TM 5-3825-226-24 location of the components that are worn, or not working correctly.  Not all probable reasons have an application to all machines. PROBLEM:  Setting of the relief valve is higher or lower than given in Test 1.  Percent of flow loss for Tests 4 and 5 is 15% to 50%. PROBABLE REASON: Setting for relief valve is not correct and leakage is too high. RECOMMENDATION FOR ACTION: Make   adjustments   to   the   relief   valve   to   get   the correct   pressure.      See   the   Service   Manual   for   the machine  under  test.    Make  a  test  for  leakage  in  the following problems. PROBLEM: Percent of flow loss for Tests 4 and 5 is 15% or MORE. PROBABLE REASON: A. Bad pump. B. Leakage in the relief valve. C. Leakage  in  one  or  both  of  the  piston  seals  for the steering cylinders. D. Wear  or  damage  in  the  valve  body  or  valve spool. E. Hand metering pump, unloading valve, selector valve  or  diverter  valve  is  worn  or  not  working correctly. RECOMMENDATION FOR ACTION: A. Do the Pump Test. B. If the extra percent of flow loss is not caused by a bad pump, the problem is in the control valve or cylinders.  Do the Blocked Cylinder Tests 26, 27  and  28.    If  the  leakage  is  still  too  high,  the problem   is   in   the   control   valve.   Inspect   its components. PROBLEM:  Percent of flow loss for Test 4 is 15% or MORE; for Test 5 it is 0 to 15%. PROBABLE REASON: A. Wear  or  damage  in  the  valve  body  or  valve spool. B. Adjustment of follow-up linkage is not correct. C. Unloading  valve  or  relief  valve  does  not  move freely. RECOMMENDATION FOR ACTION: The   problem   is   in   the   control   valve   or   linkage. Inspect these components. PROBLEM:  Percent of flow loss for Test 5 is 15% or MORE; for Test 4 it is 0 to 15%. PROBABLE REASON: A. Wear  or  damage  in  the  valve  body  or  valve spool. B. Adjustment of follow-up linkage is not correct. C. Unloading  valve  or  relief  valve  does  not  move freely. RECOMMENDATION FOR ACTION: The   problem   is   in   the   control   valve   or   linkage. Inspect these components. PUMP TEST (CHART B) This   test   is   used   to   find   the   efficiency   of   the hydraulic  pump.    Install  a  Blocking  Plate  Assembly  in the  return  line  on  the  control  valve.    This  prevents  oil from going through the system.  All pump flow now goes through the flow meter. NOTE:    Make    sure    the    brake    accumulator    is    not operating while taking test data. WARNING: Open the manual load valve on the   flow   meter   fully   before   starting   the diesel  engine.    The  relief  valve  is  not  part of the circuit for the Pump Test.  If the pressure gets too high, it is possible to cause injury to personnel or damage to equipment. Test 14: Pump Flow at Low Pressure (test rpm) 1. Open the manual load valve fully. 2. Start the diesel engine. 3. Run the engine at test r  .h. 4. Slowly  close  the  manual  load  valve  to  get  100 psi pressure. 5. Write  down  the  oil  temperature  and  flow  rate (gpm). 2-118