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




Toyota RAV4>> Cooling and conditioning systems>> Service and repair of system of cooling>> Water pump
       PREVENTIONS
Removal of the water pump make 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.
Get the engine and warm up to working temperature. At operation of the engine compress the top hose of a radiator. If the water pump works normally, in a hose the pressure created by the pump will be felt.

       PREVENTION
In operating time of the engine do not bring a hand too close to the fan and 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 the pump case at damage of a sealing ring. The opening is located under shaft of a drive of the pump from a pulley (fig. 4.12) . If about an opening there is a gray raid from the dried cooling liquid — this normal phenomenon. If there are dark brown stains, means it is necessary to make replacement or pump repair.
For check of wear of bearings of the pump shake a pump pulley. If is available люфт, 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 "weight" wire from the storage battery.
Merge cooling liquid.
Remove 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 central air turn out bolts of fastening of the compressor of the conditioner. Move the conditioner compressor together with the wires attached to it and tubes aside and a soft wire fix it on a body.

       PREVENTION
Do not open central air contour.

Disconnect the bottom 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–a directing roller of a gear belt; 9–spring; 10-tension roller of a gear belt; 11-sealing rings; 12-bypass pipe of system of cooling; 13-laying


Turn out bolts of fastening of the water pump, thus note the provision of bolts as they have different length. Remove the pump and laying (fig. 4.14) . If the pump does not act in film 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 from the pump a bypass pipe of system of cooling, then unscrew 2 nuts and disconnect a heater pipe from the pump (fig. 4.15) . Uncover the water pump.
Clear privalochny surfaces of the pump of the remains of hermetic, 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 are tightened the first stage on release cars till 2001


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


Establish the pump with new laying and fix bolts, first of all having tightened the bolts shown in drawing 4.16 , then in the sequence shown in drawing 4.17 , tighten other bolts.
Further installation make in sequence, return to removal.
Fill in cooling liquid.
Get the engine and be convinced of absence of leaks.
Replacement of the water pump on release cars since 2001
Switch off ignition and disconnect a "weight" wire from the storage battery.
Merge cooling liquid.
Weaken bolts of fastening of a pulley of the water pump, then remove a driving belt.
Release from a clip a plait of wires 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 privalochny surfaces of the pump of the hermetic and laying remains.

Fig. 4.19. A place of drawing of RTV hermetic on a privalochny surface of the water pump


Put the RTV hermetic roller in diameter of 3 mm on outer side of a groove on a privalochny surface of the water pump (fig. 4.19) .
Establish the water pump and fix it bolts.
Further installation make in sequence, return to removal.
Fill in cooling liquid.
Get the engine and be convinced of absence of leaks.