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REPKD.Repacking Stm. era freight car trucks.
Dan Gledhill
Hello,
Would anyone on this site know just exactly what was entailed when a railroad serviced a car and stenciled on the REPKD.plus date ,location and road abr.name?Most early stm.era truck journals used oil for lube with some form of cotton waste material to transfer the oil and wipe it on the journals,so where does the" repacked "come into it.Were journals checked routinely on cars from foreign roads and how and when would this be done.Obviously the early style brasses would have needed much more attention than todays fit it and forget it roller bearings.So how was this managed for a car that was 3000 miles from it's home road? Regards,Dan Gledhill --------------------------------- Now with a new friend-happy design! Try the new Yahoo! Canada Messenger |
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Richard Hendrickson
On Nov 23, 2007, at 11:35 AM, Dan Gledhill wrote:
In the 1950s, various types of patented journal lubricating devices began to appear, and the use of these became widespread in the 1960s. Prior to that, however, journal lubrication was accomplished exactly as Dan describes. Periodically (typically, about once a year) the cotton waste would pack down and deteriorate to the point where it needed to be replaced, and the carmen who inspected and lubricated journals would remove the old stuff, put in new stuff, and fill the lower part of the journal box with oil. The old repacking data on the car would then be painted over and new data stenciled on. Richard Hendrickson |
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Bob Karig <karig@...>
Dan,
This is an excerpt from my book, Coal Cars: The First Three Hundred Years, regarding the repacking of journal bearings. The book should be out in a few weeks. Repacking Journal Bearings Journal bearings were a critical maintenance item on railroads. Hot boxes resulting from poorly maintained journal bearings caused delays and derailments. To prevent these problems, journal boxes were routinely opened, inspected, and refilled with oil during each interchange. In addition, strict guidelines for their repacking were established by the A.R.A. under Rule 66 of the Code of Rules. Repacking journal bearings was a labor intensive process. The rules required that the journal boxes be jacked, that all journal wedges be removed, inspected, and replaced as necessary, and that the journal boxes be cleaned and repacked in accordance with association guidelines. Only after all journal boxes on the car had been repacked could the stencil be applied indicating that they had been repacked. The rules required that the place, month, day and year, and the reporting marks of the repacking railroad be stenciled on the car body near the bolster at diagonal corners with not less than one inch figures and letters.28 Over time, the rules regarding the interval between repacking of the journals changed. Prior to March 1, 1929, the rule stated that journals "should be repacked when necessary, using properly prepared packing (new or renovated) in accordance with Recommended Practice, at which time all packing should be removed from the boxes and boxes cleaned; dust guards to be renewed (if necessary) or replaced when wheels are changed."29 From March 1, 1929 through 1932, Rule 66 stated journal boxes should be repacked "after the expiration of twelve months,"30 and from 1933 through 1955, the interval was fifteen months.31 In 1956, the interval was extended to eighteen months,32 and in 1958, the interval for cars equipped with journal lubricating devices was extended to twenty-four months.33 When a journal lubricating device was used, it would be indicated near the repacking stencil, as seen in Figure 7.12. In 1950, the A.A.R. inserted Rule 66a governing the maintenance of roller bearings into its Rules of Interchange. Under this rule, railroads were required to lubricate the roller bearings every twelve months. The place, month, day, and year of lubrication and the reporting marks of the railroad doing the lubrication along with the symbol "LUB" were to be stenciled near the body bolster at diagonal corners with not less than one inch figures and letters. Examples are shown in Figure 7.12.34 In 1958, this interval was modified slightly. The interval for roller bearings lubricated with oil remained at twelve months, but the interval for those lubricated with grease was extended to eighteen months.35 Bob Karig |
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aslt28 <karig@...>
Dan,
I realized that I hadn't finished answering your question. If the repacking interval was expiring while the car was on a foreign road, the foreign road would repack the journal bearings for which it would be reimbursed based upon a standard rate established in the Code of Rules for Interchange... This is one of those often overlooked details in modeling. If you're modeling a particular year, then the repacking information should fall within the appropriate repair interval. The same principles apply to reweigh information. Bob Karig |
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Bill Kelly
I'd like to make a couple of additions/changes.....
Bob Karig wrote: snip<I have no information prior to 1932 but the 1932 Code of Rules' rule 66(a) says " Periodic repacking of journal boxes, after the expirartion of fifteen months, as indicated by the stenciling on car, regardless of the responsibility of handling company for change of wheels or other repairs. After the expiration of twelve months, if car is on repair track for other work, journal boxes may be repacked at same time." from 1933 through 1955, the interval was fifteen months. In 1956, theinterval was extended to eighteen months, >snip< I have a lack of information between 1933 and 1944 but some time prior to January 1944 rule 66(a) was changed and the twelve month interval was increased to fourteen months. Rule 66(a) was changed again in the 1951 Code of Rules and the intervals became twelve months and eleven months. With the 1953 Code rule 66(a) was again changed, now the intervals are back to fifteen months and fourteen months. The change to eighteen month and seventeen month intervals came with the 1955 Code of Rules. snip<Thanks for the repacking info, for such a small detail a lot of time can be consumed getting it 100% right. I try for believable. Later, Bill Kelly |
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Bob Karig <karig@...>
Good catch, Bill.
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The change from 15 months/14 months took place effective with the 1939 code of rules. Bob At 02:58 PM 11/27/2007, you wrote:
I'd like to make a couple of additions/changes..... |
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