Harley Davidson DUO-GLIDE 74 OHV. Service manual (1959) - page 8
In step three, touch one test lead to generator
frame, the other to either of two field coil leads, making sure other
lead from same coil does not touch generator frame. Repeat process on
other coil.
Omit step four.
In place of step five, touch ammeter leads to two field coil leads.
Repeat process with opposite coil. Ammeter should read 1 ampere in both
cases. No reading indicates an open coil, a higher reading indicates a
shorted coil.
In step six, touch one test lead to generator frame, the other to
positive (insulated) brush holder.
TESTING ARMATURE
Test armature as described in ’’Testing Armature," model 58 generator.
REPAIRING COMMUTATOR
Repair commutator as described in ’’Repairing Commutator,” model 58
generator.
POLARIZING GENERATOR
Polarize generator as described in ’’Polarizing Generator,” model 58
generator.
GENERATOR CHARGING RATE
Refer to directions in ’’Generator Charging Rate," model 58 generator,
except minimum charging rate should be 20 amperes.
DISASSEMBLING GENERATOR (Fig. 5E-7)
Remove three fan housing screws (1), washers (2)
and fan housing (3). Turn off armature shaft nut
(4) and remove lock washer (5) and plain washer (6).
Use All Purpose Claw Puller, Part No. 95635-46, to pull the fan (7).
Remove key (8) from armature shaft.
Remove three fan baffle plate screws (9) and lift off baffle plate (10),
fan spacer (11), fan housing spider (12) and end plate (13). Use Claw
Puller to pull brush end bearing housing (14). Ball bearing (29) should
come off with bearing housing and parts 30 and 31. However, the bearing
sometimes stays on the shaft holding parts 15, 16, and 17, in place. In
that event, do not remove bearing and go on to following procedure.
Remove terminal screws (18) and lift brush and spring assemblies (19)
out of brush holders. At this point electrical checks to determine
condition of field coils may be made (see ’’Testing Field Coils”).
Drive clutch spring collar pin (20) out of clutch spring collar (21) on
Duo-Glide, out of oil slinger (22) on Servi-Car. Slip clutch spring (23)
and drive gear off armature shaft. Pull clutch (25) from shaft using All
Purpose Claw Puller. Lift oil deflector (26) off shaft.
Loosen frame screws (27) about 1/4 in. and tap on ends to unseat frame
end (28). Remove frame screws and pull frame end with bearing (29),
gasket (15), oil retainer (16) and bearing shims (17) if there are any.
In factory assembly, these shims are supplied as needed to center
brushes on commutator. The usual assembly includes up to three spacing
shims.
The armature (32) may be pressed out of the frame to release drive end
ball bearing (33). If necessary spring ring (34) and felt grease
retainer (35) can be removed.
