Chevrolet 70 1969 Series, Руководство по ремонту

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C AB A N D BO DY M O U N T IN G S
1-8
NOTE: Term inals A re N um bered
For P u rp o se s o f Explanation
LO SP EED — A s
Shown
HI SP EED — Disconnect Jumper W ire
From Terminal No. 3
O FF— Leave Jumper Connected to
Term inals 1 a n d 3 But Disconnect
it From G round
Jumper Wire
> . r —I I i ■ For Bench Testing
Connect to
T-030
Figure
I ?
— Troubleshooting Two-Speed
Wiper Motor Circuits
the old sealing compound from around cowl open­
ing, then apply a bead of new compound around the
opening.
Perforin the installation procedures in the re­
verse of "Removal" procedures.
IM P O R T A N T : Make sure the motor ground
strap is free of paint before installing motor
mounting screws; otherwise motor will not operate.
WIPER
MOTOR
REPLACEMENT
(TILT CAB MODELS)
(Refer to Figures 5 and 6)
R E M O V A L
1. Remove hex crown nut and lock washer
M o to r A sse m b ly
Sp rin g W a sh e r
C o v e r
\ End
P la y W a sh e r
P arkin g Switch
Bolt G e a r Rib
N ut
Figure 12 — Motor Drive Unit Disassembled For
Access To Parking Switch Contacts
which attaches wiper arm to knurled driver and
pivot shaft (fig. 6). Remove arm from driver, then
remove driver.
2. Referring to figure 6, remove rubber rain-
shield, hex nut, flat steel washer, and leather
washer from pivot shaft housing.
3. Inside of cab, disconnect electrical wiring
at connector on motor drive unit. If equipped with
washers disconnect hoses.
4. Remove four cap screws which attach motor
and drive unit to cab panel. Figure 5 shows wiper
unit removed.
IN S T A L L A T IO N
1. Position styrofoam pad on pivot shaft hous­
ing, then locate motor and drive unit to cab panel.
Attach unit mounting bracket to panel with four
cap screws and washers.
IM P O R T A N T : Make sure a good metal-to-metal
contact is made between panel and mounting bracket
so as to provide an electrical ground for motor.
2. Connect electrical wiring to terminals on
drive unit. If equipped with washers, connect hoses.
3. Referring to figure 6, install leather wash­
er, flat steel washer, hex nut, and rubber shield on
pivot shaft housing. Position arm driver on pivot
shaft.
4. Before installing wiper arms, operate wiper
motor momentarily, then turn it off which should
rotate pivot shaft to "Park" position.
5. Install arm on driver of shaft so that it is
located in the "Park" position. Wet windshield,
then again operate wiper and check arm sweep.
Reposition arm on shaft driver if necessary. Se­
cure arm on shaft with crown nut.
WIPER TRANSMISSION LINKAGE AND
M OUNTING BRACKET REPLACEMENT
(TILT CAB MODELS)
R E M O V A L (Fig. 5)
1. Remove small retaining ring near end of
transmission shaft, then slide the flat washer and
thrust washer from end of shaft.
2. Remove the three small screws which at­
tach motor mounting bracket to motor. Move motor
with attached linkage from mounting bracket suf­
ficiently to allow access to connecting link retain­
ing rings.
3. Remove connecting link retaining rings,
then remove link. Separate motor from mounting
bracket.
4. The transmission shaft can be removed
only after the shaft housing is separated from
mounting bracket. Housing is attached with two
screws, nuts, and washers.
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L