battery voltage to the value specified in Service
Bulletins 1S-180, 1S-186. or 1S-187, and compare
the ammeter reading with specifications. A high
r e a d i n g indicates a shorted or grounded hold-in
To check the pull-in winding connect from the sole-
noid switch terminal (S) to the solenoid motor (M or
NOTE: If needed to reduce the voltage to the
specified value, connect the carbon pile between
the battery and the "M" terminal as shown in dash-
ed red instead of across the battery as shown in
solid red lines. If the carbon pile is not needed,
connect a jumper directly from the battery to the
Figure 6-Solenoid circuit
"M" terminal as shown by the dashed red line.
CAUTION: To prevent overheating, do not leave
the pull-in winding energized more than 15 seconds.
A basic solenoid circuit is shown in Figure 6.
The current draw will decrease as the winding temp-
Solenoids can be checked electrically by connect-
ing a battery of the specified voltage, a switch, and
an ammeter to the two solenoid windings. With all
A magnetic switch can be checked in the same
leads disconnected from the solenoid, make test
manner by connecting across its winding.
connections as shown to the solenoid switch (S or
SW) terminal and to ground, or to the second switch
terminal (G), if present, to check the hold-in wind-
i n g (Fig. 7). Use the carbon pile to decrease the
The reassembly procedure for each type of motor
is the reverse of disassembly.
To reassemble the end frame havingeight brushes
onto the field frame. pull the armature out of the
field frame just far enough to permit the brushes to
be placed over the commutator. Then push the com-
mutator end frame and the armature back against
the field frame.
All wicks and oil reservoirs should be saturated
with SAE No. 10 oil, and the splines underneath the
clutch should be lubricated with a light coat of SAE
No. 10 oil. (Heavier oil may cause failure to mesh at
low temperatures.) Lever housings having a bearing
and seal should have the grease cavity between the
bearing and seal filled with Delco-Remy Lubricant
Figure 7-Checking solenoid hold-in and pull-in windings.
(Note: Terminal locations may vary.)