Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Belt Tension Data


On the 190E 2.3L, 420SEL, and 560SEC, SEL & SL models, A/C compressor belt tension is 110 lbs on new belts, and 88-99 lbs. on used belts. On all other models, the belt tension is maintained by an automatic belt tensioner.