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ProtoSmoke® Unit Operation
1. Unplug the two wiring harnesses from the board mounted to the inside of the
boiler and behind the smoke unit.
2. Remove the two screws securing the smoke unit inside the shell as seen in Fig. 16.
3. With the board free of the mounting screws, slide the assembly out of the boiler
as seen in Fig. 16.
4. Once the unit is freed, remove the inspection cover (Fig. 16). Inspect the wick; if
it is darkly discolored and hard, it should be replaced.
Replacement parts and wick replacement instructions are available directly from the
M.T.H. Parts Department phone: 410-381-2580; e-mail: parts@mth-
railking.commail: 7020 Columbia Gateway Drive, Columbia MD 21046-1532
4-8-2 U1F Mountain Steam Locomotive
19
Figure 15
Inspection Cover
Screws
Remove mounting screws
Remove mounting screws
Remove mounting screws
Remove mounting screws
Remove smoke unit
to access screws
Figure 16
mounting screws