Buick LeSabre 1965 Service Manual page 680

1 0 - 1 1 0 DISASSEMBLY AND ASSEMBLY
ELECTRICAL SYSTEMS
NO.3 TERMINAL
JUMPER WIRES
CONNEaED TO WIPER HOUSING
I LOW SPEED-AS SHOWN
I HIGH SPEED-DISCONNEa JUMPER
FROM NO.3 TERMINAL
OFF-RECONNEa JUMPER TO
NO.3 TERMINAL AND
DISCONNEa FROM NO. 1
Figure 10-114—Connections to Operate Wiper Independent of Dash Switch
jinto a position where they short
on the corners of the poles. Cen-
ter the coils on the poles and
wedge them in a fixed position.
7. Procedure E (Wiper has ex-
cessive s p e e d in "HI" but
"LO" is normal)
(Crank Arm RPM exceeds 70 @ 12
Volts.)
(a) Check for open resistor and
the resistor ground connection.
(Motor uses 20 ohm resistor.)
8. Procedure F
(Intermittent Operation)
(a) Check solder connections at
wiper terminal board.
(b) Connect up wiper to operate
in "Lo" speed (Figure 10-115).
Connect ammeter (Range 0 - 3 0
amps.) in feed wire circuit* to
wiper and observe current draw.
Allow motor to run until it be-
comes hot.
(1) If current draw is normal
(3.5-5 amps, max.) and w i p e r
cycles on and off, a weak circuit
b r e a k e r is indicated. Replace
case and brush assembly.
(2) If current draw exceeds 5
amps, proceed to Steps c, d
and e.
(c) Adjust armature end-play as
required and recheck current
draw.
(d) Adjust gear assembly end-
play as required and recheck cur-
rent draw.
(e) If adjustments in Steps c and d
fail to correct excessive current
draw c o n d i t i o n , disassemble
motor section of wiper and check
armature on growler for shorted
or grounded condition.
1 0 - 5 9 DISASSEMBLY AND
ASSEMBLY
a. Disassembly of Motor
1. Remove the two motor tie bolts
that attach steel case to gear
housing.
2. Strike the steel case lightly
with a mallet to partially loosen
it from die cast housing and
motor field.
3. Remove the armature end-play
adjusting screw and insert a tool