S-SERIES AIR CONDITIONING - HEATER SYSTEM Figure 22.  - Hot Water Flow Control Valve Connections 8. Remove   flow   control   valve   mounting   screws. (Screw heads are located on bottom of blend-air unit housing.) 9. Remove control cable mounting bracket. 10. Disconnect adjustable link from blend-air door. 11. Rotate  control  valve  assembly  as  necessary  to withdraw lower neck of valve through grommet in bottom of blend-air unit housing.  Remove valve (Figure 23). 12. Disconnect   hose   clamp   and   remove   valve-to- heater core hose from valve. 13. Inspect  all   hoses   and   control   valve   inlet   neck grommet  in  bottom  of  unit  housing.    Replace  if damaged or deteriorated. Installation 1. Position   control   valve-to-heater   core   hose   on valve and tighten hose clamp. 2. Insert  lower  neck  of  flow  control  valve  through grommet in bottom of blend-air unit housing and rotate valve assembly into position. 3. Connect adjustable link to blend-air door. 4. Insert flange of cable bracket between flange of hot  water  flow  control  valve  bracket  and  inside wall of unit housing.  Align screw holes. 5. Insert  screws  from  outside  of  unit  housing,  thru cable mounting bracket and into tapped holes in valve bracket.  Tighten screws. 6. Connect inlet hose to lower neck  of  flow  control valve and tighten hose clamp. 7. Install heater core as outlined in this Section. 8. Connect   control   cable   to   blend-air   door   and install cable mounting screw. 9. Adjust  control  cable  as  outlined  under  Control Cable Adjustment. 10. Refill engine cooling system. 11. Set   heater   (HTR)   control   at   HOT.      Operate engine   and   check   for   coolant   leaks   and   for proper operation of flow control valve. 12. Install  covers  on  blend-air  unit  and  instrument panel. 13. Lower hood and fender assembly. Figure 23.  - Hot Water Flow Control Valve Removal CONTROL ASSEMBLY Removal 1. Make sure key switch is OFF. 2. Remove    control    assembly    mounting    screws. Remove control assembly trim plate.  Pull control assembly    outward    (Figure    24).        It    may    be necessary to remove ash tray to allow movement of control assembly. 3. Disconnect wiring harness connector from blower switch. CTS-4066A Page 15