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Total Overhaul: Mercedes GLK’s M272 Engine and 722.9 Gearbox Fully Repaired

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Added by MiAmigo
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This video documents the complete restoration of a Mercedes-Benz GLK, tackling two major issues: the notorious M272 engine with severe cylinder wear and noise, and the 722.9 automatic transmission suffering from harsh gear shifting and impact jolts.

We take you through the full overhaul process — from diagnosis and disassembly, to precision repairs using high-accuracy digital honing and part replacements, and finally reassembly and real-world testing.

Whether you're a car enthusiast, a Mercedes owner, or a fan of restoration craftsmanship, this detailed build is a must-watch.

???? Highlights:

M272 engine rebuild: fixing cylinder scoring, piston wear, and balance shaft failure

Digital precision honing and alloy sleeve installation

722.9 transmission overhaul: replacing burnt clutch packs, valve body, torque converter, and transfer gear

Smooth gear shifts restored

Final test drive and performance check
Category
722.9
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