GMC 1989 Light Duty Truck, Руководство по ремонту, Страница: 127 / 998

POWER STEERING 3B3-13
8. DISASSEMBLE AND ASSEMBLE RACK
PISTON
D IS A S S E M B LE
1 . D is a s s e m b le p a rts
a s sh o w n
2 C le a n and in s p e c t
all p a rts for
e x c e s s iv e w ear
ASSEMBLE
1 A s s e m b le p a rts
as show n.
NOTICE:
T he b la c k
b a lls are s m a lle r than the
silv e r b a lls T he b la ck
a n d silv e r b a lls m ust be
in sta lle d alte rna tely into
the ra c k -p isto n and
return g u id e to m a in tain
ra ck p isto n to w o rm gear
p relo a d
r T E F L O N S E A L A N D 0 R IN G —
If re p la c e d lu b ric a te new seal
a nd 'O ' ring w ith p ow er
ste erin g flu id
G U ID E — A ltern ately
install rem a in d er of
b a lls and retain with
g rea se at ea ch
end of g uid e
C L A M P
S C R E W -T ig h te n
to 5 Newton M etres
(4 Ft. Lbs.)
9. REMOVE AND INSTALL PITMAN SHAFT
SEALS AND BEARING
R EM OVE INSTALL
1. C lean end of housing
thoroughly to prevent dirt
from entering and be
extrem ely careful not to
score the housing bore.
2. U se screw driver to
rem ove pitman shaft
dust seal.
3. R em ove retaining ring
with snap ring pliers
J-4245.
4. Using screw driver, pry
sea ls and w ashers
from bore.
S E A L B A C K -U P
W A S H E R
PITM AN S H A F T
D U S T S E A L
1 Coat seal lip and washer face
with anhydrous calcium grease.
2 Install p a rts as show n
H O U SIN G A S S E M B L Y
Inspect for b urrs
N E E D L E B E A R IN G
R e m o ve o nly if it
need s re p la cin g
RETAINING
RING
P IT M A N S H A F T S E A L -
r~
J
R em o vin g b ea rin g
r
W hen tool b otto m s on
h o u sin g b ea rin g is
fu lly in s ta lle d .------------
L ______________ ,________
i
I_______________________
J
Install P itm an shaft bearing. Install Pitm an shaft seals.
F-06803
B e fo re a s s e m b lm g ra c k
in h o u sin g , b a ll retainer
J-21552 m ust be in se rte d
into rack to a llo w
rem oval of w orm
L u b ric a te b a lls with
p ow er ste erin g fluid.
Install balls, th rou g h
b all return g u id e hole,
w h ile rotating w orm
c o u n te rc lo c k w is e
Turn w orm un til w orm g ro o v e
is a lig n e d w ith the low er
b all return g u id e ho le
W O R M — S lid e all the way
Figure 2 6 — R em o vin g and Installin g th e R ack P iston and P itm an S h aft S eals and B earing