Chevrolet 1980 Light Duty Truck Service Manual page 243

A. TO REDUCE CLEARANCE
SLIDE THE CLAMPING
SCREWS AROUND THE
M AST JACKET IN THE
DIRECTION OF ARROW A.
B. TO INCREASE CLEARANCE
SLIDETHE CLAMPING
SCREWS AROUND THE
M AST JACKET IN THE
DIRECTION OF ARROW B.
A D JU S TM E N T PR OCEDURE
1. W IT H T H E T R A N S M IS S IO N IN N E U T R A L D IS C O N ­
N E C T T H E T R A N S M IS S IO N R O D S .
2. T E S T F O R R O T A T IO N A L D R A G B Y T U R N IN G T H E
S H IF T L E V E R (IN S ID E
2-3 S H IF T A R C . D R A G . M E A S U R E D A T T H E S H IF T
K N O B , M U S T BE N O
D R A G IS M O R E
M U S T BE M A D E B E F O R E P R O C E E D IN G W IT H T H E
A D J U S T M E N T .
3. L O O SEN T H E T H R E E C L A M P IN G SCREW S.
4. IN C R E A S E C L E A R A N C E B Y S L ID IN G T H E C L A M P ­
IN G SCREW S IN D IR E C T IO N O F A R R O W " B " A B O V E
U N T IL T H E 1 S T -R E V . S H IF T L E V E R C O M P L E T E L Y
F R E E O F D R A G .
5 . D E C R E A S E C L E A R A N C E B Y S L ID IN G T H E C L A M P
IN G SCREW S IN D IR E C T IO N O F A R R O W " A " A B O V E
U N T IL A S L IG H T D R A G IS F E L T A T T H E 1 S T -R E V .
S H IF T L E V E R .
6. T IG H T E N T H E T H R E E C L A M P IN G SCREW S.
7. R E C O N N E C T T H E T R A N S M IS S IO N R O D S
N O T E : IF N O P R O B L E M W IT H S T E E R IN G C O L U M N
D R A G IS IN V O L V E D , T H IS A D J U S T M E N T C A N
BE M A D E B Y
1ST. R E V . T R A N S M IS S IO N R O D A N D O M IT T IN G
STEP 2.
Disassembly-Tilt Columns (Fig. 3B 4-49)
Steps 3-14 may be performed with the steering column
in the vehicle.
1. Remove the four screws retaining the dash
mounting bracket to the column and set the bracket aside
to protect the breakaway capsules.
2. Mount the column in a vise using both weld nuts
of either Set A or B as shown in Figure 3B4-41. The vise
jaws must clamp onto the sides of the weld nuts indicated
by arrows shown on Set B.
Do not place the column in a vise by
NOTICE:
clamping onto only one weld nut, by clamping onto one
weld nut of both Sets A and B or by clamping onto the
sides not indicated by arrows, since damage to the
column could result.
3. Remove the directional signal switch, lock cylinder
and ignition switch as outlined previously in this section.
4. Remove the tilt release lever. Drive out the shift
lever pivot pin and remove the shift lever from the housing.
5. Remove the three turn signal housing screws and
remove the housing.
.M A S T JA C K E T
. 2 - 3 S H IFT LEVER
.P IC K UP LEVER
1 S T-REV.
S H IFT LEVER
A L IG N M E N T
LEVER
S N A P RING
UPPER STRG .
S H A F T
LO W ER M A S T
J A C K E T BEARING
L O W ER BEARING
R ETAIN ER
T R U C K ) T H R O U G H TH E
M O R E T H A N 2 .0 LBS. IF
T H A N 2 .0 LBS. C O R R E C T IO N S
D IS C O N N E C T IN G O N L Y T H E
Fig. 3B4-48--Adjusting Lower Bearing-Typical
STEERING CO LU M N S
A. TO REDUCE CLEARANCE
SLIDE THE CLAMPING
SCREWS AROUND THE
M AST JACKET IN THE
DIRECTION OF ARROW A.
B. TO INCREASE CLEARANCE
SLIDE THE CLAMPING
SCREWS AROUND THE
M AST JACKET IN THE
DIRECTION OF ARROW B.
. 0 0 5 IN. S H IM
A D JU S TM E N T PR O C ED URE
1. W IT H T H E T R A N S M IS S IO N
N E C T T H E T R A N S M IS S IO N R O D S .
2. T E S T F O R R O T A T IO N A L
T H E S H IF T L E V E R
T H E 2-3 S H IF T A R C . D R A G
S H IF T K N O B M U S T BE N O M O R E T H A N
IF D R A G IS M O R E T H A N 2 .0 LBS. C O R R E C T IO N S
M U S T BE M A D E B E F O R E P R O C E E D IN G W IT H T H IS
A D M U S T M E N T .
3. L O O S E N T H E T H R E E C L A M P IN G S CREW S.
4 . IN S T A L L A .0 0 5 IN . T H IC K S H IM B E T W E E N T H E
S PAC E A N D E IT H E R O F T H E S H IF T L E V E R S . T H E
A B O V E IL L U S T R A T IO N
T W E E N T H E S PA C ER A N D T H E 2-3 S H IF T L E V E R .
5. S L ID E T H E C L A M P IN G
O F A R R O W B U N T IL T H E S Y S T E M IS LO O S E . T H E N
S L ID E T H E SC R E W S
U N T IL A D E F IN IT E D R A G
R E V . S H IF T L E V E R .
6 . T IG H T E N T H E C L A M P IN G SCREW S.
7. R E M O V E T H E S H IM .
8. R E IN S T A L L T H E T R A N S M IS S IO N R O D S .
N O T E : IF T H E R E IS N O P R O B L E M W IT H S T E E R IN G
C O L U M N D R A G . T H IS
M A D E B Y D IS C O N N E C T IN G
R E V . T R A N S M IS S IO N
S TEP . 2.
6. Install the tilt release lever and place the column in
the full "up" position. Remove the tilt lever spring retainer
using a # 3 phillips screwdriver that just fits into the slot
opening. Insert the phillips screwdriver in the slot, press in
approximately 3/16", turn approximately
counterclockwise until the ears align with the grooves in the
housing and remove the retainer, spring and guide (Fig.
3B4-50).
7. Remove the pot joint to steering shaft clamp bolt
and remove the intermediate shaft and pot joint assembly.
Push the upper steering shaft in sufficiently to remove
the steering shaft upper bearing inner race and seat. Pry off
the lower bearing retainer clip and remove the bearing
reinforcement, bearing and bearing adapter assembly from
the lower end of the mast jacket.
8. Remove the upper bearing housing pivot pins using
Tool J-21854-1 (Fig. 3B4-51).
9. Install the tilt release lever and disengage the lock
shoes. Remove the bearing housing by pulling upward to
extend the rack full down, and then moving the housing to
the left to disengage the ignition switch rack from the
actuator rod.
10. Remove the steering shaft assembly from the upper
end of the column.
3B 4-29
. M A S T JA C K E T
. 2 - 3 S H IF T LEVER
.P IC K UP LEVER
UPPER STRG .
S H A F T
S PACER \ '" LO W ER M A S T
LO W ER B EA RING J A C K E T B EA R IN G
RETAIN ER
IN N E U T R A L D IS C O N ­
D R A G B Y T U R N IN G
(IN S ID E T R U C K ) T H R O U G H
M E A S U R E D A T T H E
2 .0 LBS.
SHOW S T H E S H IM B E ­
SCR EW S IN D IR E C T IO N
IN O PPO SITE D IR E C T IO N
IS F E L T A T T H E 1ST
A D J U S T M E N T C A N BE
O N L Y T H E 1ST.
R OD A N D O M IT T IN G
1/8 turn
LIG H T T R U C K SER V IC E M ANUAL