A technician detects tiny rod leaks on a backhoe. He installs a new seal kit, then restores the machine to service. A routine service takes a couple of hours. In 2 weeks the engine starts crying again. This time, the fluid is gritty and dark.
The rod is visible with a score line running along the entire length of its stroke zone, and the bore of the gland displays circular scratching that wasn't present before. What began as a normal sealing job has now become an entire cylinder rebuild. The seal was not the issue. The root of the issue was not recognized, which exacerbated both the damage as well as the repair costs.
Read more: https://whyps.com/4-simple-mistakes-killing-your-cylinder-seals
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