TM 5-3895-383-24 Check   the   following   parameters   if   the   travel   speed   is   not correct. 1. Pump efficiency. 2. Charge relief valve setting. 3. Check the main relief valve setting. 4. Make  sure  that  the  machine  is  in  the   HIGH   SPEED range. 5. Make   sure   that   the   linkage   rod   between   the   propel pumps is adjusted correctly. 6. Check  the  axle  propel  motor  for  the  correct  minimum displacement adjustment. Piston Pump Relief Valve (Axle Propel and Drum Propel) - Test and Adjust SMCS Code:  3203-025-PV; 3203-081-PV Table 8 Required Tools Part number Description Quantity 8T-0861 Pressure Gauge 1 60000 kPa (8700 psi) Personal injury or death can result from sudden, machine movement. Sudden  movement  of  the  machine  can  cause  injury  to persons on or near the machine. To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine. Escaping  fluid  under  pressure,  even  a  pinhole  size  leak, can  penetrate  body  tissue,  causing  serious  injury,  and possible death.  If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. Always  use  a  board  or  cardboard  when  checking  for  a leak. NOTICE Care  must  be  taken  to  ensure  that  fluids  are  contained during  performance  of  inspection,  maintenance,  testing, adjusting and repair of the product.  Be prepared to collect the   fluid   with   suitable   containers   before   opening   any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose  of  all  fluids  according  to  local  regulations  and mandates. NOTE: Follow  the  same  test  procedure  and  the  same adjustment procedure for the relief valves on the axle propel pump and the drum propel pump. Before   you   conduct   the   test   procedure   on   the   main   relief valves, the following steps must be followed: Place the propel control lever in NEUTRAL position. Place the machine in position against a solid, stationary object  such  as  a  loading  dock.    The  wheels  may  be blocked and the drum may be blocked instead of placing the machine against a stationary object. Make sure that the parking brake is applied. Illustration 63 Drum Dive Motor (1) Brake line. 1. Remove brake line (1) from the drum drive motor.  Plug the brake line and cap the fittings. 10-63