Valve lash adjustments

Last week we worked on valve lash adjustments on a few different engine brands, Cummins, Mercedes, and a Mack E7. We also adjusted the engine brake on engines that had one.

Cummins

Cummins Marine.

Checking some clearence.

Peace be with you.

Mercedes

Mack E7, finding #1 TDC was fun, the flywheel was a bit rusty and hard to see timing marks, though the book showed a way to find it it easy using holes in the face of the flywheel combined with degree marks on the edge of the flywheel. It all worked out. Manuals are useful, lol.

Setting the lash.

I learned not to just jump into the job, although adjusting valve lash seems straight forward, not all engines are created equal, tolerances set by the factory can change, and doing research will help out. 

The exhaust valve lash setting change from 0.024″ (0.610 mm) to 0.028″ (0.711 mm) for E7 engines was effective with the mid- 1996 introduction of the V-MAC® II fuel economy engines. Always verify the correct exhaust valve lash setting by noting the setting stamped in the lower right-hand corner of the engine identification plate.  

Week 8 hrs:30