Several common reasons for high temperature of the #small rotary drilling machine# engine, do not blindly repair it! The following editor of Shandong Liqiang Machinery Co., Ltd. shares with you the following common reasons for high temperature of the engine:
1. Radiator Surface Blockage#drilling machine china#
Overheating is often caused by blockage on the radiator surface. To increase the heat dissipation area, radiators have fins installed between the capillary tubes. The gaps between these fins are relatively small and easily clogged by debris such as willow catkins, dirt, and dead insects.
Once clogged, ventilation is insufficient, cooling capacity is sharply reduced, and the engine coolant temperature rises excessively. A thorough radiator cleaning will ensure optimal operation throughout the summer.
2. Internal Radiator Blockage
Modern small rotary drilling rigs rarely use water as coolant, so internal radiator blockage is less common. However, some owners still prefer to use water, which contains a lot of minerals. This easily deposits scale inside the radiator, affecting heat dissipation and causing high temperatures.
It is recommended to check the radiator for scale blockage. If there is a lot of scale, take it to a specialized radiator repair shop for cleaning and unblocking. 3. Fan Clutch Failure
The clutch fan's function is well known: it reduces fan speed when coolant temperature is low, reducing energy consumption and thus saving fuel. However, if it malfunctions, maintaining a low speed even when coolant temperature is high will inevitably cause engine overheating.
If your small rotary drilling rig experiences overheating and other components are fine, consider replacing the fan clutch.
4. Insufficient Fan Belt Tension
High engine temperatures caused by insufficient fan belt tension are easy to identify. If you feel noticeable slack when pressing it, or if the accelerator belt slips and makes a squeaking sound, these signs indicate insufficient belt tension.
Insufficient belt tension causes the fan and water pump to rotate too slowly, significantly reducing heat dissipation capacity, making excessive engine temperatures inevitable.#drilling machine china#
5. Ignition Timing Error
In fact, with the advent of electronic control, engine overheating caused by ignition timing errors is largely eliminated. However, on older engines with mechanical pumps, overheating due to timing errors still occurs. If your small rotary drilling rig uses a mechanical pump and experiences high temperatures, it's recommended to check whether the ignition timing is within the normal range.
6. High Exhaust Back Pressure
Many people may not know that high engine exhaust back pressure can also cause high temperatures. There are two common causes of high exhaust back pressure: 1. A poorly returned exhaust brake butterfly valve, resulting in restricted exhaust flow; 2. A blockage inside the muffler or SCR catalyst, causing excessive exhaust back pressure. Both of these factors can cause excessive engine temperatures, reducing power and increasing fuel consumption.
7. Thermostat Fault
It's common knowledge that the thermostat is responsible for controlling the engine coolant temperature within a reasonable range, neither too low nor too high. If the thermostat is faulty and fails to open when the temperature exceeds the opening temperature, or opens only slightly, it can cause the engine to overheat.
If your small rotary drilling rig experiences high engine temperatures, be sure to check the thermostat for proper operation. However, never remove the thermostat, as this can cause the engine temperature to run out of control, resulting in high fuel consumption and increased wear. In short, there are many reasons that cause high temperature, and these are just a few of the more common ones. In addition to the reasons of the equipment itself, improper operation can also cause engine high temperature. Therefore, when encountering such problems, it is necessary to conduct a systematic inspection and not blindly carry out repairs, because the small rotary drilling rig is an integral whole, and problems in any link will cause different or similar fault manifestations.#drilling machine china#
