Chevrolet 10 Series 1970 Service Manual page 586

ELECTRICAL—BODY AND CHASSIS 12-24
F ig . 21 — End P lay W are W asher In s ta lla tio n
NOTE: A rm atu re end play is con trolled by end
play -washers. See F igu re 21 fo r p rop er a ssem ­
b ly of end play w ashers.
shaft bushings with lig h t machine oil.
Gear Box
1. A ssem ble g e a r box using r e v e r s e o f disassem bly
procedure.
The p o sitive displacem ent w asher pumps used on the
tw o-speed non-depressed park w ip ers
pump mechanism consisting o f a piston, piston sprii
and va lve arran gem ent
Removal and Installation
R em oval o f the washer pump from the w iper m otor
consists of:
1. Disconnect b attery ground cable.
2. Disconnect d e fro s te r hose and m ove to one side.
3. Rem ove ignition switch fro m instrum ent panel as
follow s:
a. Rem ove lock cylin d er by positioning switch in
" A C C " position and in sertin g a w ire in the sm a ll
Lubricate arm ature
WINDSHIELD WASHER
GENERAL DESCRIPTION
(fig. 23) use a
driven by a 4 lobe cam, ai
SERVICE OPERATIONS
----- GEAR CASE G R O O VES
f— CRANK ARM G R O O VE S
F ig . 2 2 —W ip e r C rank Arm in Park P osition
NOTE: Lu bricate gea r teeth with D elco Cam
and B a ll B earing lubricant o r equivalent.
sure c o v e r is p ro p e rly located o v e r dowel pins
and be sure to rein sta ll ground strap.
P la ce w iper in park position and in sta ll crank arm
on output shaft, rotate crank so alignm ent m arks line
up with those on co ve r (fig . 22).
Replace retaining nut,
3 .
tighten retaining nut.
fo llo w e r assem bly (fig. 25). The cam is attached to one
shaft o f the w iper m otor output gea r
gram m ing is accom plished e le c tr ic a lly and m echanically
by a re la y assem bly and ratchet wheel arrangem ent.
hole in the cylin d er fa ce.
depress plunger and continue to turn key counter­
clockw ise until lock cylin d er can be rem oved.
b. Rem ove ignition switch b e zel.
c. Push ignition switch through dash and le t hang.
4. Disconnect e le c tric a l
pump.
N O T E : M ark w a s h e r
rein stallation .
Be
place crank arm in vis e ,
(fig . 24). P r o ­
Push in on w ire to
connector and hoses from
h o s e s f o r c o r r e c t
CHEVROLET TRUCK SERVICE MANUAL