Runaway Shut Down
Paul,
What does that cost?
CrewCab59
The last Roda Deaco Valve cost just about $250 USD. Since Roda Deaco is a Canadian Company, I had the valve shipped to a friend in Montreal. Then it appeared in the US. Some money was saved.
Some commercial, and most homemade emergency shutdowns use a butterfly type valve. Its possible to get air leaks around the butterfly shaft pivot points. Also the butterfly is in the air stream causing possible non linear flow. Roda Deaco uses a Cleaver style shut off. When the cable pull is pulled, the Cleaver snaps shut stopping all air flow. In the open position its totally out of the way of air flow. Its also a great theft deterrent when parking. Trip the shutdown and no one is going to start the Diesel.
While its unlikely and improbable to have a runaway on a Cummins, it is possible. A runaway requires IMMEDIATE !! action to shut the engine down. I personally dont want to take time to open the hood and then try to shut down the air or shoot a C02 fire extinguisher into the air intake. I dont want to be anywhere near the open engine compartment. Also, if you are able to immediately shut down a runaway, you can repair the cause without major engine damage. For me, the peace of mind, knowing one pull on the Roda Deaco T Pull will shut her down is worth the money. Its like an insurance policy, you hope you never need it.
On the dash, the 3 'T Pulls' are; Mechanical Injector Shutdown. Locking throttle and centered is the Roda Deaco Pull. The Engine picture shows the Roda Deaco Valve, with cable pull. I use what Roda Deaco calls the Mini Valve. Its designed for 4B series, and MUST be mounted at the 'engine' intake.
Paul