TRUCK SERVICE MANUAL TM 5-4210-230-14&P-1 BODIES AND CABS REMOVAL AND INSTALLATION 1. Remove  the  two  reservoir-to-cowl  mounting  bolts  and lift   complete   pump,   motor   and   reservoir   from   cowl. (Reservoir bottom bolt removal is not required.) 2. Separate wiring connector for instrument panel switch- to-motor   wire   and   motor-to-ground   wire   from   pump motor. 3. Disconnect    pump-to-wiper    nozzle    hose    from    pump outlet fitting. 4. No further disassembly is required.  Do not attempt to remove pump motor from reservoir. Installation   of   windshield   washer   is   the   reverse   of removal  procedure.    Test  the  operation  of  unit  and  check  for leaks after installing. TROUBLE SHOOTING IMPORTANT Be  sure  an  ample  supply  of  IH  No.    996726-R2  windshield  washer  solvent  is  maintained  in  reservoir  to  insure satisfactory operation of windshield washer. PROBLEM PROBABLE CAUSE SOLUTION Pump will not operate. 1.  No voltage to pump motor. 1.  Check for open circuit or blown fuse. 2.  Defective switch. 2.  Replace switch. 3.  Defective motor. 3.  Replace pump, motor and reservoir assembly. Pump operates but 1.  Hoses loose, kinked or 1.  Reinstall or replace hose. pressure is weak. damaged. 2.  Nozzles plugged or dirt 2.  Clean nozzles and service in reservoir. reservoir as required. 3.  Defective motor or pump. 3.  Replace pump, motor and reservoir assembly. Pump operates but no washer 1.  No solution in reservoir. 1.  Fill reservoir. solution delivered. 2.  Hoses loose, kinked or 2.  Reinstall or replace hoses. damaged. 3.  Nozzles plugged or dirt 3.  Clean nozzles or reservoir in reservoir. as required. 4.  Solution frozen. 4.  Thaw out system and re- place washer solvent. 5.  Defective pump. 5.  Replace pump, motor and reservoir assembly. CTS-2732  Page 2 PRINTED IN UNITED STATES OF AMERICA