When working on the oil, fuel and coolant circuits, the generator must be protected from contamination.
1. Disconnect the negative cable from the battery.
2. Remove the alternator drive belt (see chapter Engine).
3. On models with engines M57, M67 and M73 remove the cooling fan shroud (see chapter Engine cooling, heating, ventilation and air conditioning systems).
M51 engine
1. Disconnect the cooling air hose from the generator.
2. Disconnect the connector (1) on the generator.
3. Turn out the bottom bolt of fastening of the generator and bolts of fastening of the GUR reservoir to a forward side member.
4. Turn out the top bolt of fastening of the generator.
5. Disconnect the wiring connector (1) and remove the protective cap (2).
6. Give a nut, remove a wire of a chain of a charge and a wire to a conclusion of plus of the rechargeable battery.
7. Remove the generator.
8. Installation is carried out in the reverse order, observe the tightening forces of the fasteners. To facilitate installation, first press out the bushings from the front side member.
1 - The position of the bushings after removal
2 - Mounting position
Engines M52, M52TU
1. Remove the air cleaner housing (see chapter Power supply and exhaust systems) and the cooling fan drive clutch (see chapter Engine cooling, heating, ventilation and air conditioning systems).
2. If necessary, empty the power steering fluid reservoir, remove it together with the bracket and set it aside.
Do not disconnect piping from the tank.
3. If installed, remove the air hose.
4. In version No. 1, remove the plugs of the connectors, disconnect the connector (1), give the nut (2) and remove the positive battery cable.
5. For version #2, disconnect the connector (1), give the nut (2) and remove the positive battery cable.
6. In the version without a bypass roller, turn out the alternator fastening bolts one by one, while holding it. Remove the generator.
7. In the version with a bypass roller, remove the cover from it, unscrew the bolt and remove the roller (1). Remove the bolt and remove the alternator (2).
8. Installation is carried out in the reverse order. In the version with a bypass roller, its lock must enter the groove of the generator.
M57 engine
1. Remove the bolts (1) and remove the duct (2). Unclench clamps (3), remove the expansion tank towards the top and set aside.
2. Disconnect the connector (1) generator, remove the protective cap (2) positive battery cable, give the nut (3) and remove the positive battery cable.
3. Remove the bolt (1) and film the video (2).
3. Turn out bolts (1) on the generator, remove the bracket (2) and remove the alternator towards the top.
4. If necessary, turn out the bolts (1) and remove the support bracket (2) generator.
M60, M62 engines
Air cooled generator:
1. Remove the oil filter housing mounting bolts and move it aside.
2. Disconnect the electrical wiring from the generator by loosening the fixing nuts and disconnecting the connectors.
3. Unclip the cooling air guide.
4. Turn out bolts (1-3), pull the alternator forward and remove it towards the top.
Do not damage the cooling system radiator fins.
5. Installation is carried out in the reverse order. Replace alternator pulley if necessary.
Liquid cooled generator
1. Remove the fan impeller together with the fan drive clutch from the water pump (see chapter Engine cooling, heating, ventilation and air conditioning systems). Drain coolant (see chapter Vehicle settings and routine maintenance).
2. Remove the bolts (1) on the generator.
3. Remove the bolt (1), remove the wire (2) battery, disconnect the connector (3), remove the bolt (4), remove the roller and set aside. Remove the remaining three bolts (5) generator mounts.
4. Pull the generator forward.
When dismantling the generator, the remnants of the coolant flow out. To facilitate dismantling, if necessary, disconnect the upper coolant hose.
5. Installation is carried out in the reverse order. Replace the alternator o-ring. At the end of the work, fill and bleed the cooling system (see chapter Vehicle settings and routine maintenance).
M67 engine
1. Loosen clamp (1) on the left pressure pipe (2) and disconnect it.
2. Loosen clamp (1) and remove the pressure pipe (2).
3. Remove the cover from the bolt (1) roller, unscrew the bolt, move the tensioner to the side and remove the bypass roller (2).
4. Give the nut (1) and remove the positive wire (2) battery. Disconnect connector (3) generator.
5. Turn out bolts on the generator.
The bottom bolt (1) turn it halfway first, then set aside the mounting plate (2) to the side, pull the generator out a little (3) and let the coolant drain. Only then unscrew the lower bolt completely. Remove the generator.
6. Installation is carried out in the reverse order. Replace alternator gasket.
M73 engine
1. Remove the left air cleaner assembly (see chapter Power supply and exhaust systems).
2. Loosen the radiator hose clamp.
3. Loosen the clamp and remove the cooling air hose.
4. Give bolts of fastening of the generator (see illustration) and push it forward.
5. Disconnect the electrical wiring from the generator by loosening the fixing nuts and disconnecting the connectors.
6. Remove the alternator upwards, taking care not to damage the radiator of the cooling system.
7. Installation is carried out in the reverse order. Replace alternator pulley if necessary.