Water pump — removal and installation (Renault Symbol 2)

The coolant pump provides forced circulation of coolant through the cooling system. It is mounted at the front of the cylinder block and is driven by the crankshaft via a timing belt.





The water pump cannot be repaired, so if there is increased noise or fluid leaks, it must be replaced.

Removal

• disconnect the negative battery cable;
• drain the cooling system by removing the lower hose from the radiator;
• remove the timing belt and tension roller (see subsection "Cylinder head");

• remove the acoustic load (Figure 3.81);

• loosen and unscrew the water pump mounting bolts (Figure 3.82), remembering their installation, since they are of different lengths;
• remove the water pump assembly from the cylinder block;
• clean the mating surfaces of the pump and cylinder block. It is strictly forbidden to use tools with a sharp edge for this. Use Decapjoint, which dissolves gasket residues.

Apply the specified product to the surface to be cleaned, wait for about 10 minutes, then remove the product with a wooden spatula. It is recommended to perform this operation wearing protective gloves. Do not allow the cleaning product to come into contact with paintwork.

Installation

• apply a 0.6-1.0 mm wide bead of Loctite 518 sealant (Figure 3.83) on the mating surface of the pump being installed;
• install the pump on the cylinder block, put the bolts in their places and tighten them preliminarily to a torque of 8 N·m in the sequence shown in Figure 3.83, then finally tighten the M6 bolts to a torque of 11 N·m, and the M8 bolts to a torque of 22 N·m;

Note: Apply 1-2 drops of Loctite Frenetanch to bolts 1 and 4 (see Figure 3.83) water pump mounts.

• perform the remaining operations in the reverse order of removal;
• check for coolant leaks.