CAT 336D excavator alarm, insufficient oil pressure, unable to start after stalling. What’s going on
Caterpillar 336D excavator alarm oil pressure electrical system malfunction
1. The battery is low, so it is necessary to charge the battery in a timely manner, check the battery liquid level, and replenish the electrolyte to the specified height in a timely manner. If the battery is found to be aging and charging poorly, it should be replaced, and attention should be paid to the daily maintenance of the battery, so as not to keep it in a state of low power frequently.
2. Repair or replace the starter motor due to malfunction.
3. Repair or replace the generator due to malfunction.
4. Check the circuit for faults and repair it.
Caterpillar 336D used excavator engine oil circuit failure
-
Under the suction effect of the fuel transfer pump or fuel injection pump, the fuel in the low-pressure oil circuit is sent from the fuel tank to the high-pressure pump through the low-pressure oil circuit. If the low-pressure oil circuit is not tightly sealed or the oil level in the fuel tank is too low, and the vehicle is parked and driven tilted, air will take the opportunity to enter the oil circuit; If the temperature is high and the fuel evaporates, it will also form air resistance in the low-pressure oil circuit, causing unstable engine operation, automatic shutdown or engine failure to start.
-
The common parts of oil circuit blockage and cold oil circuit blockage include the oil suction pipe, filter screen, diesel filter, fuel tank cover vent hole, etc. inside the fuel tank. The main problem causing oil circuit blockage is the injection of diesel that does not meet the standards or the mixing of impurities during refueling.
