Chevrolet 10 Series 1970 Service Manual page 585

WIPER M O TO R DISASSEMBLY
G ear Box
R e fe r to Figu re 20.
1. R em ove the two washer pump mounting screw s and
lift pump o ff washer.
2. R em ove w asher pump d riv e
24, 25). The cam is p ressed on the shaft but can be
wedged o ff by using two sc re w d r iv e r s between cam
and plate.
3. Clamp crank arm in a v is e and rem ove crank arm
retaining nut.
CAUTIO N: F ailu re to clam p crank a r m may
resu lt in stripping of w iper g e a rs !
4. R em ove crank arm , seal cap, T r u -A r c retaining ring,
and end-play washers.
NOTE: Seal cap should
packed with a w a te r-p ro o f type grea se b efore
reassem bly.
5. D r ill out g ea r box c o v e r retaining rive ts , rem ove
co v e r fro m g ea r train.
NOTE: Screw s, nuts and lock w ashers fo r r e ­
assem bling co v e r to w ip er are contained in a
s e rv ic e re p a ir package.
6. R em ove output gear and shaft assem bly, then slide
interm ediate ge a r and pinion assem bly o ff shaft.
7. If n ecessary, rem ove term in al board and park switch
assem bly as follow s:
a. Unsolder m otor leads fro m term in als. Code m o­
tor leads.
b. D r ill out riv e ts secu rin g term in al board and park
switch ground strap to mounting plate.
5 . W asher
1. N u t
2. C ran k Arm 6. G e a r Box C over
3 . Seal Cap 7. O u tp u t G e a r and
4 . R eta in ing Ring
S haft A ssem bly
cam as requ ired (fig.
be cleaned and r e ­
F ig . 20—W ip e r M o to r & G e a r Box Assem bly
8. In te rm e d ia te G e a r
9. W ave W asher
10. G e a r Box Housing
11. Brush P late A ssem bly and
M o u n tin g Brackets
ELECTRICAL—BODY AND CHASSIS 12-23
NOTE: Screw s, nuts and w ashers fo r attaching
a replacem ent term in al board-park switch a s ­
sem bly a re included with the replacem ent a s ­
sem bly.
M otor
1. F ollow Steps 1 through 7b under gea r box d is a s ­
sem bly.
2. Rem ove m otor through bolts, tap m otor fram e ligh tly,
and rem ove m otor fro m mounting plate.
3. Rem ove brush spring tension (fig. 20), slide arm ature
and end plate fro m
from arm ature.
NOTE: Thrust plug located between arm ature
shaft and end plate.
4. Rem ove end play adjusting w ashers fro m arm ature,
noting arrangem ent fo r p ro p er reinstallation.
WIPER M O TO R INSPECTION
Check and inspect a ll parts fo r se rv ic e a b ility , replace
as n ecessary. A ll parts can be replaced individually e x ­
cept m otor fram e and field , which is s e rv ic e d as an a s ­
sem bly. S ervice kits also
w ashers to replace gear co v e r and term inal board riv e ts .
WIPER M OTOR ASSEMBLY
R e fe r to Figu re 20 fo r exploded view o f m otor and gear
train.
M otor
R eassem bly m otor using re v e rs e of disassem b ly p r o ­
cedure.
12. Brushes
13. W ave Washers
14. F la t Washers
15. A rm a ture
m otor fram e. P u ll end plate
provid e screw s, nuts and
16. Thrust Plug
17. Frame and F ie ld
18. End P late
19. T ie Bolts (Tw o R equired)
CHEVROLET TRUCK SERVICE MANUAL