09-04-2010, 09:22 PM
The rule requiring switching steps on locomotives led to the F's rapid demise. Here is part of the rule. I don't doubt they would have lasted as long as the GP's if this wasn't ruled. Most of them had been relegated to use on locals. Some remained in helper service until they were retired.
I don't think any former PRR "F" units made it to Conrail
49 CFR 231.30 - Locomotives used in switching service.
" © Switching step(1) Number. Each locomotive used in switching service must have four (4) switching steps. (See Plate A) (2) Dimensions. Each such switching step must have (i) On locomotives built after March 31, 1977, a minimum width of twenty-four (24) inches and a minimum depth of twelve (12) inches, except when necessary to accommodate the turning arc of a six-wheel truck and its appurtenances, the inside edge of the switching step shall have a minimum width of seventeen (17) inches (See Plate B); (ii) On locomotives built prior to April 1, 1977, a minimum width of eighteen (18) inches, and a minimum depth of eight (8) inches; (iii) A backstop, solid or perforated, with minimum height of backstop of six (6) inches above the safety tread surface; and (iv) A height of not more than nineteen (19) inches, preferably fifteen (15) inches, measured from top of rail to the safety tread surface.
I don't think any former PRR "F" units made it to Conrail
49 CFR 231.30 - Locomotives used in switching service.
" © Switching step(1) Number. Each locomotive used in switching service must have four (4) switching steps. (See Plate A) (2) Dimensions. Each such switching step must have (i) On locomotives built after March 31, 1977, a minimum width of twenty-four (24) inches and a minimum depth of twelve (12) inches, except when necessary to accommodate the turning arc of a six-wheel truck and its appurtenances, the inside edge of the switching step shall have a minimum width of seventeen (17) inches (See Plate B); (ii) On locomotives built prior to April 1, 1977, a minimum width of eighteen (18) inches, and a minimum depth of eight (8) inches; (iii) A backstop, solid or perforated, with minimum height of backstop of six (6) inches above the safety tread surface; and (iv) A height of not more than nineteen (19) inches, preferably fifteen (15) inches, measured from top of rail to the safety tread surface.