Hudson 1948 - 1952, Service Manual

Page: 232 / 333

9 - 24 OVERDRIVE
CONNECTOR PLUG CHECK:
Insert a blade 1/4" wide and 1/32" thick successively into
each socket of plug for a distance of 1/2".
Socket should grip blade tightly enough to make a good
electrical contact.
NOTE: Flutes on side of plug indicate the plug numbers
for example 1 flute or notch is for the No. 1 terminal, 2
flutes No. 2 terminal etc
.
FIGURE 33
kickdown SWITCH CHECK :
Disconnect plug at kickdown switch and Install test
harness to kickdown switch but do not connect test harness
to overdrive harness.
A. Connect test lamp between No. 1 terminal and negative
terminal of battery; with switch in normal position, lamp
should light when No. 4 is grounded but should not light
when No. 2, No. 3 or switch case is grounded.
B. Connect test lamp between No. 2 terminal and negative
to r m in al of battery; with switch stem pushed in, lamp
should light when No. 3 is grounded, but should not light
when No. 1, No. 4 or switch case is grounded.
NOTE: All models with overdrive have a kickdown
switch mounted in the floor under the accelerator ped-
al. The accelerator pedal rod on these cars should be
adjusted so that the carburetor throttle is wide open
just before the accelerator pedal touches the moveable
stem of the kickdown switch.
FIGURE 34
CONTROL SWITCH CHECK :
Remove overdrive wires at switch terminals. Ground one
switch terminal; connect a test lamp between the other switch
terminal and the battery negative terminal Figure 34. Put
transmission in neutral. Lamp should light when the over-
drive control button is pushed in and should go out when the
control button is pulled out.
If switch is tested after removal from car, lamp should light
when switch plunger is "out" and should not light when
plunger is "in".
HARNESS CHECK :
1. Remove overdrive harness plug at the overdrive relay and
connect test harness to overdrive harness but not to over-
drive relay. Disconnect harness plug at kickdown switch.
2. Connect test lamp between test harness lead No. 1 and
ground. Lamp should light.
3. Connect test lamp between test harness leads No. 1 and
No. 3. Lamp should light with engine not running but
should go out when engine is started. Shut off engine after
this test.