How to eliminate the cause of vibration failure of 3126B diesel engine for Caterpillar excavator 

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1 Causes of vibration failure

 (1) The shock absorber or bolt is damaged. 

 (2) The diesel engine bracket is loose or broken. 

 (3) The drive accessory is faulty. 

 (4) The diesel engine has poor combustion or rough operation. 

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 2. Troubleshooting 

 (1) Check whether the shock absorber is damaged. If necessary, install new shock absorbers. Check the mounting bolts for damage or wear. Replace damaged bolts. 

 (2) Run the diesel engine within the allowable speed range, and check the supports and brackets to see if they are loose or cracked. Tighten all mounting bolts. If necessary, install new parts. 

(3) Check the alignment and balance of the drive attachment. 

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 (4) To troubleshoot the diesel engine misfire or unstable operation, please refer to Section 8 of this section.