Driver Controls and Instruments engine an determine the cause. See the vehicle service manual for repair procedures. Oil Pressure at Rated Speed psi (kPa) Mercedes-Benz MBE900 7 (50) min. 36 (250) min. Engine Model Oil Pressure at Idle Speed psi (kPa) Oil Pressure * IMPORTANT: If the warning system does not acti- vate when the ignition is turned on, repair the sys- tem to provide warning protection for oil pressure, coolant temperature, and the brake system. Caterpillar C-10 10 to 20 (69 to 138) 30 to 45 (207 to 310) Caterpillar C-12 10 (69) min. 45 (310) min. Cummins M11 10 (69) min. 35 to 45 (241 to 310) Cummins B and C Series 10 (69) min. 30 (207) min.
Kysor Vehicle Protection System, Optional The Kysor system is an electronically-controlled warning and engine shutdown system. See Fig. 3.24 . * Oil pressures are given with the engine at operating temperature. With the engine cold, oil pressures may be higher. Table 3.2, Oil Pressure Detroit Diesel 12 (83) min. 50 (345) min. Engine Functions The system monitors engine coolant temperature, cool- ant level, and oil pressure. Other optional warning or indicator lights may include: intake air preheater, oil level, automatic transmission fluid temperature, low coolant level, do-not-shift, check transmission, range inhibit, intake-air restriction, check engine, engine protection.
If the engine overheats, a warning light illumi- nates and a buzzer sounds. The temperature that triggers the warning light and buzzer varies with engine type and is programmed into the system at the factory. If the temperature continues to rise to critical levels, the engine protection light illumi- nates and the engine will shut down. When the ignition is turned on, oil- and brake-system warnings (as equipped) activate until the engine starts and minimum pressures are exceeded.
If the low-oil warning light or brake system warning light remains lit after running the engine for 15 seconds, shut down the If the coolant level drops below a sensor in the cooling system, the low coolant level light illumi- nates and a buzzer sounds. After 30 seconds, the system will shut down the engine. 3.28