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What is the problem with the second warranty of the excavator?

2025-10-27 09:05:30 mechanical

What is the problem with the second warranty of the excavator?

Recently, discussions on construction machinery maintenance have continued to rise across the Internet, especially topics related to "excavator maintenance" have become the focus of the industry. This article will combine the popular data of the past 10 days to conduct a structured analysis of the core issues of excavator maintenance and provide practical solutions.

1. Hot data on the entire network: trends in excavator maintenance

What is the problem with the second warranty of the excavator?

keywordsSearch volume (daily average)year-on-year growthRelated hot spots
Excavator warranty2,800+45%Maintenance interval/filter replacement
Hydraulic oil replacement1,500+32%Misunderstandings in oil selection
Engine carbon deposits3,200+68%Fuel quality controversy

2. What is excavator warranty?

Second guarantee refers to the second comprehensive maintenance after 500 hours of operation of the excavator, which mainly includes:

1.engine system: Replace engine oil, engine filter, air filter

2.Hydraulic system: Replace hydraulic oil and hydraulic oil filter element

3.Structural component inspection: Track tension, slewing bearing lubrication

3. Analysis of current hot issues

Problem classificationSpecific performanceProportion
Oil selectionMisuse of low grade hydraulic oil37%
Filter element replacementFailure to replace the triple filter on time28%
Operation errorCold start direct operation19%

4. Solution Guide

1. Standardized management of oil products

• Hydraulic oil must use ISO VG46 and above grades

• Do not mix different brands of engine oil

2. Key maintenance time points

projectstandard periodlimit value
oil filter element500 hours600 hours
Hydraulic oil2000 hours2500 hours

5. Suggestions from industry experts

According to the latest technical bulletin of the China Construction Machinery Association:

1. After the second guarantee, a 10-minute no-load test run should be carried out

2. It is recommended to check the ECU fault code simultaneously

3. Antifreeze needs to be replaced in advance during winter maintenance

6. User practical cases

Shandong user feedback: After strictly implementing the second guarantee standard, the equipment failure rate dropped by 62%, and the annual maintenance cost was reduced by 24,000 yuan.

To sum up, the core of the excavator’s secondary guarantee lies inStandardized operationsandpreventive maintenance. With the implementation of National IV emission standards, maintenance requirements will be further improved. It is recommended that aircraft owners establish a complete maintenance file system.

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