SERVICE MANUAL 8. If    necessary,    position    sealed    beam    unit    in headlight mounting ring and secure with retaining ring and screws. 9. Connect  three-way  wiring  connector  to  rear  of sealed beam unit. 10. Engage   mounting   slots   in   headlight   mounting ring   into   collar   grooves   of   adjustment   screws. Connect  headlight  retaining  spring  to  headlight mounting ring. 11. Install headlight bezel and secure with screws. CAUTION DO NOT overtighten bezel retaining screws. Overtightening     could     cause     damage     (stripping)     of threads in hood (fender). 12.  Check light operation. 13.  Check headlight aim.  (See HEADLIGHT AIMING). FRONT TURN SIGNAL/MARKER LIGHTS BULB REPLACEMENT Procedure  applies  to  either  turn  signal  or  side marker bulbs.  Refer to Figure 9. 1. Remove lens mounting screws and remove lens. 2. Press  bulb  inward  and  turn  counterclockwise  to remove bulb from socket. 3. Inspect bulb socket.  If rusty or corroded, replace place  light  assembly.    Inspect  lens  gasket  and replace if damaged. 4. Insert new bulb in socket, press inward and turn clockwise to lock in place. 5. Position lens and gasket on light body and install lens mounting screws. 6. Check light operation. Fig. 9 Front Turn Signal/Marker Light 1.  Light Assembly 2.  Bulb (Turn Signal) 3.  Bulb (Marker) LIGHT ASSEMBLY REPLACEMENT 1. Disconnect    wiring    cable    from    base    of    light assembly. 2. Remove   nuts,   washers   and   wiring   cable   clip (where used) from light mounting studs. Remove   nuts   and   washers   from   light   guard mounting bolts (if equipped). 3. Remove  light  assembly  (and  light  guard)  from fender. 4. Inspect    light     mounting     pad     and     replace     if damaged or deteriorated. 5. Position mounting pad, light assembly (and light guard) on fender. 6. Install  washers  and  nuts  (and  cable  clip,  where used) on light mounting studs.  Install light guard mounting bolts, washers and nuts (if equipped). 7. Plug wiring cable connector into light assembly. 8. Tighten light (and light guard) mounting nuts. 9. Check light operation. CLEARANCE AND IDENTIFICATION LIGHTS (CAB) BULB OR LIGHT ASSEMBLY REPLACEMENT (Refer to Figure 10). 1. Remove  light  mounting  screws.    Remove  trim bezel and seal (where used). 2. Pry light assembly from mounting recess in cab. 3. Turn bulb socket about one-eighth turn counterclockwise and remove socket (with bulb) from light assembly. Fig. 10 Clearance Light 1.  Light Assembly 2.  Bulb 3.  Socket CTS - 4088 Page 6