Control Air -2?

Discussion of Electro-Motive locomotive products and technology, past and present. Official web site can be found here: http://www.emdiesels.com/.

Moderator: GOLDEN-ARM

Engineer Spike
Posts: 1925
Joined: Tue Mar 16, 2004 3:24 pm

Control Air -2?

Post by Engineer Spike »

On the -2 series, I know the high voltage gear, such as reverser have electric motors, which move the contractors. One thing I've noticed, even on the new Eco rebuilds, is escaping air sound, when coming out of dynamic brake. What does the air control?

User avatar
Wayside
Posts: 178
Joined: Sun Jul 30, 2017 9:00 am
Location: The First State

Re: Control Air -2?

Post by Wayside »

Just a guess but it could be MR air from the DB interlock which had previously pressurized the actuation of the locomotive automatic brake.
We don't know what we don't know.

User avatar
Wayside
Posts: 178
Joined: Sun Jul 30, 2017 9:00 am
Location: The First State

Re: Control Air -2?

Post by Wayside »

We don't know what we don't know.

Engineer Spike
Posts: 1925
Joined: Tue Mar 16, 2004 3:24 pm

Re: Control Air -2?

Post by Engineer Spike »

Thanks Wayside, I didn't think about that. I was always taught to bail, just in case the interlock didn't work.

User avatar
Wayside
Posts: 178
Joined: Sun Jul 30, 2017 9:00 am
Location: The First State

Re: Control Air -2?

Post by Wayside »

Engineer Spike wrote:Thanks Wayside, I didn't think about that. I was always taught to bail, just in case the interlock didn't work.
Good practice, since the DBI action is not trainlined, and trailing units might not cooperate on their own.
We don't know what we don't know.

Return to “EMD - Electro-Motive”