TM 10-3930-671-24 Operational Tests-Test Drive NOTE It is recommended that these tests be conducted with a rated capacity load, if possible. BUCKLE-UP - Always wear the seat belt when operating a lift truck. 1. Check  all  around  to  be  sure  that  your  intended path    of    travel    is    clear    of    obstructions    and pedestrians. 2. Test  the  truck  for  general  correct  operation  and drive  train  function  by  driving  truck  in  both  the forward  and  reverse  directions  first  in  a  straight line and then, slowly, through a series of full right and left turns. 3. Test service brake operation. Apply and release the brakes several times before driving the truck. Note any change in pedal height each time pedal is   depressed.   Changes   in   pedal   height   could indicate  air  in  the  system  or  a  fluid  leak.  Check the    brakes    while    driving    to    ensure    proper operation. 4. Test   transmission   operation.   Drive   at   various speeds and operating conditions in both FORWARD    and    REVERSE.    Listen    for    any unusual drive train or other running noises, such as wheel bearing noise, vibration, etc. 5. When you have competed the operational tests, park    and    leave    truck    according    to    standard shutdown procedures. 6. Make a record of all maintenance and operating problems you find. Lubrication, Fluids, & Filters Check   fluid   levels   and   other   components   within   the engine compartment Engine Cooling System Do not remove the radiator cap when the radiator is  hot. Steam from the radiator can cause severe burns.  Never remove  the  radiator  cap  while  the  engine  is    running. Stop the engine and wait until it has cooled.  Even then, use   extreme   care   when   removing   the   cap   from   the radiator. It is good safety practice to use a shop cloth to cover  the  radiator  cap  while  it  is  being  removed.  Wrap the  cloth  around  the  cap  and  turn  it  slowly  to  the  first stop. Step back while  the  pressure  is  released  from  the cooling system. When you are sure all the pressure has been  released,  press  down  on  the  cap  with  the  cloth  in place,  turn  it  and  remove  it.  Stand  clear  of  the  radiator opening;  hot  coolant  may  splash  out.  Failure  to  follow these  instructions  could  result  in  serious  personal  injury from hot coolant or steam blowout and/or damage to the cooling system or engine. NOTE Remove cap only when the engine is cold. When  servicing  the  engine  coolant  or  checking  coolant level by removing the radiator cap: a) Turn     the     cap     slowly     to     release     any pressure that may be in the radiator. b) Push    the    cap    fully    down    and    turn    to release and remove the cap. F-49