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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Jeep Grand Cherokee (from 1993 to 1999, the year of issue)

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Jeep Grand Cherokee
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Jeep
Grand Cherokee
Introduction
Adjustment and routine maintenance
The straight six-cylinder engine
The V8 engine
general information
Repair procedure which does not require extraction of the engine from the car
Bringing in TDC position of first cylinder
Removal and installation of the cylinder head covers
Removal, check of a condition and installation of the rockers and bars of pushers
Replacement valve springs, their plates and valve stem seals
Removal and installation of the inlet pipeline
Removal and installation of final collectors
Removing and installing cylinder head
Replacement of a forward epiploon of a cranked shaft
Removal, check of a condition and installation of a cover of the distribution chain, the chain itself and its stars
Removal, check of a condition and installation of a camshaft and hydraulic tappets
Removing and installing sump
Removal, check of a condition and installation of the oil pump
Removal and installation of a flywheel / drive disc
Replacement back radical epiploon
Check 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 exhaust
The system of electric motor
Systems of decrease in toxicity of the fulfilled gases and engine management
Manual box of a gear change
Automatic Transmission
Transfer Case
Clutch and transmission line
Brakes
Suspension and steering
Body
The system of on-board electrical equipment
Controls and operation receptions
 


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Removing and installing cylinder head



Withdrawal

PERFORMANCE ORDER

  1. Disconnect the negative wire from the battery.
  2. Drain the cooling system (Head of Adjustment and routine maintenance).
  3. Remove the cylinder head cover (Section Removal and installation of the cylinder head covers). Remove the inlet pipeline (Section Removal and installation of the inlet pipeline).
  4. Disconnect the two heads of the exhaust manifold (Section Removal and installation of final collectors).
  5. Remove the rocker arm assembly and pushrods (Section Removal, check of a condition and installation of the rockers and bars of pushers).

Put all the components in an organized manner that guarantees the installation of the assembly on the former places.

  1. Operating in reverse order to illustrate the proposed 9.16, loosen the bolt heads, giving them 1/4 turn for each approach using the gate as long until it can be unscrewed by hand. To fix the head bolts are two types that differ in length - shorter set out.
  2. Remove the head from the engine. If the head is not separated from the unit, do not try to pry her arm, as this can cause damage to the mating surfaces. Instead, attach the head to the end of a piece of wood and tap it with a hammer. In a pinch, you can head to hook the tab casting. Place the removed head on wooden blocks in such a way as to prevent damage to their mating surfaces.
  3. The description of procedures of disassembly and check the status of invited heads in Chapter Procedures and general overhaul of the engine.

Setting

PERFORMANCE ORDER

  1. Prior to installation, carefully clean the mating surface of the head and block. Available in special solvents - ask in shops of automobile accessories.
  2. With gasket scraper to remove all traces of the mating surfaces of soot and old gasket material, then wipe the surface with a cloth soaked in acetone. If the installation left on the mating surfaces of traces of oil, it will lead to the emergence in the near future leaks. When the block on any work cover the cavity where pushers set with a cloth to avoid falling into the engine shavings, debris and other foreign objects. To remove debris from the cylinder, use a vacuum cleaner.
  3. Check the mating surfaces of the block and heads for scoring, burrs, scratches and other damages. Minor defects can be eliminated by treating the surface with sandpaper. With larger lesions should be given to resort to machining (milling) surfaces.
  4. Run the threaded holes in the block tap the desired size. Alternately, each of the clamping bolt head in a vise, pass their thread chaser, removing corrosion and restore damaged threads. Left in the thread dirt, corrosion and sealing defects and turns will affect the reliability of the efforts of a tightening of fixture definitions.
  5. Install the new gasket on the guide pins on the block.
  1. Install a new head gasket on each of the cans of the cylinder, putting it on the guide pins.
  1. Carefully put the head on the engine, taking care not to move with the pad.
  2. Before installing head bolts grease their carving uncured sealant such as Permatex ?�� 2 or equivalent.
  3. Set the screws to their original positions and tighten, first by hand. Acting in accordance with the procedure recommended in the accompanying illustration, tighten bolts in several stages to the required torque.

The procedure for tightening the cylinder head bolts.

  1. Further installation is made in the reverse order of removal. As mentioned in Section Removal, check of a condition and installation of rocker bars of pushers and, after tightening the rocker before the first start the engine, let hydraulic pushers "settle" for at least 5 minutes.
  2. Fill a cooler and change the engine oil and oil filter (Head of Adjustment and routine maintenance). Start the engine and check for serviceability of functioning and the presence of signs of leaks of refrigerant and oil.

Do not raise engine speed above turns of fast idling as long as the hydraulic tappets are filled with oil and re-start to run silently.





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Removal and installation of final collectors
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Replacement of a forward epiploon of a cranked shaft

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