over the electrical clips until they are
5940-621-3276 to the coil leads) and se-
completely covered.
cure the clips with the terminal screws.
Slide the electrical cable nipples down
Section VI. WORK LAMP
tenance is limited to removal and inspec-
65. Description
tion of the unit and replacement of the
The work lamp (5, fig. 5) is an assem-
incandescent lamp.
bly consisting of a 3/8 inch brass tubing
b. Removal. Remove the plug from the
bent at 90 degrees on which a lamp socket
115-volt electrical receptacle and lift the
is attached. A lamp lead with a two prong
work lamp from the drive column, Un-
plug is attached to the assembly for plug-
screw the incandescent lamp from the
ging into a 115-volt electrical receptacle
socket.
(4, fig. 4). The fifty watt incandescent
lamp used for illumination is covered by
c. Inspection. Inspect the lamp lead
a shield to protect the operators eyes
for scuffed insulation and deterioration,
from the glare and concentrate the light
Inspect the plug for bent prongs and other
on the tester control panel. The work
damage.
lamp is mounted by inserting the end of
d. Installation. Install the incandes-
the bent tubing in the hole in the top of
cent lamp 6340-155-8634 in the lamp
the drive column (4, fig. 5) and the plug
socket. Insert the rod of the work lamp
of the lamp lead into the 115-volt elec-
into the hole in the top of the drive col-
trical receptacle.
umn and the plug in the 115-volt electri-
66. Maintenance
cal receptacle.
a. General. Organizational
main-
Section VIl. VACUUM PUMP
Note.
The
key
numbers
shown
below
in
parentheses
refer
to
15
unless
otherwise
indicated.
67. Description
68. Maintenance
The vacuum pump mounted on the un-
a. Genera/. Organizational main-
derside of the control panel directly un-
tenance is limited to removal of the tester
der the vacuum gage (10, fig. 4) is a self
from the case, its installation, and in-
contained unit consisting of a electric
spection and adjustment of the vacuum
motor and a two cylinder piston type
pump.
pump which is capable of vacuum equal
b. Removal. Remove the twelve No,
to 24 inches of mercury. The function of
10 x 1/2 thread-cutting tapping screws
the pump is to duplicate the manifold or
(24, fig. 4) holding the control panel in
venturi vacuum of the engine and is used
place and lift the tester out of the case
for testing those distributors that oper-
(1, fig. 4).
ate on vacuum spark advance mechanism.
C . Inspection. Inspect the hoses and
A rubber hose is connected to each of the
vacuum pump for good condition (par.
two cylinders of the pump which through
43b(l)).
a copper "Y" are connected to the vacuum
d. Adjustment.
(1) Turn the vacuum pump control
pump control (13, fig. 4). The vacuum
hose (9, fig. 4) and the hose to the vac-
(13, fig. 4) fully clockwise.
(2) Prop the tester on end so the top
uum gage are connected directly to the
of the pump is easily accessible.
vacuum control.
