106—ELECTRICAL SYSTEM
CHRYSLER SERVICE MANUAL
1.3 amperes indicates that coil windings are
shorted, or that wrong coils have been installed.
A current reading that is less than specified in-
dicates poor electrical connections or wrong
field
coils.
Replace
short*
circuited or improper
coils,
or resolder defective connections.
23.
SERVICING THE ARMATURE
Reface commutator if runout exceeds .0005
inch,
or if it is rough, burned, or worn so that
insulation between bars is too high. Undercut
insulation between commutators bars to depth
of y
32
inch, the full width of insulation. Metal
particles are sometimes embedded in grooves
following undercutting and should be removed.
24.
REPLACING FIELD COILS
To replace field coils, a pole shoe screwdriver,
such as Tool C-3078, should be used to prevent
damage to screws and to assure proper tight-
ening when installing coils. Pole shoes that
are loose will rub armature core, causing loss
of efficiency and damage to armature;
25.
REPLACING BRUSHES AND SPRINGS
Brushes that are oil soaked or worn to %
length of a new brush should be replaced. Sand
new generator brushes to fit contour of com-
mutator. With new type brush holder, it is dif-
ficult to measure spring tension (which must
be done after generator is assembled). It is
suggested that new springs be installed when
brushes are replaced.
26.
ASSEMBLING THE GENERATOR
a. Standard Generators
Soak felt washers and Oilite bushing in clean
engine oil. Pack ball bearing about half full
with high temperature non-fiber bearing lubri-
cant. Compress felt slightly to remove oil be-
fore installing.
(Refer to Figs. 7 and 8.) Assemble drive
end parts on armature before installing it in
generator. Do not grip core too tightly in vise.
Install retainer over snap ring before pressing
bearing and end frame assembly on shaft. In-
stall suitable sleeve over armature shaft so that
pressure is applied to inner race when pressing
bearing on shaft.
b.
Accessory Equipment Generators
On generators used with power steering or air
conditioning equipment, install armature and
drive end assembly in generator field frame.
Brushes must be installed before end frame. In-
stall commutator end frame and through bolts.
Place felt and shield in commutator end frame
and press bearing on shaft, applying pressure
to inner race. Install shield.
c. Testing After Assembly
The generator should be tested before it is in-
stalled on car. If proper bench test equipment
is not available, it is possible to motor test
generator. A generator that will motor freely
with specified voltage applied will, in most
cases,
operate properly when driven as a gen-
erator.
27.
MOTORING TEST
Connect a carbon pile rheostat and test am-
meter in series with positive post of 12-volt
battery and generator armature terminal post.
Connect a jumper lead from field terminal post
to ground. Connect a jumper lead to battery
negative post and generator frame. This will
cause armature to rotate as a motor. Adjust
battery voltage to 10 volts. The reading on test
ammeter should be 3.4 to 3.9 amperes with
armature turning smoothly.
28.
INSTALLATION
Place generator in position and install attach-
ing bolts. Adjust drive belt tension at generat-
ing strap so there is a deflection of *4 *
ncn
with 9 to 12 pounds pressure. Refer to Figure
4 Cooling System Section V.
CAUTION
Be sure condenser used for radio interference
is properly attached to armature ("ARM") ter-
minal post.
MyMopar.com
To Next Page
Loading...
