Cooling of the generator is provided by supplying liquid to it from the engine cooling system.
To drive the auxiliary units of the engine, a multi-ribbed crankshaft hub pulley with a parallel arrangement of seven streams, one after the other, is used. The diameter of the alternator belt pulley is 49 mm. The belt is used to drive the generator «7Kh1635», which simultaneously actuate the coolant pump and the power steering pump. For simplicity of presentation, this belt will be referred to as the alternator drive belt.
Attention! Work on replacing the generator should only be carried out on a cold engine. There is a danger of being burned by steam.
Generator replacement must be carried out in the following order.
Read information from storage device (memory) malfunctions of the electronic control unit ECU-KSUD. Switch off the ignition, disconnect «–» terminal from AB and insulate it.
Remove the alternator drive belt, fan cover, drain the coolant and send it for recycling.
Loosen the nut (1, fig. 4.122) and disconnect «+» the wire (2) AB from the generator, insulate the wire.
Disconnect loop (3) from the generator. Remove bolt (4) and remove the idler pulley. Remove bolts (5, М6х35) generator mounts.
Prepare a clean cloth to collect any remaining coolant. Pull the alternator forward, collect the remaining coolant and send it for disposal.
Installation of the generator should be carried out in the reverse order, while it is necessary to replace the sealing ring (3, see fig. 4.121) generator housing. If necessary, replace the alternator belt pulley, fill in coolant and bleed the cooling system, check it for leaks.
Nut (M6) mounts «+» tighten the AB wires to the generator with a torque of 7.0 Nm (0.7 kgf·m). When replacing the alternator pulley, tighten its fastening nut to a torque of 70 Nm (7.0 kgf·m).