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
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
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Air Injection Pump: Description and Operation
The mechanical rotary vane air pump is belt driven through an electromagnetic clutch. The clutch allows the pump to be engaged/disengaged by the ECM (via the
air injection relay. If the engine speed exceeds
2500 rpm while air injection is enabled, the ECM will switch OFF the circuit to prevent over speeding the air pump. Excessive back pressure would damage the pump.
Air Pump:
