Nissan Maxima QX

since 1993 release

Repair and operation of the car


Nissan Maxima QX
+ Cars of the Nissan Maxima brand
+ Maintenance instruction
+ Settings and routine maintenance
+ Engine
- Cooling systems, heating
   General information
   Antifreeze - general information
   Check of serviceability of functioning and replacement of the thermostat
   Check of a condition of fans of the cooling system and chains of their inclusion, replacement of components
   Removal and installation of a radiator and expanded tank of the cooling system
   Check of a state and replacement of the water pump
   Check of serviceability of functioning and replacement of the block of the sensor of the measuring instrument of temperature of cooling liquid
   Check of serviceability of functioning of a driving electric motor of the fan of a heater and condition of components of its electric chain, …
   Removal and installation of an electric motor of the drive of the fan of a heater
   Removal and installation of assembly of the control panel of functioning of a heater and conditioner of air, adjustment of a driving cable
   Removal and installation of the heat exchanger of a heater
   Check of serviceability of functioning and service of systems of heating and air conditioning
   Removal and installation of a receiver dehumidifier To/in
   Removal, service and installation of the K/V compressor
   Removal and installation of the K/V condenser
+ Power supply system and release
+ Engine electric equipment
+ Control systems of the engine
+ Transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Removal and installation of the heat exchanger of a heater

The cars considered in the present manual are equipped with system of additional safety of SRS better known as a safety cushion. Before performing any works near assembly of a pillow or a steering column, without fail disconnect system in order to avoid getting injured as a result of its casual operation (see the Head Onboard electric equipment). Isolation and contact sockets of an electrical wiring of a chain of SRS are painted in bright yellow color. It is not necessary to connect any diagnostic units to this chain!

The air conditioning system constantly is under high pressure. Do not disconnect refrigerator lines at all and do not remove any components of system, previously without having executed a discharge of the last. The discharge of the air conditioning system has to be made by forces of the skilled expert in the conditions of a workshop of car service. At a rassoyedineniye of refrigerator lines surely put on goggles!

Do not allow hit of antifreeze on open parts of the body and the painted surfaces of the car. Immediately wash away incidentally got splashes a plentiful amount of water. Remember that antifreeze is extremely 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 the cooling liquid spilled on a floor. Remember that the sweetish smell of antifreeze can draw to itself attention of children and animals. About ways utilization of the fulfilled cooling liquid consult at any station of car service. In many regions of the world special points on different reception of working off are equipped. Do not merge old cooling liquid in the sewerage and on the earth at all!


Recently nontoxical grades of antifreeze are developed, however they are also subject to utilization in an organized order.

Before starting implementation of the procedure, wait for full cooling of the engine.

It will be reasonable to charge implementation of the procedure of replacement of the heat exchanger to specialists of car service.


 PERFORMANCE ORDER

1. At the corresponding complete set of the car make a discharge of the air conditioning system at car repair shop.
2. Transfer the handle of management of functioning of a heater to the provision of the maximum heating (NOTES). Empty the cooling system (see the Head Nastroyki and routine maintenance). If replacement of cooling liquid was made recently, keep it for further use.
3. Disconnect a negative wire from the battery.

If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that you have the correct combination for input of the audio system in action!

4. In a motive compartment disconnect hoses of a cooling path of the engine from inlet and final branch pipes of the heat exchanger of a heater on a back partition of a motive compartment.

The "stuck" hoses will be more reasonable to be cut off in order to avoid casual damage of branch pipes.

5. Release rubber tubes of branch pipes through passage of the heat exchanger of a heater from a partition of a motive compartment.

6. At the corresponding complete set of the car disconnect refrigerator lines from the air conditioner evaporator heat exchanger, remove the rubber plug through passage.

At a detachment of refrigerator lines surely put on goggles!

7. Release a fixing collar and disconnect a driving cable of the gate of management of supply of cooling liquid in the heater heat exchanger. Release a cable from a partition of a motive compartment that it could be removed complete with a heater casing.

8. Lower a steering column. Also remove the dashboard (see the Head Kuzov). Remove an expansion intensifying bar of the dashboard.

Before starting extraction of the heat exchanger make sure that all clamps are released.

9. Remove a floor air duct with steel intensifying bars, disconnect the corresponding electrical wiring, then remove assembly of the onboard processor (RSM).

10. Disconnect an air duct sleeve from the lower part of a casing of the heat exchanger of a heater.

11. At the corresponding complete set of the car remove assembly of a casing of the heat exchanger of the evaporator, or the air duct located from the passenger (model without To/in).

12. Give bolts/nut of fastening of assembly of a heater to a partition of a motive compartment. Disconnect cables of management.

13. Delay assembly of the heat exchanger down and back, - track that all clamps were released. In case of need slightly rotate assembly for the purpose of office it from the top sleeves.
14. Take the heat exchanger from assembly of a heater.

15. Collect a heater and check serviceability of functioning of all gates. Make necessary corrections.
16. Installation of components is made as it should be the return to an order of their dismantle. Tighten fixture (bolts/nut) of a steering column to a basic arm with effort of 5 ÷ 18 Nanometers.
17. Fill the cooling system and remove from it air traffic jams (see the Head Nastroyki and routine maintenance). Connect the battery and start the engine. Check components of system of heating for existence of signs of leaks and serviceability of functioning. Make a recharge of the air conditioning system.