3. Set the steering column switch: 6. The heat exchanger is connected to the · Measurewith a depth gauge betw

3. Set the steering column switch: 6. The heat exchanger is connected to the Measurewith a depth gauge between end of engine cooling system, and coolant flows steering shaft and steering-columnswitch through it when the engine is running. The cover plate (see figure). cooling system must be bled after removal Adjustment dimension 55 :t 0.5 mm or installation of the heater/air-conditioning unit (see Repair Group 19). 115 -96 4. Replace gasket between current distributor and firewall if necessary. After the current distributor is mounted on the firewall (tighten- ing torque 15 Nm (11 ftlb.)) the battery cable is tightened with a new hexagon nut M8. Tighteningtorque: 15 Nm (11 ftlb.) 5. Replacethe a-rings for the refrigerant lines at the expansionvalve and wet the new a-rings with refrigerant oil. Note If the heatingjair-conditioningunit is replaced, the refrigerant oil in the evaporator must be top- ped up. Determinethe quantity of the refrigerant oil and fill up again with refrigerant oil (volume removed by suction + 20 cm3). Refrigerantoil removed from a previouslyrun air- conditioningsystem may no longer be used (special-categorywaste). 87 -28 87 01 19 Installing and removing thle heating/air-conditioning unit 9968725 Printed in Germany, 1997