44
Shofk 11IJ.S1Jth,r1
1,n-u~r•t 1rn11
Front Shock Ab11orber
!-ORD MODEL A
Fi,rura 30
Rear Shock Absorber
SHOCK ABSORBERS
Ford hydraulic double acting shock absorbers operate en-
tirely on the principle of hydraulic resistance. Glycerine is
forced from one chamber to another by the movement of the
lever arm. The working chamber is automatically kept
fu]l by
the glycerine
in the reservoir.
Adjustm.ent:
Turning the square end of the needle valve (see Fig. 30)
changes the adjustment. Resistance is increased when the needle
is screwed in, and decreased when the valve is backed out.
The average adjustment for rear shock absorbers during
warm weather is made as follows: Screw needle valve in until
it seats, then back valve off
1
1
tum. For front shock absorbers,
back valve off ¾ of a turn.
For cold weather adjustment the needle valve in the rear
shock absorbers should be screwed
in until it seats, then backed
off }
2 to
5
.,
of a turn. For front shock absorbers the needle
valve should be backed off·• , to
~J of a tum. A slight movement
of the needle valve ei her way makes a big difference
in the
action of the instruments.
These settings arc of course only approximate and can be
easily changed to suit the individual preference of the owner
and the conditions under which the car is operated. For example.
the owner who drives at high speed over rough roads would
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