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Fault analysis of traveling device of hydraulic excavators

What problems will happen with your motor, LKC here to answer you.


Item Problem Possible Cause Solution
1 Oil leaking from gearbox cover   { Distorted gearbox cover caused by physical damage Replace the cover and cover o-ring
Pressure build-up in gearbox  Contact the maintenance Centre
2 Oil leaking from the ring gear Damaged or worn floating (lifetime) seal Replace the floating seal
3 Gearbox oil level too high Worn oil seal or bearings caused by Hydraulic oil leaking from the motor into the gearbox
Replace oil seal or bearings
4 Excessive noise   { Insufficient oil in gearbox Gearbox / motor requires overhaul
Worn bearings or gears Replace drive with new or reconditioned unit.
Impurity disassemble the motor and gearbox
5 Gearbox casing/ring cover is hot    { No oil Add oil
Worn Bearings Gearbox requires overhaul
6 difficult climbing     { Lack of power Check hydraulic pressure at the travel motor
 Excessively worn of Travel motor Repair or replace travel motor
 Excessively worn of Gearbox Repair or replace gearbox
7 Motor works but gearbox fails to drive   { Motor shaft  broken Replace both motor shaft and 1st drive gear/sun gear 
Broken drive shaft  Replace drive shaft 
1st drive gear/sun gear broken Replace1st drive gear/sun gear 
8 Motor idling   { Wore of friction plate Replace friction plate
Wore of cylinder block Replace cylinder block
Broken motor shaft Replace motor shaft

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About LKC

Qingdao LKC Hydraulic Co. ,Ltd , founded in Qingdao national high-tech industrial development zone in 2006, is mainly engaged in R&D, manufacture, sales and service of hydraulic motor of  construction machinery ,mining machinery and pilling machinery. The company has independent import and export rights, and has been the sales agent of many international first-line brand product,.It owns six proprietary sales companies and three overseas offices(India, Vietnam and Thailand).It has been covering the entire southeast Asia area and has been the most important service provider of after-sales market in Asia.