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MTH Big Boy Operating Manual
OIL & LUBRICATION INSTRUCTIONS
In order for the engine to perform correctly and quietly, it is important that
the chassis be lubricated before operation. Lubrication should include all
side rods and linkage components and pickup rollers to prevent them from
squeaking. Use light household oil and follow the lubrication points
marked “L" in Fig. 9 below.
The locomotive’s internal gearing has been greased at the factory and
shouldn’t need additional grease until after 50 hours of operation or one
year whichever comes first. Grease can be added by inserting grease into
the gear box inside the locomotive chassis. In order to access the gear box,
the boiler must be removed from the chassis by unscrewing the four chassis
screws as seen in Figure 10 on page 28. Once the boiler is removed, the
two gear boxes can be opened up by unscrewing the four screws on the
gearbox cover plate. One gearbox is located behind the motor and the
second is positioned at the end of universal drive train. Grease can then be
applied into the gearbox using a grease tube dispenser.
Figure 8: Lubricating The Locomotive Chassis
Figure 9: Lubricate The Tender Chassis Trucks
