NOTE
e. Turn motor drive switch to right or left
hand rotation, as indicated by the spec-
Distributor rpm is one-half engine
ifications for the governor being tested.
rpm. If factory recommendations
f. Turn selector switch to 8 cylinder position.
call for 3600 rpm no-load governed
g . Use dwell meter to indicate "make" and
speed, this would be 1800 rpm on
the tester and the governor should
against the manufacturer's specifications
be adjusted so that valve will close
for the governor being tested.
at this speed. Repeat test after each
adjustment.
DELCO-REMY AND HOLLEY GOVERNOR
TESTS.
a. With distributor mounted in tester insert
a. With distributor mounted in tester, insert
proper vacuum adapter in lower fitting on
proper vacuum adapter in lower fitting on
distributor housing and tighten with wrench
distributor housing and tighten with wrench
to insure a good seal.
to insure a good seal.
b. Set MOTOR SWITCH to proper direction
b. Set MOTOR SWITCH to proper direction
of rotation and adjust speed to zero rpm.
of rotation and adjust speed to zero rpm.
c. Attach hose to vacuum adapter and seal
c. Attach hose to vacuum adapter and seal
hose with metal clamp.
hose with metal clamp.
d. Adjust vacuum regulator until gage reads
d. Adjust vacuum control until gage reads
4.5 inches.
5 inches.
e. R e l e a s e hose clamp.
Vacuum reading
e. Release hose clamp, increase distributor
should now be approximately 2 inches.
speed until vacuum gage reading reaches
f. Adjust distributor speed to a point well
a maximum value. This maximum value
a b o v e the desired governing rpm. At
will vary, depending on the type of centri-
this speed the vacuum gage should again
fugal valve parts used,
r e a d the pre-determined setting of 4.5
f. A f t e r this maximum reading has been
inches.
reached, slowly decrease the distributor
g. S l o w l y decrease the distributor speed
s p e e d until the vacuum gage falls 0.1
while observing the vacuum gage. The
i n c h from its maximum reading. The
speed at which the gage reading begins to
speed at which this 0.1 inch vacuum drop
fall will be the no-load governed speed.
occurs will be the no load governed speed.
Holley Governor Cross -section