commutator.
Then push the commutator
end frame and the armature back against
the field frame.
Lubrication
All bearings, wicks and oil reservoirs
should be saturated with SAE No. 20 oil.
Place a light coat of lubricant, Delco
Remy No. 1960954, on the washer located
on the shaft between the armature and
shift lever housing.
Sintered bronze bearings used in these
motors have a dull finish, as compared to
the early type machined, cast bronze
bearings which had a shiny finish.
Before pressing the bearing into place,
dip it in SAE No. 20 oil. Also, tangent
wicks, if present, should be soaked with
SAE No. 20 oil.
Insert the wick into
place first, and press in the bearing.
DO NOT DRILL, REAM OR MACHINE sin-
tered bearing in any way. These bear-
ing are supplied to size.
If drilled or
reamed, t h e I . D . w i l l b e t o o l a r g e , a l s o
Figure 10D-7. Checking Solenoid
the bearing pores will be sealed over.
Pull-in Winding
NOTE
It is not necessary to cross-drill a sin-
tered bearing when used with a tangent
wick.
If needed to reduce the voltage to
Because the bearing is so highly
the specified value, connect the
porous, oil from the wick touching the
carbon p i l e b e t w e e n t h e b a t t e r y
outside
bearing
surface
bleed
will
through and lubricate the shaft.
and the (MTR) terminal as shown.
If the carbon pile is not needed,
M i d d l e b e a r i n g s are s u p p o r t b e a r i n g s
connect a jumper directly from the
and prevent armature deflection during
battery to the (MTR) terminal.
cranking.
As compared to end frame
bearings, the clearance between middle
bearing and shaft is large and the clear-
ance
provides a
loose
fit
when
assembled.
To prevent overheating do not
l e a v e the pull-in winding energized
P i n i o n Clearance
more than 15 seconds.
The cur-
rent draw will decrease as the
To check pinion or drive clearance, pro-
w i n d i n g temperature increases.
ceed as follows:
1 . Make
in
connections
as shown
A magnetic switch can be checked in the
Figure 10D-8 on page 10D-8.
same manner by connecting across its
winding.
2. Momentarily flash a jumper lead from
terminal (G) to terminal (MTR).
The
drive will now shift into cranking posi-
Reassembly
tion and remain so until the battery is
disconnected.
To reassemble the end frame with brush-
es onto the field frame, pull the armature
out of the field frame just far enough to
permit the brushes to be placed over the
Electrical Components
