Steam & Excursion > ASR - Reading T-1 2100 2016 - Throttle Update Part II Sept 17

On a day while our friends at the Ft. Wayne Railroad Historical Society were making history with 765 masquerading in grand fashion as the 767 barely 10 miles south of the 2100, a stalwart group of ASR volunteers attended Saturday’s work session to help finish up work on 2100's multiple valve throttle:
● Gordon Hartschuh
● Tom Gross
● Tiffany Saultz
● Perry Krzyzaniak
● Rick Engle

It was an intense purposeful day at the roundhouse and the rewards were quite gratifying.  The throttle body was still our primary concern and immediate efforts were placed on the throttle rebuild and getting it back together.  A more coarse lapping compound was ordered and volunteers spent all day seating in the valves.  It wasn’t until after lunch that finer compounds were used to start dressing  up the valves.

A limited number of people could work on the throttle at the same time so the remaining volunteers started on new tasks.  The steam chest water drains were repaired and reinstalled.  Air compressor air filters were hung into position.  Insulation was placed in the air intakes of the ash pan to block off cold air flow once a heater is placed in the firebox for the upcoming hydro.  The big task was pressure testing of the steam lubricator.  All the oil lines were disconnected and each pump in the lubricator was individually tested to 400-600 psi.  All lines were reconnected and are ready for service.
 
Though it was getting late, the throttle valve lapping was on the last cycle of 220 grit compound and the seats were looking very smooth and shiney.  Everyone wanted to see the throttle completed so everyone stayed late to see it through to completion.  With the lapping complete the valves were seated into the cam lobes.  It took a little effort to find the right order but they all locked into place and properly cycled open and closed several times.  The valve head studs had previously been chased and cleaned so the valve body heads were put into place and new nuts were installed and tightened down.  The throttle linkage was connected to the throttle lever in the cab and tested and was found to move very smoothly.  By this time, it was after 7 pm, so it was well past time to start cleaning up.

Many thanks goes out to today’s volunteers for the extra effort in completing all the tasks that were started.  Everyone went above and beyond today and are to be commended for their dedication to the project.

Pic 1 - Tiffany and Perry lapping throttle valve seats
Pic 2 - A fully lapped throttle valve seat
Pic 3 - Tiffany tightening down the nuts of the individual throttle valve covers

Sincerely,

Rob Gardner
On behalf of Gordon Hartschuh, ASR Roundhouse Foreman
 

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So glad to see the old girl get some much deserved TLC. Wish I lived a little closer so I could lend a hand on occasion. Thank You to all for your hard work and dedication in bringing the 2100 back to life.

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Do you have any before pictures of the valve seats, it is hard to visually understand what has improved?