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@tatexpressinc "Paccar MX13 Common Issues"
TikTok Link @tatexpressinc 2024-10-27T15:44Z 12.9K followers, 95.5K engagements

"🧪🚛 Combustion Test Performed MX-13 Engine Diagnostic 🚛🧪 In this video our specialist tech performed a combustion leak test on a PACCAR MX-13 engine after the customer reported a coolant loss with no visible leaks. To locate the source several tests were carried out: ✅ Pressurized cooling-system test no visible external leaks detected. ✅ EGR cooler inspection found completely dry. ✅ Air compressor check no signs of coolant contamination. ✅ Combustion gas test no combustion gases were detected in the coolant. After eliminating every other possible source the results pointed to a failed"
TikTok Link @tatexpressinc 2025-10-13T22:02Z 12.9K followers, 1747 engagements

"⚙🔧 Shift Controller Assembly Replacement Work in Progress 🔧⚙ Our specialist tech is currently working on replacing the Shift Controller Assembly on this Freightliner truck after confirming internal failure during diagnostics. The truck came in with shifting issues between 9th 10th and 11th gear and all clutch and transmission tests were completed with no faults found leading us to the true source of the problem. 💡 Whats happening here: The shift controller assembly is responsible for communicating with the transmission to coordinate smooth gear engagement. When it fails internally or sends"
TikTok Link @tatexpressinc 2025-10-14T16:22Z 12.8K followers, 3635 engagements

"⚠💨 Cummins 6.7L EGR Codes Caused by Intake Tube Leak (EGR Checked Clean) 🚛🛠 This Cummins 6.7L came in with EGR fault codes but the issue wasnt the EGR valve itself. 🔎 Our tech found a large hole in the inlet tube feeding the air compressor which ties into the intake system. This unmetered air tricked the ECM and caused false EGR codes. 🧹 To confirm we also inspected the EGR components for soot buildup they were clean and free of restrictions. ✅ After replacing the damaged inlet tube the system was tested and the codes cleared. 👉 This repair shows why diagnostics matter: EGR codes dont"
TikTok Link @tatexpressinc 2025-08-30T16:28Z 12.9K followers, 3321 engagements

"🧰⚙ Valve Adjustment After Rocker Box Reseal DD15 Engine ⚙🧰 In this video our specialist tech is performing a valve adjustment on this DD15 engine after completing a rocker box reseal. During inspection several intake and exhaust valves were found tight which can affect performance fuel efficiency and long-term engine reliability. 💡 Why valve adjustment matters (especially after resealing): When the rocker box is resealed its the perfect opportunity to inspect and adjust valve clearance. Over time valves can tighten from heat expansion wear and vibration preventing them from seating"
TikTok Link @tatexpressinc 2025-10-16T18:23Z 12.9K followers, 4485 engagements