Chrysler 300M, Dodge Interpid. Manual — part 14
(7) Remove brake caliper assembly from steering
knuckle and brake rotor. Refer to the Brakes. Sup-
port caliper assembly by hanging it from frame of
vehicle with wire or some other method (Fig. 59). Do
not let caliper assembly hang by brake hose.
(8) Remove brake rotor from hub.
CAUTION: The strut assembly to steering knuckle
bolts are serrated were they go through strut
assembly and steering knuckle. When removing
bolts, turn nuts off bolts DO NOT TURN BOLTS IN
STEERING KNUCKLE. If bolts are turned damage to
steering knuckle will result.
(9) Remove the 2 strut assembly to steering
knuckle attaching bolts (Fig. 60).
(10) Remove the 4 strut assembly upper mount to
strut tower mounting nut and washer assemblies
(Fig. 61).
(11) Remove the strut assembly from the vehicle.
(12) For disassembly of the strut assembly, refer to
Disassembly.
DISASSEMBLY - STRUT ASSEMBLY (FRONT)
The Strut assembly must be removed from the
vehicle for it to be disassembled and assembled.
Refer to Removal in this section.
For the disassembly and assembly of the strut
assembly, use strut spring compressor, Pentastar Ser-
vice Equipment (PSE) tool W-7200, or the equivalent,
to compress the coil spring. Follow the manufactur-
er’s instructions closely.
Fig. 59 Caliper Supported
1 - WIRE HANGER
2 - FLEXIBLE BRAKE HOSE
3 - BRAKING DISC
4 - CALIPER ASSEMBLY
5 - STEERING KNUCKLE
Fig. 60 Strut To Steering Knuckle Attaching Bolts
1 - STRUT ASSEMBLY
2 - NUTS
3 - STRUT ASSEMBLY TO STEERING KNUCKLE ATTACHING
BOLTS
4 - STEERING KNUCKLE
Fig. 61 Strut Assembly Mounting
1 - STRUT ASSEMBLY MOUNTING NUTS
2 - SHOCK TOWER
3 - STRUT MOUNT
LH
FRONT SUSPENSION
2 - 25
STRUT (Continued)
WARNING: DO NOT REMOVE THE STRUT ASSEM-
BLY’S SHAFT NUT AT ANY TIME UNLESS THE COIL
SPRING
HAS
BEEN
PROPERLY
COMPRESSED
FOLLOWING THE PROCEDURE LISTED HERE.
(1) If both struts are being serviced at the same
time, mark the coil spring and strut assembly accord-
ing to which side of the vehicle the strut was
removed from, and which strut the coil spring was
removed from.
(2) Position the strut assembly in the strut coil
spring
compressor
following
the
manufacturers
instructions (Fig. 62). The strut clevis bracket should
be positioned outward. It will be necessary to turn
the strut assembly so the steering arm will clear the
compressor arm. Position the upper and lower hooks
on the coil spring, then place a clamp on the lower
end of the coil spring, so the strut is held in place
once the strut shaft nut is removed (Fig. 62).
WARNING: DO NOT REMOVE THE STRUT SHAFT
NUT BEFORE THE COIL SPRING IS COMPRESSED.
THE COIL SPRING IS HELD UNDER PRESSURE
AND MUST BE COMPRESSED, REMOVING SPRING
TENSION FROM THE UPPER MOUNT AND PIVOT
BEARING, BEFORE THE SHAFT NUT IS REMOVED.
(3) Compress the coil spring until all coil spring
tension is removed from the upper mount.
(4) Install Strut Nut Socket, Special Tool 6864, on
the strut shaft retaining nut (Fig. 63). Next, install a
socket on the hex on the end of the strut shaft. While
holding the strut shaft from turning, remove the nut
from the strut shaft.
(5) Remove the upper mount from the strut shaft.
(6) Remove the clamp from the bottom of the coil
spring and remove the strut out through the bottom
of the coil spring.
NOTE: If the seat and bearing, upper spring isola-
tor, dust boot, or coil spring need to be serviced,
proceed with the next step, otherwise, proceed with
step 9.
NOTE: Before removal of the seat and bearing from
the spring, note the flat on the inboard side of the
seat and bearing outer perimeter. This must align
with the inboard side of the strut (or rear of the cle-
vis bracket) on reassembly. Also note the coil
spring ending at the stop built into the seat and
upper isolator.
(7) Remove the seat and bearing, upper spring iso-
lator and dust shield as an assembly from the top of
the coil spring by pulling them straight up. They can
be separated once removed from the vehicle. The
Fig. 62 Strut Assembly In Compressor
1 - HOOKS
2 - STRUT ASSEMBLY
3 - CLAMP
4 - COIL SPRING
Fig. 63 Shaft Nut Removal/Installation
1 - SPRING COMPRESSOR
2 - SPECIAL TOOL 6864
3 - UPPER MOUNT
2 - 26
FRONT SUSPENSION
LH
STRUT (Continued)
jounce bumper cup may also come off when the
assembly is removed. Check inside the dust shield.
NOTE: Before releasing the tension on the coil
spring, note the position of the coil end on the
upper end of the coil spring. When reistalled, it
must be positioned in the same spot for proper
alignment of the seat and bearing, and the strut.
(8) Release the tension from the coil spring by
backing off the compressor drive fully. Push back the
compressor hooks and remove the coil spring.
(9) Remove the jounce bumper cup and jounce
bumper from the strut shaft by pulling each straight
up and off the strut shaft (Fig. 64). If the jounce
bumper cup is not present, check inside the dust
shield. It may have stayed inside the dust shield.
(10) Remove the lower spring isolator from the
lower spring seat on the strut (Fig. 65).
(11) Inspect the strut assembly components for the
following and replace as necessary:
• Inspect the strut for any condition of shaft bind-
ing over the full stroke of the shaft.
• Inspect the jounce bumper for cracks and signs
of deterioration.
• Check the upper mount for cracks and distortion
and its retaining studs for any sign of damage.
• Check the upper seat and bearing for cracks and
distortion.
• Check for binding of the seat and bearing pivot
bearing.
• Inspect the dust shield for rips and deteriora-
tion.
• Inspect the upper and lower spring isolators for
material deterioration.
• Inspect the coil spring for any sign of damage to
the coating.
ASSEMBLY - STRUT ASSEMBLY (FRONT)
For the disassembly and assembly of the strut
assembly, use strut spring compressor, Pentastar Ser-
vice Equipment (PSE) tool W-7200, or the equivalent,
to compress the coil spring. Follow the manufactur-
er’s instructions closely.
NOTE: If the coil spring has been removed from the
spring compressor, proceed with the next step, oth-
erwise, proceed with step 5.
(1) Place the coil spring in the compressor follow-
ing the manufacturers instructions (Fig. 62). Before
compressing the spring, rotate the spring to the posi-
tion noted in the note between steps 7 and 8.
(2) If disassembled, reinstall the upper spring iso-
lator and dust shield on seat and bearing. Match the
step in the isolator with the step in the seat and
bearing.
(3) Install the seat and bearing (with dust shield
attached) on top of the coil spring. Position the step
Fig. 64 Strut Assembly Components
1 - SEAT AND BEARING
2 - DUST SHIELD
3 - CUP
4 - LOWER SPRING ISOLATOR
5 - STRUT
6 - JOUNCE BUMPER
7 - COIL SPRING
8 - UPPER SPRING ISOLATOR
9 - UPPER MOUNT
Fig. 65 Lower Spring Isolator
1 - LOWER SPRING ISOLATOR
2 - LOWER SPRING SEAT
LH
FRONT SUSPENSION
2 - 27
STRUT (Continued)
built into the seat and upper spring isolator against
the coil end of the coil spring.
(4) Install the lower spring isolator on the lower
spring seat of the strut (Fig. 65). The tabs on the iso-
lator will align it on the strut spring seat. They
straddle the expanded area of the lower spring seat
on the strut.
(5) Install the jounce bumper on the strut shaft.
The jounce bumper is to be installed with the smaller
end pointing downward toward the lower seat (Fig.
64).
(6) Install the jounce bumper cup (Fig. 64) on the
strut shaft. The cupped side goes on first.
(7) Install the strut through the bottom of the coil
spring until the lower spring seat contacts the lower
end of the coil spring. The inboard side of the strut
(or rear of the clevis bracket) should align with the
flat on the inboard side of the seat and bearing outer
perimeter. Install the clamp on the lower end of the
coil spring and strut, so the strut is held in place
(Fig. 62).
CAUTION: Before installing the upper mount, make
sure the correct upper mount is being installed on
the strut. DO NOT install a right mount on a left
front strut or a left mount on a right front strut.
Incorrect mount installation may cause poor vehicle
ride and steering feel, and excessive front end
noise. A lead or drift condition may also be the
result. Left and right mounts look similar, but are
different from one another. Looking down at the top
of the upper mount, 2 tabs can be seen, (Fig. 66)
and (Fig. 67), down inside the mount center well. A
rectangular hole can be seen on the edge of the
mount mounting surface (Fig. 66) and (Fig. 67). This
is always in the 10 o’clock position when observing
rubber tab positioning, whether a left or right mount
is being observed. Once this hole is located in the
10 o’clock position, the tabs should be in the posi-
tions as shown (Fig. 66) and (Fig. 67). The right
upper mount should also have a white dot painted
on its mounting face.
(8) Install the strut upper mount over the strut
shaft and onto the top of the seat and bearing.
Loosely install the retaining nut on the strut shaft.
(9) Install Strut Nut Socket (on the end of a torque
wrench), Special Tool 6864, on the strut shaft retain-
ing nut (Fig. 63). Next, install a socket on the hex on
the end of the strut shaft. While holding the strut
shaft from turning, tighten the strut shaft retaining
nut to a torque of 94 N·m (70 ft. lbs.).
(10) Slowly release the tension from the coil spring
by backing off the compressor drive fully. As the ten-
sion is relieved, make sure the upper mount and seat
and bearing align properly. Verify the upper mount
does not bind.
(11) Remove the clamp from the lower end of the
coil spring and strut. Push back the spring compres-
sor upper and lower hooks, then remove the strut
assembly from the spring compressor.
(12) Install the strut assembly on the vehicle.
Refer to INSTALLATION in this section.
INSTALLATION - STRUT ASSEMBLY (FRONT)
(1) Install front strut assembly into shock tower.
Install the 4 strut assembly upper mount to shock
tower attaching nuts (Fig. 61). Tighten the 4 strut
mount to strut tower attaching nuts to a torque of 37
N·m (28 ft. lbs.) torque.
(2) Position steering knuckle into strut assembly.
Fig. 66 Left
1 - NOTCH
2 - RUBBER TABS
3 - OUTBOARD STRUT COIL SPRING SEAT
4 - STEERING ARM
Fig. 67 Right Front Strut Upper Mount
1 - NOTCH
2 - STEERING ARM
3 - OUTBOARD STRUT COIL SPRING SEAT
4 - RUBBER TABS
2 - 28
FRONT SUSPENSION
LH
STRUT (Continued)
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