Jeep Grandee Cheroki
+ Jeep Grand Cherokee brand Cars
+ Settings and routine maintenance
+ Ryadny six-cylinder engine
+ V8 Engine
- Procedures of the general and major maintenance of the engine
Major maintenance of the engine - the general information
Check of kompressionny pressure in cylinders
The diagnostic checks made by means of the vacuum gage
Methods of removal of the engine and necessary precautionary measures
Removal and engine installation
Options of restoration of the engine
Order of dismantling of the engine
Dismantling of a head of cylinders
Cleaning and check of a condition of a head of cylinders
Service of valves
Assembly of a head of cylinders
Removal of shatunno-piston assemblies
Removal of a cranked shaft
Cleaning of the block of the engine
Check of a condition of the block of the engine
Honingovaniye of cylinders
Check of a condition of shatunno-piston assemblies
Check of a condition of a cranked shaft
Check of a condition of radical and shatunny bearings
Engine assembly order after completion of its major maintenance
Installation of a cranked shaft and check of gaps of radical bearings
Installation of piston rings
Installation of shatunno-piston assemblies and check of gaps in shatunny bearings
The first start of the engine after major maintenance
+ Systems of cooling, heating and air conditioning
+ the 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
+ System of onboard electric equipment
+ Governing bodies and operation receptions
Removal of a cranked shaft
Extraction of a cranked shaft can be made only after the engine will be removed from the car. It is supposed also that a flywheel / the driving disk, a damper of krutilny fluctuations, a distributive chain, the case pallet, the oil pump and shatunno-piston assemblies are already removed from the engine.
- Before starting extraction of a cranked shaft measure its size axial люфта. Fix a tsiferblatny measuring instrument of plunzherny type on the block so that its rod appeared located coaxially with shaft and only touched a cheek of one of cranks (or to an end face of a pin of a shaft).
Definition axial люфта a cranked shaft by means of a tsiferblatny measuring instrument of plunzherny type.
- Take away a shaft against the stop back and null a measuring instrument. Then push a shaft against the stop forward and consider instrument reading. The measured moving of a shaft corresponds to size its axial люфта. If люфт exceeds admissible value, check persistent surfaces of a shaft on existence of signs of wear. If obvious signs of wear are not present, installation of new persistent bearings should help to correct a situation.
- In the absence of available tsiferblatny measuring instrument it is possible to use shchupy lezviyny type. Carefully take away a shaft in one of the parties against the stop. Fill щупами a gap between shaft and a forward surface of the persistent radical bearing. The total thickness щупов will be equal to size axial люфта in bulk.
Measurement of size axial люфта a cranked shaft with the help щупа lezviyny type.
- Check covers of radical bearings of a cranked shaft on existence of identification labels. Covers should be consistently numbered as their installation from a forward part of the engine to the back. If marking is absent, put it independently by means of a center punch. Covers of radical bearings are often equipped with the arrow cast on their top part specifying the direction forward on the engine. Weaken bolts of covers of radical bearings on 1/4 turns for one approach until there will be a possibility of untwisting by their hands. If hairpins are applied to fastening any of covers, remember their location that at assembly to establish on former places.
Covers of radical bearings are usually numbered in front back on the engine (shooter) - on V8 engines in volume of 5.2 l of number are located on the passenger party of covers.
- Carefully обстучите covers a hammer with soft brisk, then separate them from the block. In case of need use bolts as points of support for removal of covers by means of the lever. Try not to drop loose leaves if they act in film together with covers.
- Carefully take a cranked shaft from the engine. It is reasonable to resort here to the help of the assistant - the shaft is rather heavy. Having left loose leaves on the places in the block and covers, establish covers of radical bearings on the former places and by hand tighten fixing bolts.