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Machine Test - TM-5-3895-383-24_578
Vibratory System ON

TM-5-3895-383-24
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TM 5-3895-383-24 NOTICE To  avoid  damage  to  the  vibratory  system  during  testing, always perform the testing with the vibratory drum on top of   tires   or   on   loose   dirt.      Tires   will   simulate   a   non- compacted soil condition. Never  operate  the  vibratory  system  when  the  machine  is on concrete. NOTICE If a testing time longer than three (3) minutes is required, rotate   the   drum   periodically   in   order   to   lubricate   the eccentric weight shaft bearings. NOTE: The  hydraulic  oil  temperature  should  be  at  least 38° C (100° F). NOTE: Two   separate   charge   pressures   are   measured during    this    test.        The    following    procedure measures  the  charge  pressure  after  the  charge filter, when the propel control lever is in the STOP position  and  when  the  vibratory  system  is  OFF. The    second    pressure    measures    the    charge pressure  after  the  charge  filter,  when  the  propel control lever is in the STOP position and when the vibratory system is ON. Vibratory System OFF 1. Stop the machine and apply the parking brake. Illustration 44 Left Side of Machine (1) Charge pressure test port.  (2) Charge filter. 2. Install   a   4134   kPa   (600   psi)   pressure   gauge   at   the charge   pressure   test   port   (1)   which   is   located   after vibratory charge filter (2). 3. Install the multitach in order to measure the engine rpm. 4. Install  4C-6500  Digital  Thermometer  into  the  hydraulic oil tank. 5. Start  the  machine  and  run  the  machine  at  high  idle (2350  ±  50  RPM)  until  the  hydraulic  oil  temperature reaches 38C (100F). 6. Read  the  charge  pressure  at  pressure   test   port   (1). Charge pressure (NEUTRAL) should be 2950 ± 150 kPa (428 ± 22 psi). Illustration 45 Vibratory Pump (3) Screw For The Adjustment Of The Charge Pressure. 7. To   increase   the   charge   pressure   in   NEUTRAL,   add shims to the relief valve.  Remove shims from the relief valve in order to decrease the charge pressure. NOTE: Determine the condition of the charge filter before any   adjustments   are   made.      This   affects   the charge  pressure.    Nominal  stack  height  of  the shims for the charge relief valve is 3.04 mm (.120 inch). 8. Once Step 7 is complete, tighten the locknut to a torque of 50 ± 5 N m (37 ± 4 lb-ft). 9. Recheck   the   charge   pressure.      Once   the   vibratory charge    pressure    is    correct,    proceed    to    "Vibratory System ON". 11-46







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