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Old 10-14-2004, 11:56 PM
psfred psfred is offline
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Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
I believe some 240s had mechanical governors instead of vacuum governors, so they won't have a butterfly in the intake. If there is a vacuum line to the back of the IP, you have a vacuum governor. If not, it's mechanical and there won't be a butterfly in there.

Don't mistake the vacuum throttle for the anti-backrunning plate.

As for stopping a runaway engine, the safe (although messy) way is to loosen the injector lines. You can also discharge a CO2 fire extinguisher into the intake. The main reason not to use your hand is that the suction will cause serious bruising and might even rupture the skin. On turbos, you would have to remove the air filter housing and cover the turbo intake (else too much air gets in and it won't stop), and the turbo will cheerfully munch off most of your hand it if touches the turbine. Not funny.

Peter
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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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