Westinghouse 5026 Instruction Pamphlet page 23

Fig. 17. Sectional Assembly Views of the "F·l·A" Lubricator
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TYPE "l"-l-A" LUBRICATOR
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their contacts with the ratchet wheel teeth, and then
creeps to the pawl pivots and on to the operating piston
to lubricate these parts.
A sectional view of one of the oil pumps is illustrated
in this drawing, Fig. 17. Each of the six pump units
consists of a cylinder body 7, plunger 9, plunger spring
12, two ball check discharge valves 15 and 19 in
discharge fittings with choke 21, and plunger stroke
adjusting nuts 14. The plunger spring 12 is secured on
the plunger 9 by spring retainer 11 in such a manner that
the force of the spring acts to keep the plunger 9 to the
lowest point in its cylinder that adjusting nuts 14 will
permit.
Reference 40 shows the close mesh strainers provided
in the entrance to the oil chambers to prevent foreign
matter from being carried in with the oil supply. Ad­
ditional close mesh strainers 8 are provided around each
individual oil pump intake as a further protectiop
against sediment in the reservoirs entering the oil pumps.
One oil reservoir has one-half the capacity of the other,
the small reservoir supplying two oil pumps for lubri­
cating the air cylinders of the compressor, and the large
reservoir supplying four oil pumps for lubricating
the steam cylinders of the compressor and the gov­
ernor and throttle valve. The separate oil reservoirs,
as previously stated, permit the use of a different type
of oil in the steam and air cylinders. When the same
oil is used for both the steam and air ends of the com­
pressor, both reservoirs may be connected together by
removing plug 3. Rcmoval of cap nut 26 drains the large
reservoir, and the small reservoir may be drained by
removing plug 3.