Service Infiniti QX4 since 1996 of release
1. Introduction
2. The maintenance instruction
3. Routine maintenance
3.1. The routine maintenance schedule
3.2. Specifications
3.3. The general data on options and adjustments
3.4. Check of levels of liquids
3.5. Check of a condition of tyres and pressure of their rating, rotation of wheels
3.6. Replacement of impellent oil and the oil filter
3.7. Check of a condition and replacement of the hoses located in an impellent compartment
3.8. Service of system of cooling (опорожнение, washing and refuelling)
3.9. Check, service and gymnastics of the storage battery
3.10. Check of a condition and belts of a drive of auxiliary units
3.11. Replacement of spark plugs, check of condition ВВ of electroconducting
3.12. Replacement of a filtering element of an air cleaner
3.13. Check of a condition and replacement of brushes of screen wipers, procleaning and adjustment snuffled givings of a washing liquid
3.14. Survey of components of a suspension bracket and a steering drive, check of a condition of protective covers of power shafts
3.15. Check of brake system
3.16. Check / adjustment of installations of turns of idling / a corner of an advancing of ignition / qualities of an air-fuel mix
3.17. Electric equipment check
3.18. Check of serviceability of functioning and service of systems of heating and an air conditioning
3.19. Greasing of locks, loops and an emphasis
4. The engine
5. Cooling and heating systems
6. Power supply systems and managements
7. Start and charge systems
8. A transmissionnaja line
9. Brake system
10. A suspension bracket and a steering
11. A body
12. An electric equipment


3.8. Service of system of cooling (опорожнение, washing and refuelling)

Do not suppose antifreeze hit on open sites of a body and the painted surfaces of the car. Casual splashes immediately wash off a plentiful quantity of water. Remember that antifreeze is extremely a toxic liquid and its hit in an organism even in small amounts is fraught with the most serious consequences (up to a lethal outcome).
Never leave antifreeze stored in leaky closed container and immediately collect cooling liquid spilt on a floor. Remember that the sweetish smell of antifreeze can draw to itself attention of children and animals.
About ways recyclings of the fulfilled cooling liquid consult with local authorities. In many regions of the world special points on any reception of working off are equipped. At all do not merge an old cooling liquid in the water drain and on the earth!

Recently nontoxical grades of antifreeze have been developed, however they also demand care in circulation.

Check of a condition of components


  1. The wide spectrum of engine failures is connected with infringement of functioning of system of cooling. On the models equipped АТ, the given system provides also cooling ATF, supporting thereby optimum conditions for transmission work.
  2. Check of a condition of components of system of cooling should be made after full cooling of the power unit (not less than in three hours after an engine stop).
  3. Uncover a broad tank. The cooling liquid being in system should be concerning transparent. If the liquid is painted in colour of a rust, the system should be washed out and filled by a fresh mix (see more low). If liquid level does not reach top, add in a broad tank of a little more mix of demanded structure (Check of levels of liquids see).
  4. Attentively examine top and bottom радиаторные hoses together with hoses of system of heating of the salon, having smaller diameter and located between the power unit and a partition of an impellent compartment. Check hoses on all their length and in case of revealing of cracks, swellings and signs of ageing of a material make replacement of defective components. Small cracks usually to make out at сжимании a hose easier.
  • Check hoses on presence of the wiped sites.
  • The rubber softening testifies to the beginning of its destruction as a result of ageing.
  • Too hard tightening of a collar for the purpose of more reliable fixing on the union / a branch pipe of the hardened hose does not promote the leak termination, and only leads to destruction of a material of a hose.
  • Check all hoses on presence of swellings and traces of infiltration of oil at end faces. Cracks and small breaks in rubber come to light at сжимании a hose is easier.

Composers of the present Management recommend to make replacement of hoses approximately time in two years without dependence from their condition.

  1. Check up reliability of fastening of all hoses on the unions / branch pipes. Leaks of a cooling liquid usually are shown in a kind потеков rusty or white colour on surfaces surrounding their source. If hoses are fixed on unions / branch pipes by collars of braided type, it will be reasonable to replace the last more reliable worm or screw.
  2. Having blown compressed air, or by means of a soft brush, remove from backlashes between plates of the heat exchanger of a radiator old leaves, remains of insects and other dust. Try not to damage soft plates of the heat exchanger and not to cut about their keen edges fingers.
  3. Regularly, according to the schedule of routine maintenance of the car (the routine maintenance Schedule see), the cooling system should be emptied, washed out and filled with a fresh mix of antifreeze with water. Such service allows to prevent corrosion development inside охладительного a path and appreciably raises efficiency of functioning of system.
  4. Do not forget about safety measures which should be observed at service of system of cooling (see the prevention above).



  1. Cock a lay brake and prop up wheels противооткатными boots. In case of need remove protection картера. It is necessary to start direct performance of procedures of service only after full cooling of the engine, i.e. after not less than several hours after trip end.
  2. Having waited definitive cooling of the engine, include ignition, include a heater сальна on the maximum productivity, then again turn a key in position OFF.
  1. Uncover a jellied mouth of a radiator.

If the engine has not completely cooled down yet, wrap up a cover rags for the purpose of risk elimination ошпаривания!

  1. For release of a cooling liquid from a radiator remove a stopper of the drain gate in the right bottom part радиаторной assemblages. If the stopper "has become attached", or is not provided absolutely not, disconnect from a radiator the bottom hose and merge a liquid through it.

  1. Remove drain stoppers of the block of the engine.

    A — the Drain stopper of the block of the engine
    B — the Drain stopper of the block of the engine


  1. For the purpose of freedom maintenance вытекания liquids ослабьте a stopper of release of air stoppers.

Cooling liquid should be lowered in drain capacity of the corresponding volume which it is necessary to prepare in advance. Try not to admit antifreeze hit in eyes and on open sites of a skin.

  1. In case of need, while the liquid merges from the block, disconnect a hose from a broad tank and remove last. Wash out a tank pure water (in case of need with soap). Clear уровневые labels on tank walls.
  2. Check up a condition радиаторных hoses and hoses of system of heating, and also collars of their fastening on unions and branch pipes (see above), replace the failed components.



  1. For washing of system of cooling submit to a radiator pure water from a garden hose.
  2. As soon as water will start to follow from drain gates pure, free from products of corrosion, stop washing and strongly tighten stoppers of drain gates.
  3. In cases of especially strong pollution or infringement of passableness of a radiator remove last and make it обратнопоточную washing, having filled a garden hose in the bottom branch pipe, — if to achieve positive result it is not possible, deliver a radiator in a workshop of car-care centre for carrying out of necessary regenerative repair.
  4. Products of corrosion and dense adjournment leave from a path of system of cooling by chemical processing, — follow instructions of manufacturers of the cleaner got by you.

At regular performance of procedures of washing of system and replacement of a cooling liquid necessity for carrying out of chemical processing of a path should not to arise.



  1. Check up serviceability of a condition and reliability of fastening of all hoses охладительного a path. Replace defective components, tighten collars.
  2. Start to fill in slowly a fresh mix of antifreeze with water in a radiator mouth. Continue refuelling until liquid level in a tank will not rise to a mark the MOVE on the translucent case of the last.
  3. Establish into place a cover of a radiator and tighten a stopper of release of air stoppers on the top hose of a heating path.
  4. Start the engine and allow to it to get warm to normal working temperature, then, send on errands it on single turns of an order of 2-3 minutes, — on a measuring instrument on instrument a guard track, that the engine did not overheat. Muffle and wait full cooling.
  5. Examine components of system of cooling on presence of signs of development of leaks, then check up level of a cooling liquid in a broad tank, in case of need make corresponding updating.
  6. Translate handles of a choice of temperature of submitted air and a choice of a high-speed mode of the fan on the maximum productivity.
  7. Start the engine, warm up it to normal working temperature.
  8. In summary make one more control check of level of a liquid (Check of levels of liquids see).

On page back
3.7. Check of a condition and replacement of the hoses located in an impellent compartment
On the following page
3.9. Check, service and gymnastics of the storage battery