Canadian Railroads > Tuesday Two: GMD GP9 Locomotives

Here are two CN GMD GP9 photos taken in London, Ontario thirty-five years ago. The skies were perfectly clear until about noon when they became thick with clouds.
Image one: CN 4518 on March 24,1981.
Image two: CN 4565 on March 25, 1981.
Bob 

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Are those hoods on 4518 for plow service?

CPR_4000 Wrote:
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> Are those hoods on 4518 for plow service?
I might be wrong, not for plow service but called "winterisation hatches". Helped keep snow out of various parts of the unit.  Doug

Nice shots.
Yes, those additional box-contraptions on the roof are for snowplow duty. both units have winterization hatches, located on top of the cetner-most rooftop radiator fan.  At the time, CN's rebuilt F units had similar boxy structures to keep snow out of the intakes and open areas (like fan grates) when in plow duty.

hoggerdoug Wrote:
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> I might be wrong, not for plow service but called
> "winterisation hatches". Helped keep snow out of
> various parts of the unit.

As DrLoco said above, both units have winterization hatches. Winterization hatches had a baffle that could be set to direct some hot fan exhaust back into the engine compartment in cold weather. Mostly seen on EMD's but some CP and CN first generation MLW's had them too.



Edited 3 time(s). Last edit at 02/14/17 20:09 by CPR_4000.

That FR stencil is amusing....