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BAUER25
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- PRODUCT DETAILS
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Main technical parameters 序号 名 称 单位 参 数 值 No. Description Unit Parameter value 1 大钻孔直径 mm 1900 Max. drilling diameter 2 大钻孔深度
Max. drilling depth
m 标配59.2 (机锁4节) Standard configuration， 67 (4-section machine-locking type drill rod) 或43 (机锁3节) Optional configuration 43 (3-section machine-locking type drill rod) 3 整机重量（标准配置下，不含钻具） t 81 Weight of overall unit (standard configuration, excluding drilling tool) 4 发动机
Engine
型号 / CAT-C7 Model 额定功率 kW 301 Rated power 5 动力头 动力头的大扭矩 kN.m 237 Unit head Max. torque 6 主卷扬 主卷扬提升力 kN 200 Main winch Lifting force
BAUER25
Product classification
Keywords
PROVIDE HIGH-QUALITY SECOND-HAND CONSTRUCTION MACHINERY AND EQUIPMENT TO CUSTOMERS AROUND THE WORLD
Annual Sales Volume
Selling to more than 60 countries
Cumulative service customers
FAQ
A common fault troubleshooting for engine failure to start
Rotary Drilling Rig Engine Failure to Start (Fuel Pump Fault)
I. Basic Case Information
- Product: Rotary Drilling Rig
- Model: XCMG XR220D
- Working Hours: 3400
II. Fault Phenomenon
The engine fails to start.
III. Fault Analysis
- The starting motor circuit and key switch circuit were inspected and found to be normal.
- The diesel oil circuit from the fuel tank to the engine was checked for blockage, along with the fuel filter element; both were normal.
IV. Troubleshooting Process
- The oil inlet pipe of the fuel pump was removed, and a large oil output was observed. The hard pipe on the engine common rail was removed for inspection, and a small oil output was found.
- The high-pressure fuel pump was disassembled and cleaned, revealing severe internal wear and impurities such as oil sludge.
- The worn eccentric shaft inside the pump was replaced, and internal impurities were cleaned; the engine started normally afterward.
V. Fault Cause (Conclusion)
Severe internal wear of the fuel pump resulted in failure to build up sufficient fuel pressure, which could not meet the fuel supply pressure required for normal engine start.It is recommended that the customer use higher-quality diesel, replace the filter element in a timely manner, and clean the fuel tank regularly.
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