Gasoline engine
1. Bolt M6x45, 10 Nm.; 2. Bolt M6x95, 10 Nm.; 3. Bolt M6x25, 10 Nm.; 4. Bolt M8x85, 20 Nm.; 11, 12, 32. Coolant hoses; 33. Pulley; 33a. Bolt, 12 Nm.; 35. Paper sealing gasket
Removal
1. Disassemble the hydraulic clutch of the cooling system fan.
2. Drain the coolant into a suitable container.
3. Remove the 3 coolant hoses from the water pump. First, open the clamps completely and push them back.
4. Loosen, without removing, the bolts on the water pump pulley.
5. Remove the V-ribbed belt.
6. Unscrew and remove the water coolant pump pulley.
7. 6-cylinder engine: Unscrew the bolts (263/264) on the engine cylinder block and remove the water cooling system pump.
8. Thoroughly clean the sealing surfaces on the pump housing and steering gear housing cover.
Installation
1. Screw on the liquid cooling system pump using a new paper sealing gasket.
Caution! The pump is sealed with a liquid sealant at the factory. During assembly, you can use a paper sealing gasket or a liquid sealant such as Loctite. In this case, lubricate the sealing surfaces on the liquid cooling system pump with the sealant evenly and, if possible, in a thin layer.
2. Bolt on the water pump pulley.
3. Put on the ribbed V-belt.
4. Tighten the bolts on the water pump pulley until secure.
5. Install all coolant supply hoses and secure them with clamps.
6. Install the cooling fan hydraulic clutch.
7. Fill with coolant.
2.0L Diesel Engine
2. Bolt, 10 Nm If the bolt has an internal torsion head, the tightening torque is 15 Nm.; 3. Coolant hose; 4. Heating system hose; 5. Pulley; 6. Liquid cooling system pump; 7. Drain line; 8. Bolt; 9. Guide bushings 10. Seal; 11. Liquid cooling system pump housing; 12. Guide bushings; 13. Bolt, 25 Nm.; 14. Compaction; 15. Generator; 16. Generator stand; 17. Sealing ring; 18. Recirculation fuel line
Removal
1. Disconnect the ground (–) cable from the battery.
Attention! This will erase the radio's anti-theft code.
2. Remove the cooling fan hydraulic clutch.
3. Drain the coolant into a clean container.
4. Loosen, without removing, the system pump pulley bolts.
5. Remove the V-ribbed belt.
6. Unscrew and remove the water coolant pump pulley.
7. Remove the coolant supply hoses (3) and (4) from the pump. First, open the clamps completely and slide them back.
8. Remove the generator.
9. Unscrew the generator stand.
10. Unscrew the liquid cooling system pump housing and remove it together with the pump. When removing the housing, remove the fuel recirculation line.
11. Unscrew and pull out the liquid cooling system pump.
12. Thoroughly clean the sealing surfaces of the liquid cooling system pump, its housing and the engine cylinder block.
Installation
1. Screw on the water pump with a new paper gasket to a torque of 10 Nm.
[Read more on the website: Mercedesman.ru]
2. Screw on the liquid cooling system pump housing with a new paper gasket with a torque of 10 N·m. At the same time, fit the recirculation fuel line, pre-wetting the sealing ring with coolant, do not use oil.
3. Tighten the generator stand to a torque of 25 Nm.
4. Install the generator.
5. Install all coolant supply hoses and secure them with clamps.
6. Bolt on the water pump pulley.
7. Install the ribbed V-belt.
8. Tighten the water pump pulley to a torque of 10 Nm and, respectively, to a torque of 15 Nm in the case of internal torsion head bolts.
9. Install the fan hydraulic clutch.
10. Fill with coolant.
11. Connect the ground wire to the battery terminal.
12. Set the time on the clock.
13. Enter the radio anti-theft code.
Features of the 2.2/2.5L diesel engine
1. Heat exchanger pipeline – coolant – oil; 2. O-ring with circular cross section; 3. Coolant supply hose; 4. Inclined heating system hose; 5. Liquid cooling system pump pulley 6. Liquid cooling system pump; 7. Drain pipe; 8. Bolts M6x35 (7 pieces); 9. Guide bushings; 10. Pump seal; 11. Pump body; 12. Guide bushings; 13. Bolts M6x50 (6 pieces); 14. Pump body seal
1. Unscrew and disconnect the oil - coolant - heat exchanger lines on the pump body.
2. Install the oil-coolant-heat exchanger pipes on the pump body and replace the O-rings.