Troubleshooting transmission issues in construction equipment?

Jonathan Gillispe

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Hey everyone,

Has anyone here had experience troubleshooting transmission issues in excavators or bulldozers? I’m looking for a comprehensive guide or tips on identifying common transmission problems in these machines and how to fix them before they lead to bigger repairs. Any advice on what to check or how to approach it would be greatly appreciated!
 
Definitely been there. First thing I always check is fluid levels and condition, since low or dirty fluid causes a ton of issues. Then it’s all about listening for weird noises or lag in shifting—those can point you straight to clutch packs or solenoids acting up. A quick scan with diagnostic software can save you hours too!
 
For sure, fluid health is the first thing I check too. A slipping trans or delayed engagement can also be signs of worn clutch packs or faulty pressure sensors. If it’s electronic, don’t sleep on running diagnostics—those codes can point you right to the issue before you even pop the panel open.
 
Absolutely! Start with checking the transmission fluid level and quality because dirty or low fluid is the root of so many problems. Then listen for any odd noises or shifting delays that could hint at clutch pack wear or solenoid issues. Running a diagnostic scan is a huge time saver too, especially with electronic systems, it often points you right to the trouble before you even open anything up.
 
Yeah, I’ve run into a few transmission headaches on older dozers, fluid checks are always my starting point too. Had one case where just cleaning out a clogged filter fixed what felt like a major issue. I’ve also found that paying attention to small delays in gear shifts can save you from bigger breakdowns later. Anyone else use thermal imaging to spot hotspots in the transmission housing? It’s helped me catch trouble early a couple times.
 
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