Hudson 1948 - 1952, Service Manual

Page: 144 / 333

6 - 8 ELECTRICAL SYSTEM
BRUSHES:
1. Brushes should slide freely in their holders and make
full contact with the commutator. Worn brushes should
be replaced.
2. To replace brushes, unsolder the brush pig tail from the
field or brush holder and open the loop. Insert new pigtail
the full depth of loop and clinch and solder pigtail in loop.
3. Seat new brushes with sandpaper or brush seating stone.
Wrap a strip of 00 sandpaper around the armature with
sand side up and turn armature slowly in the direction of
rotation. Blow sand and dust from commutator.
4. Check brush spring tension with a spring scale hooked on
the brush end of the spring. Pull on a line parallel to the
side of the brush and read scale just as spring leaves the
brush. Tension should be 42 to 53 ounces.
5. Change spring tension by twisting the spring holder with
long nosed pliers.
6. Check the two insulated brush holders for ground. Place
one test probe on holder and one on end head. If lamp
lights holder is grounded and end head should be replaced.
ASSEMBLY:
1. Replace armature in frame.
2. Install drive end head and attaching screws.
3. Install commutator end head and through bolts.
4. Pry up brush springs and insert brushes in holders.
5. Replace cover band.
6. Replace Bendix sleeve, pinion, spring retainers, spring,
stop nut, pin and lock ring.
7. On Hydra-Matic Drive equipped cars, Install Bendix
Drive Housing and through bolts.
Installation:
Reverse procedure of removal.
BENDIX DRIVE
The inboard Bendix drive is exposed and may be serviced
without removal from the engine.
The Outboard Bendix drive is enclosed in the Hydra-
Matic Flywheel housing an d the starting motor will have to
be removed for repairs.
Failure of Bendix drive pinion to mesh with the flywheel
may be caused by gum, dirt or frost on the screw threads.
Clean the Bendix drive with a brush dipped in kerosene.
Operate the unit several times to loosen gum and dirt and
remove excess kerosene. Lubricate the exposed portion of
armature shaft with S.A.E. 10 engine oil. (DO NOT LU-
BRICATE SCREW THREADS). If proper operation can-
not be secured by cleaning and lubrication, starter should be
removed and checked for bent or damaged parts.
GENERATOR
All the 1952 Model Hudsons employ a shunt wound,
externally controlled generator. The generator is mounted
on the left side of the engine and is operated by the fan belt.
Generator output is controlled by a three unit vibrating type
current voltage regulator. A signal system incorporated in
the regulator operates the signal light on the dash. The
signal lights when the ignition switch is turned on and
remains lighted until the generator starts to charge the
battery.
The voltage regulator holds the generator output at 40
amperes or below, depending on the load requirements. The
generator should not be operated at over 40 amperes for any
length of time.