Advertisement
6-22
REPLACEMENTS
CHASSIS SUSPENSION
(220)
6-22 REPLACE
O
R REBUSH RADIUS ROD
~
BOW PERM ISS
J
BLE
I~
BOTH
ENDS
6
-23 CHECKING
AND FILLING SHOCK
ABSORBERS
CAUTION: Thoroughly clean off all dirt
from top of shock absorbers, front and rear, to
avoid getting dirt into absorbers when filler
3. Check radius rod for twist and bow, which
should be within limits shown in figure 6-29. If
rod is twisted or bowed it must be straightened
without
heating;
otherwise, replace with a new
part.
4. Install rod with new rubber bushings, re-
versing procedure for removal. When radius
rod pin nuts are
tightened,
normal weight of
car must be on rear springs so that rubber
bushings in rod will be clamped in neutral posi-
tion.
1
Figure 6-29-Radius Rod Dimensions
r
model as specified in group 7.503 of Master
Parts List.
5. Attach upper end of spring to frame with
insulator between end of spring and frame,
and insulator between spring clamp and flat
washer on attaehing bolt. Attach lower end of
spring to spring seat with spring clamp and
bolt. Lockwashers are used on both attaching
bolts.
6. Lower rear end of car and attach links to
shock absorber arms.
1---
-
-
-
36~±:b
ALL
SERIES----
--l
HOLES MUST BE PARALLEL WITH
EACH OTHER WITH
IN
!~
AT 18"
1. Support rear end of car on jacks placed
under rear axle housing so that weight of car
will be on rear springs.
2. Remove nuts and lockwashers from radius
rod pins at both ends, then remove radius rod
pin support on right end and remove radius
rod frame bracket brace on left end of rod.
Remove rod and bushings from pins.
b. Correction of Trim
If trim dimension "A" is not within specified
limits the weak spring should be replaced, In
each case new spring installation should not
increase spring dimension "A" more than 1"
over limits given above,
6-21
REPLACEM ENT O
F
CHASSIS REAR
SPRINGS
d. Use of Special Overload Rear Springs
Special rear springs are available in 200
pound and 500 pound overload capacities, for
use with heavy trailers or for heavy loads in the
rear compartment. In estimating rear spring
overloads, place rear wheels of car on scale,
with car at curb weight and no load in rear
compartment other than spare wheel and
tire.
After obtaining weight, hook trailer to car, or
place desired load in rear compartment, and
read scale again, The additional weight is the
amount of overload on springs and rear axle,
It is not recommended that any series rear
axle be overloaded in excess of 500 pounds.
Trailer design and distance trailer coupling
is located to rear of rear axle center line, are
the major factors governing effective trailer
overload. Instructions for attaching trailers to
Buick cars may be obtained from Buick Motor
Division Factory Service Department.
1. Disconnect links from rear shock absorber
arms.
2. Hoist rear end of car until all load is off
rear springs and place floor stands under frame
for safety.
3. Remove bolts and clamps at lower and
upper ends of spring and remove spring. The
lower bolts have left hand threads.
4. Before installation of new spring, check
the part number stamped on one end coil to
make
sure
that
spring
is correct for the car
c. Use of Optional High or Export Rear
Springs
For special requirements, when excessive bot-
toming occurs on regular springs with normal
loads, it is advisable to install optional high or
export springs, which have a higher rate than
the regular springs. Shock absorber calibra-
tions need not be changed upon installation of
optional high springs; however, the ride and
handling will be improved by using the rear
shock absorber calibrations specified for op-
tional high or export springs (par. 6-1).
Advertisement
