TM5-2430-200-10 75 Operation Section Operating Techniques The  work  lights  may  impair  the  vision  of  drivers  of approaching   vehicles,   which   may   cause   injury   or   fatal accidents. Therefore, when traveling on   public   roads   or   accesses,   ensure   that   the   work   light    switch    is    in    the    OFF    position.    Refer    to   “Operation   Section,   Monitoring   Systems   and   Cab Features, Work Light Switch” in this manual. Travel  at  moderate  speeds.  Do  not  exceed  the  speed limit on public roads. NOTE: The maximum travel speed of the machine is   48 kph (30 mph). Maximum attainable speed is dependent on ambient temperature, oil level, and oil weight. The fluids must be at normal operating temperature, and the machine must be operated on   level terrain to reach 48 kph (30 mph). Reduce     travel     speed     if     directional     stability     is noticeably   diminished.   Always   use   the   seat   belt   when    operating    the    machine.    Loss    of    machine   control can result in injury or death. Back Ripping General Ripping Technique When the back rippers are used, the machine should   be operated in the EARTHMOVING mode with the transmission in FIRST SPEED REVERSE. If additional production is required, use additional shanks instead   of increasing the ripping speed. NOTICE When ripping is performed, the machine  must be driven in a straight line. Also, all four rippers must be used at the same time or rippers must be used in symmetrical pairs. NOTICE Do not turn the machine while the ripper shanks are in the ground. The shanks may fail if they are twisted. Use the accelerator pedal to match the drawbar pull   to the underfoot conditions. Do not allow the drive belt   to slip. Rip the ground as deep as the underfoot conditions   will allow. Partial depth ripping may be required.   Remove the material in natural layers. The depth and width of the pass control the sizing of the ripped material. The back rippers are not intended for use in rock or in deep ripping applications. Only use the ripper shanks which are specified in Parts Manual, Deployable   Universal Combat Earthmover (DEUCE). Ripping Technique for Packed Soil,   Hardpan, or Clay Follow the recommendations given in “General Ripping Technique,” above. Use the greatest possible number of shanks to break   the material to the desired size. The number of shanks used should not cause the machine to stall or hang   up. NOTE: Four shanks usually work well in these   materials. Operation in High Ambient Temperatures (Above 38⁰C [100⁰F1) In high ambient temperatures, the gauges must be checked more often. If a system is overheating,   reduce the load, and allow the system to cool to   normal operating temperature. NOTICE To prevent the fuel from overheating, the fuel level should be  maintained  above  one-half of a tank. Overheated fuel can  cause  reduced  power  and  possibly  damage  the  fuel system. The operator’s preventative maintenance checks and services should be performed more often than normal. Refer to “Appendix A, Operator’s Preventive Maintenance Checks and Services (OPMCS) - DEUCE.” Contact Unit Maintenance for assistance in determining new maintenance intervals.