Coolant pump, 4-cyl.
| Coolant pump, 4-cyl. | 
| 
 | |||||||
| To remove | 
| 1. | Open the cap on the expansion tank and release the pressure.   | |
| 2. | Raise the car. | |
| 3. | Remove the lower front cover. | |
| 4. | Drain off the coolant. | |
| 5. | Lower the car to the floor.   | |
| 6. | Unplug the mass air flow sensor connector. | |
| 7. | Remove the air hose and mass air flow sensor. | |
| 8. | Off-load the multigroove V-belt using the pull bar, part no. 83 95 254.   | |
| 9. | Remove the belt from the power steering pump and water pump. | |
| 10. | Remove the crankcase breather pipe, fastened to the turbo intake pipe, and the camshaft cover.   | |
| 11. | Unplug the boost pressure control valve connector. | |
| 12. | Remove the engine lifting eyelet. | |
| 13. | Loosen the hoses to the turbo's wastegate valve. | |
| 14. | Remove the bypass pipe with valve. 
 | |||||||
| 15. | Remove the exhaust manifold heat shield. The heat shield is attached with a nut and two clips on the underside.   | |
| 16. | Undo the quick-release coupling on the vent hose, using tool 83 95 261. | |
| 17. | Remove the turbo intake pipe. | |
| 18. | Remove the intake pipe. | |
| 19. | Plug the turbo inlet using a plastic plug or the like. | |
| 20. | Undo the power steering pump.   | |
| 21. | Move the power steering pump aside. | |
| 22. | Remove the hose clips and hoses on the coolant pump inlet. | |
| 23. | Detach the two longitudinal coolant pipes from the engine block. | |
| 24. | Detach the two longitudinal coolant pipes from the coolant pump. | |
| 25. | Slacken the bolt (by the turbo) securing the coolant pipe from the coolant pump. | |
| 26. | Remove the coolant pipe from the coolant pump. | |
| 27. | Undo the coolant pump retaining bolts.   | |
| 28. | Carefully work the pump free from the bracket and from the pump's connecting piece on the engine block. | |
| 29. | Remove the connecting piece from the engine block and inspect its seals, Change the seals as necessary. 
 | ||||||||||
| To fit | 
 
    
    | Note | ||
| Spray the connectors with Kontakt 61 contact cleaner, part No. 30 04 520. | 
| 1. | Fit the connecting piece to the engine block. Coat seals with Gleitmo 805, part. No. 30 06 442. | |
| 2. | Fit the coolant pump. Tightening torque: 22 Nm (16.2 lbf ft) | |
| 3. | Fit and tighten the coolant pipe to the coolant pump and by the turbo.   Tightening torques: Banjo bolt, turbo: 25 Nm (18.4 lbf ft) Banjo bolt, coolant pump: 20 Nm (14.7 lbf ft) | |
| 4. | Fit the two longitudinal coolant pipes to the coolant pump. Tightening torque: 10 Nm (7.4 lbf ft) | |
| 5. | Fit the two longitudinal coolant pipes to the engine block. | |
| 6. | Fit the hose clips and hoses to the coolant pump inlet. | |
| 7. | Fit the power steering pump. Tightening torque: 24 Nm (17.7 lbf ft) | |
| 8. | Extract the plug from the turbo inlet and then fit the intake pipe.   Tightening torques: V-clamp 3 Nm (2 lbf ft) | |
| 9. | Reconnect the vent hose. | |
| 10. | Fit the exhaust manifold heat shield. Tightening torque: 20 Nm (15 lbf ft) | |
| 12. | Fit the hoses to the turbo's wastegate valve. | |
| 13. | Fit the engine lifting eye. | |
| 14. | Plug in the boost pressure control valve connector. | |
| 15. | Fit the crankcase breather pipe, fastened to the turbo intake pipe, and the camshaft cover. Tightening torques: Crankcase breather pipe 24 Nm (18 lbf ft) | |
| 16. | Fit the multigroove V-belt and tension it with the belt tensioner. Use the pull bar part no. 83 95 254.   | |
| 17. | Fit the air hose and mass air flow sensor.   | |
| 18. | Plug in the mass air flow sensor connector. | |
| 19. | Switch off the A/C or ACC. Fill with coolant to the MAX level. Refer to
       
        Coolant
       
       for mixtures. Do not forget to close the drain plug on the radiator first. Close the expansion tank lid. | |
| 20. | Start the engine and run unloaded until warm at varying engine speeds until the radiator fan starts. | |
| 21. | Turn off the engine and top up to the MAX level. | |
| 22. | Inspect the system for possible leaks. | |
| 23. | Raise the car. | |
| 24. | Fit the lower front cover. | |
| 25. | Lower the car to the floor. | |

 Warning
                Warning
                
        
		