DESCRIPTION & OPERATION
Cooling fan is controlled by Digital Motor Electronics (DME) control unit. See WIRING DIAGRAMS. Cooling module is separated by a partition (radiator core support) from the engine. (Scheme 1)and (Scheme 2).
Scheme 1
Scheme 2
SYSTEM TESTS
Note. Testing information is not available from manufacturer.
AUTOMATIC TRANSMISSION HEAT EXCHANGER
Note. Numbers in text refer to numbers in figures.
Removal & Installation
Unlock transmission coolant lines (1, 2) with Special Tool (17 0 030) and detach. (Scheme 3) Catch and dispose of escaping transmission fluid. Pull lock upward and detach heat exchanger toward rear. (Scheme 4) Check sealing rings and replace as necessary. (Scheme 5) To install, reverse removal procedure. Press lock (1) downward before pushing on heat exchanger. The lock must snap audibly into place when the heat exchanger is forced on.
Scheme 3
Scheme 4
Scheme 5
COOLANT EXPANSION TANK
Note. Numbers in text refer to numbers in figures.
Remove radiator cover. Remove fan cowl. See FAN COWL. Drain coolant. Disconnect electrical connection (1). Unfasten lock (2). (Scheme 6) Pull locks (1, 2) upward and detach coolant hose from radiator/coolant expansion tank. (Scheme 7) Pull lock (1) upward and detach coolant hose from coolant expansion tank. (Scheme 8) Pull coolant expansion tank upwards slightly out of carrier plate and pull out lower connection piece. Then tilt expansion tank to rear and remove. (Scheme 9) To install, reverse removal procedure. Check sealing rings. Do not under any circumstances coat sealing rings with an anti-seize compound before installation. Retaining lug must engage in opening on carrier plate.
Scheme 6
Scheme 7
Scheme 8
Scheme 9
COOLANT HOSE FAST RELEASE COUPLINGS
Note. Numbers in text refer to numbers in figures.
Unhook lock (1, 2) and disconnect hose. (Scheme 7) To install, reverse removal procedure. Check "O" rings. (Scheme 10) Do not coat "O" rings with an anti-seize compound. To assemble fast release coupling, press in lock (1) before installing fast release coupling. (Scheme 11) Push on hose. Fast release coupling must audibly snap into place.
Scheme 10
Scheme 11
FAN COWL
Note. Numbers in text refer to numbers in figures.
Turn ignition off. Remove radiator cover. See RADIATOR COVER. Lift out expansion rivet (1). Remove screw (2). Unlock and detach plug connections (3). Remove fan cowl (4) toward top. (Scheme 12) To install, reverse removal procedure.
Scheme 12
RADIATOR
Note. Numbers in text refer to numbers in figures.
Remove radiator cover. See RADIATOR COVER. Remove fan cowl. See FAN COWL. Drain off coolant. If installed, remove heat exchanger for automatic transmission fluid. On all models, remove coolant expansion tank. Unlock coolant hoses and detach. See COOLANT HOSE FAST RELEASE COUPLINGS. Lift radiator out of mountings. (Scheme 13) To install, reverse removal procedure.
Scheme 13
RADIATOR COVER
Note. Numbers in text refer to numbers in figures.
Remove screws along line shown in illustration. Do not remove screws (1) as they are bonded to cover (2). Remove radiator cover (2). (Scheme 14) To install, reverse removal procedure.
