe interfaced surfaces of a cover the rags moistened in acetone.
  2. At installation of a new asterisk of a cranked shaft take care of its combination шпоночного a groove with шпонкой in a shaft pin.

Replacement of a distributive chain is made in the complete set with asterisks. Installation of a new chain on old asterisks is inadmissible. Having combined шпоночный a groove with шпонкой, put on an asterisk a shaft pin, запрессовав it into place by means of a bolt демпфера крутильных fluctuations with the big washer put on it. For bolt rotation take advantage of a replaceable head with a drive. It is alternatively possible to begin to knock accurately an asterisk on a pin a hammer.


In case of occurrence of resistance landing of an asterisk to a shaft should not apply force is though can lead to asterisk putting on, however it is fraught with imperceptible damage of components which in the future is capable to develop, having caused serious breakage of the engine.

  1. Put on a new chain a camshaft asterisk, then turn an asterisk a distributive label downwards. Put on a chain an asterisk of a cranked shaft and establish a camshaft asterisk on its pin. In case of need turn a camshaft so that it шпонка by correct image it was combined with a groove under it in an asterisk turned by a distributive label at 6 o'clock. After installation of a chain of a label of asterisks SHOULD be combined as is shown in an illustration.

At combination of distributive labels of asterisks in position ВМТ there is a piston of the sixth cylinder.


  1. Establish an asterisk of a camshaft with the chain put on it on the place on a shaft pin, preliminary having turned its distributive label (marksman) downwards.
  1. Шпонка a camshaft should be combined with a groove under it in an asterisk turned by a distributive label at 6 o'clock (downwards).
  1. Grease a carving of a bolt of an asterisk of a camshaft with hermetic for fixing of carving connections and tighten a bolt with demanded effort.
  2. Grease a chain with pure impellent oil.
  3. If the forward epiploon of a cranked shaft supposed leaks, replace its new (Section Replacement of a forward epiploon of a cranked shaft). If epiploon replacement is made on the cover of a distributive chain removed from the engine, lay a cover on pair wooden blocks and beat out from it an old epiploon inside with the help выколотки and a hammer.

Try not to scratch a wall of a nest of an epiploon and not to leave on them задиров and agnails. Begin to knock a new epiploon in a cover by means of a hammer and a replaceable head of the corresponding size.

  1. Before installation to a cover into place check up the integral lining of the pallet reinforced by metal картера on presence of cuts or deformation. If the lining is damaged, it is necessary to replace it (Has undressed Removal and pallet installation картера) before to start installation of a cover of a chain.
  2. Grease both parties of a new lining of a cover and corners of the pallet and the block with hermetic RTV and put a lining to the engine. Hermetic will keep it on the block.

If the pallet acted in film for lining replacement, establish a forward cover (a cover of a distributive chain) engine before to establish into place the pallet with its lining.

  1. Establish on the block a cover of a distributive chain. Insert bolts of fastening of a cover (except for what serve for fastening of the water pump) and tighten them by hand.
  2. Establish the water pump, having replaced its lining and tighten bolts of fastening of a cover of a chain with demanded effort.
  3. Establish pallet bolts картера and press the pallet to a chain cover.
  4. Grease a surface of a nave contacting to an epiploon демпфера крутильных fluctuations by pure impellent oil, then establish демпфер on a pin of a cranked shaft. Track correct combination шпоночного a groove демпфера with шпонкой a shaft. If to plant демпфер on a shaft manually it is not possible, put on its bolt the big washer and запрессуйте демпфер on a pin, tightening a bolt a face key. Remove from a bolt an auxiliary washer and tighten it with demanded effort.
  5. The further installation make in an order, the return to a removal order.
  6. Add in system a cooler and check up level of impellent oil. Start the engine and check up it on oil and cooler leaks.