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If you experience poor or no smoke output when the smoke unit is on and has
fluid, check the wick to see if it has become hard, blackened, and unabsorbent
around the heating element. To remove the smoke unit you will first have to
remove the boiler shell (by removing the body mounting screws shown in Fig. 11
on pg. 16), board and bracket that block the smoke unit assembly from being
accessed. To do this, follow these instructions:
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. 19.
3. With the board free of the mounting screws, slide the assembly out of the boiler
as seen in Fig. 20.
Remove screws to free smoke
unit. Then turn smoke unit over
to inspect.
Inspection Cover
Screws
Figure 19
Figure 20
4. Once the unit is freed, remove the inspection cover (Fig. 20). 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
Premier Challenger Steam Locomotive
21
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