Komatsu — C2. Circuit Breaker Tripped

OM3237 02/10 Operation - Section 32 Operator Cab and Controls Page 32-19 C1. Low Accumulator Precharge Pressure The low accumulator precharge warning light, if illuminated, indi- cates low nitrogen precharge for the steering accumulator(s). To check for proper accumulator nitrogen precharge, the engine must be stopped and the hydrau- lic system completely bled down. Turn the key switch to the RUN position. The warning light will not illuminate if the accumulators are prop- erly charged.

The warning light will flash if the nitro- gen precharge within the accumulator(s) is below 7 585 ± 310 kPa (1,100 ± 45 psi) This red indicator light indicates a malfunction within the hydrau- lic brake circuit. If this light illu- minates and the buzzer sounds, stop the truck, shift to PARK, and turn the engine off. Notify maintenance personnel. E1. Low Brake Pressure NOTE: Adequate hydraulic fluid is stored to allow the operator to safely stop the truck. A2. Low Hydraulic Tank Level This warning light indicates the oil level in the hydraulic tank is below recommended level. Dam- age to hydraulic pumps may occur if operation continues. Stop the truck and turn the engine off.

Notify maintenance personnel immedi- ately. If the low accumulator precharge warning light flashes, notify maintenance personnel immedi- ately. Do not attempt further operation until the accumulators have been recharged with nitro- gen. Refer to the shop manual for proper charg- ing instructions. If nitrogen precharge pressure is low, sufficient oil for emergency steering may not be available. B2. Automatic Lubrication System Pressure This amber light will illuminate if the automatic lubrication sys- tem fails to reach 13 790 kPa (2,000 psi) at the junction block located on the rear axle hous- ing within a specified time after the lube timer initiates a cycle of grease.

To turn the light off, turn key switch OFF, then back to ON again. Notify maintenance per- sonnel at earliest opportunity after light comes on. D1. Electric System Fault The electric system fault warning light will flash on and off when a malfunction occurs in the electri- cal system. The warning horn will also sound intermittently. When the light comes ON, the propul- sion will be dropped automatically. Reset by pushing the override but- ton. If the fault repeats again, stop the truck and report the problem to maintenance personnel. C2. Circuit Breaker Tripped This amber light will illuminate if any of the circuit breakers in the relay circuit control boards are tripped.

The relay circuit boards are located in the electrical con- trol cabinet. NOTE: STATEX III records the number of faults/ events. When a predetermined number of faults/ events are recorded within a given time frame, the operator will not be able to reset the fault/event by using the override switch. If this occurs, notify main- tenance personnel immediately. NOTE: Additional circuit breakers are located in the operator cab behind the center console. However, tripping of these circuit breakers will not activate this light.