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ACCESSORIES
9-9
T ROD LENGTH TO MINIMUM
WITH CARB. ON SLOW IDLE
ND ENGINE NOT RUNNING
FIGURE 1
WIRING-PART OF
NOTE: REGULATOR MOUNTING
IS THE SAME AS "Y" ENGINE.
UPPER SPEEDO SHAFT
TO INSIDE OF CAR
AIN WIRE HARNESS
ROUTE UPPER SPEEDO SHAFT
ASM. BETWEEN DASH &
LOWER SPEED0 SHAFT
TRANS. SHIFT ROD
TO TRANS.
4057
Fig. 9-7 Cruise Control Regulator
&
Servo Mounting
- "R"
and
"K"
V8's.
A
and G Series
shall not leak down more than 5 inches of vacuum in one
minute. If leakage is detected, replace the servo. To utilize
engine as a vacuum source, proceed as follows:
1. Disconnect servo cable at carburetor and vacuum hose
from the servo, then connect engine vacuum directly to the
servo fitting.
2. Note position of servo diaphragm.
3. Start engine--the diaphragm should pull in.
4. Clamp off engine vacuum supply line and check for
leakage.
The cruise release brake valve (vacuum) and connecting
hoses can likewise be checked using a vacuum pump.
For further diagnosis refer to Figs. 9- 12 and 9- 13.
ON-CAR SERVICE
The components of the Cruise Master system are
designed to be replaced if they become inoperative. The
regulator
is calibrated
in
such
a
manner
during
manufacturing that overhaul operations are impractical.
However, one adjustment may be made to the regulator to
correct speed drop or increase at the time of engagement.
REGULATOR
One regulator adjustment is possible
-
Engagement
Cruising Speed Zeroing (to remove any difference between
engagement and cruising speed). No regulator adjustment
should be made, however, until the servo cable adjustment
has been checked and vacuum hoses are checked for leaks,
kinks, or other restrictions.
If the car cruises at a speed a few mph above or below
the engagement speed, this error can be corrected with a
simple adjustment of the orifice tube in the regulator (Fig.
9-14).
CAUTION: Never remove orifice tube fiom
casing. It cannot be reinstalled once it has been
removed.
1 . To check cruise speed error, engage Cruise Master at
55 mph.
2. If car cruises below engagement speed, screw the
orifice tube outward.
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