Device and repair of Toyota RAV4 SUVs (Toyota RAV) - The water pump-//

Toyota PAB4-Toyota RAV4
1. Operation of the car
2. Maintenance
3. Engines
4. Cooling systems and conditioning
   General information
   Specifications
   Service and repair of the cooling system
      Thermostat
      Radiator fan
      Radiator and broad tank
      Water pump
      Sensor of the index of temperature of cooling liquid
      Radiator fan thermoswitch
      Heater fan electric motor
      Knot of management of systems of heating and air conditioning
      Heater radiator
   Check and service of the air conditioning system
5. Fuel system and system of production of the fulfilled gases
6. System of ignition
7. The control system and decrease in toxicity of the fulfilled gases
8. Coupling
9. Transmission
10. Driveshaft and shaft of the drive of driving wheels
11. Brake system
12. Suspension bracket
13. Steering and running gear
14. Body
15. Electric equipment
Schemes of electric equipment


Toyota RAV4>> Cooling systems and conditioning>> Service and repair of the cooling system>> Water pump
       PREVENTIONS
You make removal of the water pump on the cold engine.
Do not allow hit of cooling liquid on clothes and a paint and varnish covering of a body. Otherwise wash out a surface a large amount of water.
Collect and utilize the merged cooling liquid.

Check of the water pump
The faulty water pump can become the reason of serious damage of the engine.
Start the engine and warm up up to the working temperature. During the operation of the engine squeeze the top hose of a radiator. If the water pump works normally, in a hose pressure created by the pump will be felt.

       PREVENTION
In operating time of the engine you do not bring a hand too close to the fan and you are far away from the plane of rotation of the fan


Fig. 4.12. An opening arrangement for a drain of cooling liquid from the case of the water pump


The water pump has a drain opening for a drain of cooling liquid from a pump housing at damage of a sealing ring. The opening is located under a pump drive shaft from a pulley (fig. 4.12) . If about an opening there is a gray raid from the dried cooling liquid - it is the normal phenomenon. If there are dark brown stains, means it is necessary to make replacement or repair of the pump.
For check of wear of bearings of the pump shake a pump pulley. If there is a side play, it is necessary to replace or repair the pump.
Replacement of the water pump on release cars till 2001
Switch off ignition and disconnect a wire of "weight" from the rechargeable battery.
Merge cooling liquid.
Take off the gear belt directing and tension rollers.

Fig. 4.13. Arrangement of a bolt of fastening of an adjusting support of the generator


Turn out a bolt and remove an adjusting support of the generator (fig. 4.13) .
On cars with air conditioning system turn out bolts of fastening of the compressor of the conditioner. Move the conditioner compressor together with the wires and tubes attached to it aside and fix by a soft wire it on a body.

       PREVENTION
Do not open air conditioning system contour.

Disconnect the lower hose from a radiator.

Fig. 4.14. The water pump on release cars till 2001: 1 – thermostat casing; 2 – sealing ring; 3 – thermostat; 4 – adjusting support of the generator; 5 – water pump; 6 – laying; 7 – cover of the water pump; 8 – the directing roller of a gear belt; 9 – spring; 10 – tension roller of a gear belt; 11 – sealing rings; 12 – bypass pipe of the cooling system; 13 – laying


Turn out bolts of fastening of the water pump, at the same time note the provision of bolts as they have different length. Remove the pump and laying (fig. 4.14) . If the pump is not removed manually, bring down it a kiyanka.

Fig. 4.15. Otvorachivaniye of nuts of fastening of a pipe of a heater to the water pump


Disconnect a bypass pipe of the cooling system from the pump, then turn off 2 nuts and disconnect a heater pipe from the pump (fig. 4.15) . Uncover the water pump.
Clear the privalochny surfaces of the pump of the remains of sealant, laying and sealing rings.
Establish new sealing rings between a cover of the pump and the block of cylinders. Establish new laying under a heater pipe.

Fig. 4.16. An arrangement of bolts of fastening of the water pump which drag on the first stage on release cars till 2001


Fig. 4.17. The sequence of tightening of other bolts of fastening of the water pump on release cars till 2001


Install the pump with new laying and fix by bolts, first of all having tightened the bolts shown in the figure 4.16 then in the sequence shown in the figure 4.17 tighten other bolts.
You make further installation in the sequence, the return to removal.
Fill in cooling liquid.
Start the engine and be convinced of lack of leaks.
Replacement of the water pump on release cars since 2001
Switch off ignition and disconnect a wire of "weight" from the rechargeable battery.
Merge cooling liquid.
Weaken bolts of fastening of a pulley of the water pump, then take off a driving belt.
Release a plait of wires from a clip and take him aside from the water pump.

Fig. 4.18. An arrangement of bolts of fastening of the water pump on release cars since 2001


Turn out bolts and remove the water pump (fig. 4.18) .
Clear the privalochny surfaces of the pump of the remains of sealant and laying.

Fig. 4.19. The place of putting RTV sealant on the privalochny surface of the water pump


Apply the roller of RTV sealant with a diameter of 3 mm on outer side of a groove on the privalochny surface of the water pump (fig. 4.19) .
Install the water pump and fix it by bolts.
You make further installation in the sequence, the return to removal.
Fill in cooling liquid.
Start the engine and be convinced of lack of leaks.