66 H U D S O N T E R R A P L A N E
cease to be emitted from the bleeder tube.
4. Close bleeder valve (E), remove
bleeder hose, and replace screw (D), Fig-
ure 59.
5. Refill master cylinder reservoir.
CAUTION: Do not use a substitute for
Genuine Hudson Hydraulic Brake Fluid.
Substitutes are not suitable for this sys-
tem.
Do not use fluid that has been drained
out of the system. Always replace with
new fluid.
Use Genuine Hudson Hydraulic Brake
Fluid Number 5, except where continu-
ous sub-zero temperatures are encoun-
tered. Hudson Fluid Number 1 is
recommended for use at extremely low
temperatures.
Adjustment of Pedal Push Rod
It is essential that the following adjustment be made accurately to obtain proper
mechanical follow-up to the hydraulic operation of the rear brakes:
With equalizer bar cable plate against stop, loosen brake pedal push rod lock nut
(13), Figure 56, and turn adjusting nut (14) until rear face is 1 7/16" from front end
of push rod (5). Tighten lock nut (13) securely.
Brake Shoe Adjustment
There are only two points of adjustment in the braking system to compensate for
brake lining wear. The eccentric adjustment (B), Figure 55, centralizes the brake
shoes in the drum. The adjusting screw, accessible by removing cover (C), takes up
the clearances between the lining surfaces and the brake drums.
Adjustment for Wear Only
(1) Jack up all wheels clear of the floor.
(2) Disconnect rear wheel cables from equalizer bar cable plate.
(3) After removing adjusting hole cover (C), Figure 59, and gauge hole covers in
brake drums, AT EACH WHEEL, loosen eccentric lock nut (A), and insert .010"
feeler gauge between the lining of secondary (eccentrically controlled) shoe and
brake drum. Turn the eccentric adjustment in the direction of forward wheel revolu-
tion until .010" feeler is just snug at anchor and adjusting ends of secondary shoe.
Tighten eccentric lock nut.
The clearance at both ends of secondary shoe should not vary more than .003".
Should the variation be greater than this it will be necessary to relocate the
anchor pin. This work should be done by an Authorized Hudson Service
Figure 59
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