1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club

ELECTRICAL SYSTEM 6 - 15
BRUSH REPLACEMENT:
Generator brushes may be replaced without disassembling
generator. Brushes should be replaced if they are oil
soaked or worn to less than 1/2 of their original length.
1. Remove cover band.
2. Disconnect brush leads.
3. Lift brush arms and remove brushes.
4. Install new brushes in holders and connect brush leads.
5. Cut a strip of 00 sandpaper the exact width of commutator.
6. Lift each brush and slide sandpaper under brush with
sanded side against brush.
7. Pull sandpaper so that brush is forced against holder.
Once or twice is sufficient. (Brush seating stone may be
used to seat new brushes.)
8. Blow sand and carbon dust out of generator.
9. Run generator under load to obtain perfect brush seating.
10. ReInstall cover.
GENERATOR ASSEMBLY:
6. Install armature in frame so that dowel pin enters hole
in drive head.
7. Soak bronze bearing in commutator end head in engine
oil and pack grease pocket with high temperature grease.
8. Assemble commutator end head on armature.
9. Install through bolts - make sure lower bolt passes under
field connection insulation.
10. As through bolts are tightened, strike the generator
frame a sharp blow with a fiber hammer to align armature
shaft and bearing.
11. Install brushes and attach brush leads. (Brushes should
be seated on commutator with 00 sandpaper or brush
seating stone.)
12. Install Woodruff key, drive pulley, lock-washer and
shaft nut.
ARMATURE SHAFT END PLAY:
1. Mount dial indicator on drive head end with plunger in
line with and touching end of shaft.
2. Move to both extreme positions and read end play.
3. If end play is not within .003 to .010 inches, improper
assembly is indicated.
1. Pack ball bearing one-half full of high temperature, nonfiber
grease.
2. Soak felt washers in engine oil before assembly.
3. Install felt washer, retainers and bearing in drive head end.
4. Install bearing retainer gasket, felt washer, and bearing
retainer.
5. Install snap ring on armature and assemble on drive head
end.
FIGURE 11