HEAVY DUTY ALTERNATORS
Figure 22 - Removing Slip Ring Assembly.
Clean the rotor shaft and apply a small amount
of Loctite "Sleeve N Bearing Mount" to the shaft
on the section normally occupied by the slip ring
Position the new slip ring assembly on the shaft
so that the two leads are aligned with the two
rotor coil eyelets on the rotor, and carefully press
the slip ring assembly onto the shaft.
There is no stop on the shaft to prevent the slip
rings from being pressed on too far. It is
therefore necessary to press the slip rings only
to a point where there is 9.5 mm (3/8") space
between the inner edge of the slip rings and the
rotor (See Figure 23).
Figure 23 - Slip Ring Locating Dimension.
If slip ring end bearing has been removed, press
a new bearing in place from the outside of the
housing. Bearing should be installed with seal
facing in toward slip rings. When properly
stamped on the end of the bearing will be facing
toward the outside of the housing. Bearing
should seat against lip on inside end of bearing
bore. After bearing is installed, apply a small
amount of grease (Chevron SRI 2 or equivalent)
Reinstall heat sinks in slip ring end housing. Be
sure that upper and lower insulating washers are
in their proper location. Install but do not tighten
lower heat sink retaining screws, lockwashers,
guardwashers and insulating washers (See
Figure 10). Replacement heat sinks may differ
in thickness or appearance from the original
Install terminal bolts and regulator lead wires.
Red wire goes on positive heat sink and black
wire goes on negative. Be sure that mating
surfaces of heat sinks, terminals and terminal
bolts are clean and free of paint to insure a good
electrical connection (See Figure 8).
Install two insulating bushings on each terminal
bolt and install regulator housing. Be sure that
red and black regulator leads are properly routed
through cutaway section of end housing, and
install and tighten nuts on terminal bolts (See
Tighten lower heat sink screws and check all
leads for proper routing, being sure that no lead
is pinched under heat sink.
Reinstall stator and terminal nuts. It is advisable
to align stator and housing by temporarily
installing the through bolts.
Press drive end bearing into housing and
reinstall bearing retainer and four screws. When
installing bearing, press on outer race to avoid
transmitting force through the bearing balls
which could brinnell the bearing.
Press drive end housing and bearing on to rotor
shaft. Using a sleeve around the shaft, press on
the inner race to avoid brinnelling the bearing.
Install rotor and housing assembly into stator
and slip ring end housing assembly, being sure
that mounting ears are aligned.
Install three through bolts and self locking nuts.
Torque to 5.6-6.8 Nom (50-60 in. lbs.). Place a
small amount of grease (Chevron SRI 2 or
equivalent) in housing and reinstall the metal
dust cap by carefully pressing it into place.
CTS-4043A - Chapter II - Page 10