Q7 Quattro V6-3.6L (BHK) (2007)
Coolant Line/Hose: Service and Repair
Coolant Hose Pass-Through and Refrigerant Lines to Rear Wheel Housing
Coolant Hose Pass-Through and Refrigerant Lines to Rear Wheel Housing
Removing
-
Discharge A/C refrigerant system: => Refrigerant R134a - Servicing
-
Switch off ignition.
-
Release pressure in cooling circuit by opening cap on coolant expansion tank.
-
Remove left rear wheel housing liner. Refer to => Bumper See: Body and Frame/Bumper
-
Mark the arrangement of coolant hoses - A - (supply from engine to heater core) and - B - (return to engine).
-
Clamp off coolant hoses - A - and - B - (e.g. using hose clamps up to 25 mm dia. (3094)).
-
Disconnect coolant hoses - A - and - B - from coolant pipes - E - and - F -.
-
Seal coolant pipes - E - and - F - with sealing caps (for this purpose, use e.g. sealing caps 4D0 121 324).
-
Loosen coolant hoses from retainers - D -.
-
Remove hose clamps from coolant hoses - A - and - B -.
-
Hold coolant hose - B - in a container and blow the coolant via the coolant hose - A - out of heater core in rear heating & A/C unit using a
conventional compressed air gun.
-
Remove bolts - A - and disconnect refrigerant lines - B - and - C -.