SkyTrak 6036 Service Manual - Manual (Page 251)

Section 10. Electrical System
Model 6036 S/N 9B0499 and Before 10-57
g. Reassembly
1. Solder the coil leads and cable assembly to
the parking switch as shown in Fig. 10.65.
2. Assemble the spacing washer (8, Fig. 10.63)
to the drive shaft, and the gear and shaft
assembly (7) to the gear housing with the flats
on the drive shaft coinciding with the horizon-
tal center line of the motor. Complete step 1
of paragraph f, Lubrication.
3. Assemble the bowed washer (29, Fig. 62) to
the drive shaft with the convex surface facing
the gear housing. Assemble the drive arm
(28) and nut (27) to the drive shaft.
IMPORTANT: Hold the drive plate in a vise to
prevent placing a strain on the gear teeth when
tightening the nut.
4. Tighten the nut to a torque of 50 to 70 lb/in
(5,6 to 7,9 N m).
h. Testing
1. Connect the negative terminal of a fully
charged 12 V battery, depending upon the
rated voltage of the motor, to one of the thru-
bolts (10, Fig. 10.63).
2. Test high speed operation by connecting the
red lead to the positive terminal. The output
shaft will turn at 60 to 75 rpm with a maximum
current draw of 3 A.
3. Test low speed operation by connecting the
green leads to the positive terminal. The
output shaft will turn at 45 to 58 rpm with a
maximum current draw of 2 A.
i. Wiper Blade Park Adjustment
Keep hands away from linkage whenmotor is in
operation to avoid serious personal injury.
After a windshield wiper drive unit has been
installed in a vehicle, but before the arm and blade
are assembled to the drive arm (28, Fig. 10.62),
adjust blade park position as follows:
IMPORTANT: The arm and blade should not be
assembled to the drive arm (28) at this time.
1. Operate the motor through the manual switch.
2. Watch the drive collar on the wiper arm shaft
assembly. Turn the switch to the OFF position
and note the park position of the drive collar.
NOTE: The parking position of the drive collar
must be at the end of a complete oscillation.
Caution !
3. If adjustment is required to obtain the proper
parking position, proceed as follows:
(a) Loosen the cover fastening screws (1, Fig.
10.63).
(b) If the drive collar parks before completing
an oscillation, turn the adjustment stud
counterclockwise.
(c) If the drive collar parks after it has com-
pleted an oscillation and has started the
return swing, move the adjustment stud (9,
Fig. 10.63) clockwise.
(d) Start the motor, shut it off and note the
new parking position of the drive collar.
(e) Repeat the procedures in paragraphs 3b,
c, and d until the required parking position
is obtained, then tighten the cover fasten-
ing screws (1) to a torque of 18 to 22 lb/in
(2 to 2,5 N m).
4. Install wiper arm and blade in park position.
5. Operate the wiper and note the park position
of the blade when the unit is turned off.
6. If the blades don’t park in the required posi-
tion, readjust as described in step 3.
NOTE: Never adjust the arm and blade to park
closer than 1-1/2 to 2" from the windshield mould-
ing. The wipe angle of a 18" arm with a 18" blade
should not exceed 127°.
j. Installation
1. Attach the motor (33, Fig. 10.62) to the motor
mount (32) using three lock washers (31) and
capscrews (30).
2. Install the drive arm (28) and nut (27) on the
gear and shaft assembly (7, Fig. 10.63).
3. While an assistant supports the windshield
wiper motor from within the cab, install the
gasket (22, Fig. 10.62), panto adapter (21), flat
washer (20) and screw (19).
4. Connect the wiring to the wiper motor.
5. Install the fiber washer (18), washer (17), nut
(16), and rubber cap (15).
6. Install wiper arm (13) on knurled driver (14).
7. Install washer (12) and nut (11).
8. Connect wiring to wiper motor.
9. Position the brake valve (8) and install two
capscrews (7), four lock washers (6) and two
jam nuts (5).
10. Install clevis pin (9) and cotter pin (10).