Operation - Section 3 OM3017.3 Page 3-26 Instrument Panel and Indicator Lights (42, Figure 3-8) WARNING DECAL (44, Figure 3-8) LOW ACCUMULATOR PRECHARGE A warning is mounted at the bottom of the instrument panel to the right of operator and beneath the warning indicator light panel. Truck should not be operated with any red warning lights on. The low accumulator precharge warning light, if illumi- nated, indicates low nitrogen precharge for the steer- ing accumulator(s). To check for proper accumulator nitrogen precharge, engine must be stopped and hy- draulic system completely bled down; then turn keyswitch to "Run" position. Warning light will NOT illuminate if system is properly charged.
The warning light will flash if the nitrogen precharge within the accumulator(s) is below 975 psi (6.7 MPa). If any of the red warning lights, (43) through (58), are illuminated, the truck should be safely stopped, engine shut down, and maintenance notified. If low accumulator precharge warning light flashes, notify maintenance personnel. Do not at- tempt further operation until the accumulators have been recharged with nitrogen to 1050 psi (7.24 MPa). Sufficient energy for emergency steering may not be available, if system is not properly charged.
(43, Figure 3-8) LOW STEERING PRESSURE If the steering system pressure drops to 1850 psi (12.7 MPa) the steering pressure warning light will come on and a buzzer will sound. NOTE: After turning keyswitch "Off", engine must be allowed to completely stop, and hydraulic system must have time to bleed down completely (approximately 90 seconds) before turning keyswitch "On" and checking for Steering Accumulator Nitrogen Precharge. A false indication of Low Steering Accumulator Nitrogen Pre- charge may result if these instructions are not fol- lowed . If the low steering warning light continues to glow and the alarm continues to sound, low steering pressure is indicated.
The remaining pressure in the accumulators allows the operator to control the truck to a stop. Do not attempt further operation until the malfunc- tion is located and corrected. (45, Figure 3-8) HIGH HYDRAULIC OIL TEMPERATURE (OPTIONAL) This warning light indicates high oil temperature in the hydraulic tank. Truck should not be operated because hydraulic components may be damaged. Light turns on at 225 o F (107 o C); notify maintenance personnel immediately. (46, Figure 3-8) LOW HYDRAULIC TANK LEVEL (OPTIONAL) This warning light indicates the oil level in the hydraulic tank is below recommended level. Damage to hydrau- lic pumps may occur if operation continues.
Shut truck down and notify maintenance personnel immediately.