Steering 3B - Chevrolet 1980 Light Duty Truck Repair Manual

3. R EM O V E A N D IN S TA L L W O R M S H A F T
A N D BALL N U T
REMOVE
1 Loosen lock nut. Use punch 1
against edge of slot.
2. Remove parts as shown
N O TIC E : Use care that the ball nut does not run
dow n to either end of the w orm . Damage may be done
to the ends of the ball guides if the ball nut is allow ed
to rotate until stopped at the end of the worm
W ORM BEAR IN G
A D JUSTER LO C K N U T
i ~
BRASS
Remove bearing cup
fro m housing on ly
if necessary.
Remove Cup
4.
INSTALL
Install parts as shown
J-5755
j
I betw een ball grooves
Install Cup
Fig. 3B 2-3~M anual Gear Overhaul, C hart B
D IS A S S E M B L E A N D
B E A R IN G A D JU S T E R
DISASSEMBLE
Pry low er be aring re­
1.
tain er out w ith scre w ­
driver.
2.
R e m o v e c u p u s in g
J-5822 p u lle r and
slide hammer.
W O R M B E A R IN G
A D JU S T E R
LO W E R W O R M
B E A R IN G C U P
LO W E R W O R M
B E A R IN G
LO W E R B E A R IN G R E T A IN E R
5. D IS A S S E M B L E A N D A S S E M B LE
W O R M S H A F T A N D BALL N U T
DISASSEMBLE
1 D isassem ble parts as 1
show n
2 Clean and inspe ct all 2
p a rts fo r e x c e s s iv e
wear
B A L L N U T
A ssem ble w orm shaft
D im ension A -M easure land
mm
1 0
2.5
5.0
W OR M SH AFT
Fig A
STEERING 3B-3
A S S E M B LE W O RM
ASSEMBLE
Press cup into a d ju s te r
using J-5755.
Install parts as show n
ASSEMBLE
A s s e m b le p a r t s as
shown,
Refer to Fig A fo r
nu m ber of balls used
Dim A
Balls
in per c irc u it
0 04 25
0 10 27
0.20 27
OVERHAUL MANUAL