Jeep Grand Cherokee

1993-1999 of release

Repair and operation of the car



Jeep Grand Cherokee
+ Cars of the Jeep Grand Cherokee brand
+ Settings and routine maintenance
+ Line six-cylinder engine
- V8 engine
   General information
   Repair procedures which implementation does not demand extraction of the engine from the car
   Reduction in the provision of VMT of the piston of the first cylinder
   Removal and installation of covers of heads of cylinders
   Removal, check of a state and installation of yokes and bars of pushers
   Replacement of valvate springs, their plates and maslootrazhatelny 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 bent shaft
   Removal, check of a state and installation of a cover of a distributive chain, chain and its asterisks
   Removal, check of a state and installation of the camshaft and hydraulic pushers
   Removal and installation of the pallet of a case
   Removal, check of a state and installation of the oil pump
   Removal and installation of a flywheel / driving disk
   Replacement of a back radical epiploon
   Check of a state and replacement of rubber pillows of support of the engine
+ Procedures of the general and capital repairs of the engine
+ Cooling systems, heating and air conditioning
+ A power supply system and production of the fulfilled gases
+ System of electric equipment of the engine
+ Systems of decrease in toxicity of the fulfilled gases and engine management
+ Manual box of gear shifting
+ Automatic transmission
+ Transfer case
+ Coupling and transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ System of onboard electric equipment
+ Governing bodies and methods of operation



Removal, check of a state and installation of yokes and bars of pushers

Removal

 PERFORMANCE ORDER

  1. Uncover with heads cylinders (The section Removal and installation of covers of heads of cylinders).
  2. Give bolts of yokes and remove their spherical support. Spread out the removed components on a workbench in an organized order or put in the marked packages/box with the purpose of the correct installation them at assembly.
  3. Take bars of pushers and put them also in an organized order (see an illustration below) for an installation guarantee at assembly for former places.

Each component of the valvate mechanism at assembly has to be installed on the former place therefore everything them should be put after removal in an organized order.


  1. It is the best of all to stick bars of pushers after removal in openings of the template which is specially made of a cardboard that guarantees correctness of their installation at assembly - pay attention to the arrow specifying the direction forward on the engine.

Check of a state

 PERFORMANCE ORDER

  1. Check each of yokes for existence of signs of wear, cracks and other damages, paying special attention to the sites contacting to bars of pushers and cores of valves.

Remember that on these engines need and a possibility of adjustment of valves is absent therefore strong wear of components of the valvate mechanism can easily lead to formation of an excessive valvate gap that, in turn, will lead to emergence of knock of valves during the operation of the engine.

  1. Make sure that passability of maslopodayushchy openings in a bar of each of pushers is not broken that guarantees adequate greasing of yokes.
  2. Check bars of pushers for existence of cracks and signs of excessive wear of end faces. Take for a drive each bar on a big splinter of a windowpane whether checking they are bent. In case of detection of defects replace bars.

Installation

 PERFORMANCE ORDER

  1. Turn the engine so that V8 tag on a damper was combined with VMT tag on a cover of a distributive chain that corresponds to position of the piston of the first cylinder in a point 17,5 ° after VMT.
  1. Before installation of bars of pushers and yokes turn the engine so that the tag of "V8" on a damper was combined with VMT tag on a cover.
  1. Grease the lower end faces of bars of pushers with pure motive oil or molibdensoderzhashchy lubricant and establish bars on the former places. Track that bars completely sat down in nests in pushers.
  2. Grease end faces of cores of valves and the top end faces of bars of pushers with molibdensoderzhashchy lubricant, then establish yokes on hairpins on the engine.
  3. Establish assemblies of spherical support and bolts of fastening of yokes. Tighten bolts with the required effort.

Do not turn the engine at least within 5 minutes after installation of bars of pushers and yokes - roller type hydraulic pushers have to "settle".

  1. Establish into place a cover of heads of cylinders (The section Removal and installation of covers of heads of cylinders). Start the engine, wiretap it on existence of the extraneous noises published by the valvate mechanism and check it for leaks around joints of covers with heads.

Do not increase the speed of rotation of the engine above turns of bystry idling to filling of pushers with oil then they have to begin to work silently again.