Hudson 1938 Terraplane, Owner'S Manual

Page: 50 / 82

48 H U D S O N T E R R A P L A N E
As the air enters the cleaner body through the opening at the top, it is directed to
the oil located in the reservoir at the bottom of the cleaner body. The air velocity
and agitation of the oil due to movement of the car tends to keep the filter unit
bathed in oil at all times.
As the surplus oil drains from the filter unit, it tends to carry with it the particles
of dirt clinging to the filter unit, which accumulate at the bottom of the reservoir,
thereby permitting only clean air to enter the carburetor.
This type of air cleaner is highly
efficient and can be obtained from your Hud-
son dealer. See page 19 for Cleaning and
Oiling Instructions.
Fuel Pump (Standard)
Delivery of gasoline to the carburetor is
by means of a diaphragm type fuel pump,
Figure 41, operated from an eccentric on
the camshaft.
A filter screen and sediment bowl
(A) are provided to prevent foreign matter in the gasoline from reaching the
carburetor. This bowl and screen should be removed and cleaned every 2,000 miles or
oftener if the accumulation in the bowl necessitates it.
To remove the bowl and screen, loosen nut (B) and swing strap (C) to one side.
Before replacing parts, carefully examine the screen and bowl gasket and replace if
damaged.
Combination Fuel and Vacuum Pump
(Optional or accessory)
The combination fuel and vacuum pump, Figure 42, which is available as
optional equipment or an accessory, incorporates a vacuum pump (D) to provide
greater vacuum to improve operation of
the windshield wipers on acceleration, and
particularly in negotiating upgrades when
engine vacuum is generally low.
The operation of the combination pump
is similar to that of the standard fuel pump.
The same cleaning instructions ap-
plying to the standard fuel pump like-
wise apply to the combination fuel and
vacuum pump.
Figure 41
Figure 42