A. Coal oil could be used to clean and cut the dirt out of the pot and
from off the plunger, but after the dash-pot and plunger have been
cleaned, all oil must be wiped off, for oil would cause the plunger to
stick as well as collect dirt.
23. Q. If the carbon of lamp should "jig or pound", what can be done to
stop it?
A. If the carbons pound the electrode, it is evidence that the iron
armature No. 64 may be too far out of the solenoid, or the speed of the
turbine engine may be too slow. This trouble can be remedied by adding
another link to the suspension link, which has one end connected to the
magnet yoke, the other end being connected to the iron armature No. 64.
If, however, when the arc is formed, it is found that the bottom end of
iron armature No. 64 measures one-half inch from bottom of solenoid, the
pounding is caused by the speed of turbine engine being too slow.