Fault Phenomenon: Lonking 855 wheel loader engine noise is loud, exhaust leak sound at the manifold, power drops.

Troubleshooting Process:
– Checked gasket: exhaust manifold gasket blown.
– Checked bolts: mounting bolts loose or broken.
– Checked manifold: exhaust manifold deformed.
– Checked cylinder head: exhaust port damaged.

Root Cause: The exhaust manifold mounting bolts loosened, allowing high-temperature, high-pressure exhaust gas to blow out the gasket, causing leakage and power loss.

Required Parts: Replace exhaust manifold gasket and bolts, straighten manifold.