822019 Removing and installing complete heater
WM 822019 Removing and installing complete heater
Tools
Technical values
Preliminary work
Remove left front wheel. => 440519 Removing and installing wheel - section on "removing"
Remove front left wheel housing liner. => 505619 Removing and installing front wheel housing liner - section on "removing"
Removing complete heater
Overview of complete heater
1. Unlock central plug -arrow A- and remove -arrow B-.
Pulling off central plug
Information
Before disconnecting the water lines, it is essential to observe the safety instructions in => 1001AW The most important working regulations and warning information - Group 19 - Cooling.
2. Drain coolant. => 193817 Draining and filling coolant (includes bleeding)
3. Clamp the two upper hoses -b- using a hose clamp 3094 -d-.
Disconnecting upper and lower hoses
4. Clamp the two lower hoses -c- using a hose clamp 3094 -d-.
5. Undo the fastening screw -arrow 1- and push the clamp downwards -arrow-.
Loosening the clamp
6. Release both spring band clamps using assembly pliers for spring band clamps, Cayenne hose connections NR.72-1 -a- ( -arrows A- ) and slide them off the adapters -arrow B-.
Releasing spring band clamps
7. Pull the two hoses off the lines -arrow C and D-.
8. Loosen the spring band clamps using the assembly pliers for spring band clamps, Cayenne hose connections NR.72-1 -a- ( -arrows A- ) and slide them off the adapters -arrow B-.
Releasing spring band clamps on adapters
9. Pull out muffler downwards -arrow A-.
Pulling out muffler downwards
10. Unscrew fastening screws -arrows 2-.
11. Pull out both lines together with the holder downward out of the hoses -arrows B-.
12. Unscrew fastening nut -arrow 3-.
Loosening the fastening nuts and pulling lines out from hoses
13. Pull the two lines down and out of the hoses -arrows-.
14. Unclip fuel line at the water tube -arrow-.
Unclipping fuel line at the water tube
Information
Before disconnecting the fuel line, it is essential to observe the safety instructions in => 1001AW The most important working regulations and warning information - Group 20 - Fuel supply, control.
15. Loosen the clamp -arrow A- and take out the fuel line along with the connecting hose -arrow B-.
Loosen clamp and pull out the fuel line.
16. Unscrew the fastening nut -4- and the fastening screw -5- and undo the holder with the lines.
Undoing the holder with lines
17. Unscrew the fastening screws -arrows 6- , disengage the holder -arrow A- and take out the complete heater -arrow B-.
Undoing the fastening screws and removing the heating
Installing complete heater
1. Engage the holder with the complete heating to the wheel housing -arrow A- and screw down the fastening screws -arrows 6-. => Tightening torque: 8 Nm (6 ftlb)
Installing heating and screwing down fastening screws
2. Push together the fuel line with the connecting hose -arrow A- and secure using the hose clamp -arrow B-.
Inserting fuel line and securing hose clamp
3. Clip in fuel line at the water tube -arrow-.
Clipping in fuel line at the water tube
4. Place the holder with the lines onto the threaded pin -arrow- and screw down the fastening nut -4- and the fastening screw -5-. => Tightening torque: 8 Nm (6 ftlb.) => Tightening torque: 8 Nm (6 ftlb.)
Screwing down holder with lines onto threaded pin
Information
- Before connecting the water hoses, apply suitable rubber lubricant to the flanges.
5. Insert the lines into both hoses -arrows A-.
Inserting and tightening the lines
6. Connect the muffler to the exhaust pipe -arrow B-.
7. Tighten the holder with the fastening screws -arrows 2-. When doing this, first screw in the inner fastening screw. => Tightening torque: 8 Nm (6 ftlb.)
8. Slide the clamp over the connection area -arrow C- and screw in the fastening screw -1-.
9. Slide the spring band clamps onto the connections using the assembly pliers for spring band clamps, Cayenne hose connections NR.72-1 -a- ( -arrow D- ) and align with the markings on the hose.
10. Relieve spring band clamps -arrows E- and secure the hoses.
11. Press in the lines into both hoses -arrows A- and screw down the fastening nut -3- on the side member. => Tightening torque: 2 Nm (1.5 ftlb.)
Pressing in lines into both hoses and screwing down on side member
12. Slide the spring band clamps onto the connections using the assembly pliers for spring band clamps, Cayenne hose connections NR.72-1 -a- ( -arrow B- ) and align with the markings on the hose.
13. Relieve spring band clamps -arrows C- and secure the hoses.
14. Push both hoses onto the lines -arrows A-.
Pushing hoses onto lines
15. Slide the spring band clamps onto the connections using the assembly pliers for spring band clamps, Cayenne hose connections NR.72-1 -a- ( -arrow B- ) and align with the markings on the hose.
16. Relieve spring band clamps -arrows C- and secure the hoses.
17. Unscrew the hose clamp 3094 and remove it.
18. Push together the plug connection -arrows A- until the locking lug -arrow B- engages securely.
Connecting central connector
Subsequent work
1. Fill in coolant and bleed cooling system. => 193817 Draining and filling coolant (includes bleeding)
2. Install front left wheel housing liner. => 505619 Removing and installing front wheel housing liner - section on "installing"
3. Installing front left wheel. => 440519 Removing and installing wheel - section on "installing"