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Precautions after replacing the new cat 320d hydraulic pump
(1) Pay attention to the discovery of abnormal phenomena at any time
Abnormal sounds, vibrations, or abnormal signals of the monitoring system must have their reasons. When an abnormal phenomenon is found, immediately find the circuit diagram, follow the diagram to find out, and carefully observe whether the abnormal phenomenon is caused by a temporary error. Assess the need for parking. For example, pressure, load, temperature, time, start-up, and stop all include the reasons that may cause abnormal phenomena. Usually, it should be analyzed and discussed item by item.
Best Price Caterpillar Cat 320d Hydraulic Pump For Sale
| Name | Best Price Caterpillar Cat 320d Hydraulic Pump For Sale |
| Product Number | All Part Numbers You Need |
| Condition | Original Brand New |
| MOQ | 1 Piece |
| Payment | T/T, Western Union, Paypal, etc |
| Standard or Nonstandard | Standard |
| Delivery Time | In 3 Days |
| Packing | Wooden Box |
| Warranty | 6 Months |
| Transport | By sea/air/express (DHL/FEDEX/TNT/UPS/EMS/City-line) |
(2) Do not apply load immediately after the hydraulic pump is started
After the hydraulic pump is started, it must be idling without load for a period of time (about 10 minutes to 30 minutes), especially when the temperature is very low, it must go through the warm-up process to make the hydraulic circuit circulate normally and add preload, and confirm the operation status.
(3) Observe the change of oil temperature
Pay attention to check the change of the highest and lowest oil temperature, and find out the relationship between the oil temperature and the external ambient temperature, so as to know whether the capacity of the cooler and the capacity of the oil storage tank is compatible with the surrounding conditions and the conditions of use, and the troubleshooting of the cooling system is also possible. Traces to follow.
(4) Pay attention to the noise of the hydraulic pump
The new hydraulic pump has less initial wear and is easily affected by air bubbles and dust. Poor lubrication at high temperatures or overloaded operating conditions will cause adverse consequences and cause abnormal effects on the hydraulic pump.
(5) Pay attention to check the display value of the counter class
Observe the display value of the pressure gauge of the hydraulic circuit, the vibration status and stability of the pressure switch light signal at any time, so as to find out whether the hydraulic circuit is functioning properly as soon as possible.
(6) Pay attention to observe the action of the machine (for the modified pump)
Improper design of the hydraulic circuit or poor manufacturing of components are not easy to find in the initial use stage, so special attention should be paid to the action state that appears under various operating conditions.
(7) Pay attention to the adjustment in each valve
Fully understand the use of pressure control valve, flow control valve and directional control valve, pay special attention to the adjustment range and limit, otherwise adjustment errors will not only damage the machine, but also pose a threat to safety.
(8) Check the status of the filter
The filter in the loop should be taken out and cleaned regularly, and the state of the filter screen and the dirt adsorbed on the net should be checked, and the quality, quantity and size should be analyzed, so that the degree of pollution in the loop can be observed, and even the source of the pollution can be inferred accordingly.
(9) Regularly check the change of hydraulic oil
Check and analyze the deterioration, discoloration and pollution of hydraulic oil every one or two months to ensure the normal operation of the hydraulic transmission medium.
(10) Pay attention to the leakage of the piping part
Whether the piping of the hydraulic device is good or not can be seen after running for a period of time, check whether there is oil leakage and whether the piping is loose.
(11) Pay attention to the operating conditions within three months of the new machine running
A Carter CAT320 excavator is slow and weak in excavation; when the boom or stick is extended to the bottom, the engine is seriously choked.
Excavator slow action and digging power failure and maintenance steps:
1. The pilot oil pressure should be checked first, and the measured pressure is 3.9MPA, which is normal;
2. Then check the pilot oil circuit and check the proportional solenoid valve. Clamp the DC clamp meter (set to mA gear) on the single wire of the proportional solenoid valve, set the mode switch to heavy load, start the engine, and perform actions, the clamp meter has no current indication.
3. Unplug the plug, turn on the key switch, and measure the input terminal voltage of about 24V, which is normal; the resistance of the proportional solenoid valve terminal is ∞, indicating that the proportional solenoid valve coil is open circuit.
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Sales Manager：Liam Cheng Wechat/Whatsapp:+8616653175111
