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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Nissan Maxima QX (1993 release)

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Nissan Maxima QX
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Maxima QX
Introduction
Operating Instructions
Adjustment and routine maintenance
Engine
Engines SOHC
Engines DOHC
Total engine overhaul
general information
Checking oil pressure
Check the compression pressure in the cylinders
Diagnostics of the engine with vacuum gauge application
Alternative variants of schemes of regenerative repair of the engine
Removal of the power unit from the car - preparation and precautions
Removing and installing engine
An order of dismantling of the engine by its preparation for major repairs
Dismantling of a head of cylinders
Cleaning and checking the status of a head of cylinders
Service valves
Assembling the cylinder head
Removing the connecting rod and piston assembly
Removing the crankshaft
Cleaning the engine block
Checking the status of the unit
Honing of cylinder bores
Checking the components connecting rod and piston group
Checking the status of the crankshaft
Check and selection of loose leaves main and connecting rod bearings of the crankshaft
Checking the camshafts, valve tappets and bearings
The order of assembly of the engine
Installation of the piston rings
Installation of a cranked shaft and check of working backlashes of radical bearings
Installing the crankshaft rear oil seal
Installing the connecting rod and piston assemblages and check of size of working backlashes in connecting rod bearings of the crankshaft
Test run and running the engine after major repairs
System of cooling, heating
The power supply system and release
Electric motor
Engine Control Systems
Transmission
Coupling and power shafts
Brakes
Suspension and steering
Body
Onboard electric
 


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Removal of the power unit from the car - preparation and precautions



Before proceeding to dismantle the engine to meet its total or major repairs, need to take some preparatory steps.

It is extremely important to have well-equipped working platform. The site should be large enough to accommodate her car, durable workbench / mounting stand, as well as the necessary materials and equipment. The best option is a large garage and a covered workshop. In the extreme case fit a flat area with an asphalt or concrete surface.

It should also take care of the equipment storage space is removed from the engine components, tools and other materials. It is best suited for this purpose lightweight collapsible rack with shelves wide enough.

Before proceeding to dismantle the power unit, clean the engine compartment and an outer surface of the engine that will help to keep clean and tidy used tool.

A necessary condition for the success of the work is the presence of winches, A-frame or other suitable lifting equipment. Make sure that the lift and rigging matched by its lifting characteristics of the total weight of the power unit (motor with transmission). Do not forget about the need for strict compliance with safety regulations.

If the extraction engine is the first time an amateur mechanic, you should enlist the support of a more experienced colleague. Timely filed advice will save you time and minimize the risk of injury or damage to the components / equipment. In the extraction process unit out of the car there are many situations where the individual procedures should be performed at the same time, it is often very difficult to produce by one person.

Try to pre-plan all aspects of the work. Prepare the necessary tools and equipment. Among the special equipment, greatly facilitate the implementation of the forthcoming work and significantly increase the level of safety are powerful trolley jack with a hydraulic drive, a set of wrenches and replaceable face heads with a suitable (preferably ratchet) drive, a pair of solid wooden blocks, as well as a sufficient amount of cloth and a solvent to remove any traces of fuel, oil and coolant. In the absence of personal use of lifting equipment before taking hoist rental, try to advance to perform all the necessary preparatory work in order to maximize the reduction of the lease and, therefore, and related material costs.

Get ready to abandon the use of the vehicle at the time of repair. Implementation of the procedures that require highly qualified personnel and special equipment, it is necessary to entrust the service specialist. Remember that repair shops usually have a very tight schedule downloads, so it is wise to take care in advance and agree on the timing of your order.

Work slowly, in an organized manner, be careful not to violate the basic rules of safety!




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Removing and installing engine

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