SEAT Workshop Service and Repair Manuals

Fitting –  With heat exchanger removed, check for contamination of air conditioner unit (by way of heat exchanger duct). –  Remove any dirt or remnants of escaped coolant from the air conditioner unit (e.g. after removing a leaking heat exchanger).

–  Check seals -A-, -B- and -C- attached to heat exchanger. Only fit heat exchanger with intact seals.

–  Moisten new seals -A- slightly with coolant. –  Insert new seals -A- (included in scope of delivery of heat exchanger) in connections of heat exchanger -B-. –  Slide heat exchanger -C- into air conditioner unit.

–  Remove old clips -A- from both coolant pipes -B- and -C-. –  Attach new clips -A- (included in scope of delivery of heat exchanger) to both heat exchanger coolant pipes as shown. –  Press both coolant pipes -B- and -C- into connections of heat exchanger -D-. –  Re-check position of seals between coolant pipes and heat exchanger.

–  Attach the two coolant pipes -B- and -C- with clips -A- to the heat exchanger. –  Check position of both clips -A-. They must completely surround the flange at the heat exchanger and coolant pipe and not make contact with other components. –  Tighten bolts at clips -A- to 2.5 Nm. –  Connect the flexible tubes for the liquid coolant correctly to the heat exchanger. Observe markings: A -  Supply from cylinder head B -  Return tube to the water pump –  Re-install components removed (with the exception of driver's storage compartment) in reverse order. –  Bleed the coolant circuit → Engine, mechanics; Rep. Gr.19.   Note t  The arrangement of the coolant pipes to the heat exchanger of the air conditioner unit is such that the heat exchanger must also be bled. Proceed as follows: t  - Bleed coolant circuit. t  - Switch off ignition. t  - Carefully open cap at coolant expansion tank (heed safety precautions for opening cap) → Engine, Mechanics; Rep. Gr.19.

t  Unfasten clip at coolant hose -B-. t  Slide back hose -B- until hole in hose is no longer sealed off by pipe. t  Use cooling system tester -V.A.G 1274/- hand pump for example to increase pressure in coolant circuit. t  Bleed heat exchanger by way of hose -B- until there are no bubbles in coolant emerging. t  Attach coolant hose -B- and secure with clip. t  Top up coolant if necessary.

–  Check coolant circuit for leaks, paying particular attention to connection between coolant pipes and heat exchanger . → Engine Mechanics; Rep. Gr.19 –  Re-install driver's storage compartment and remaining components removed.