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nonissan
01-31-2003, 05:29 PM
can anybody help me out? the steering wheel shakes at about ???(no spedometer)mph, i'm guessing around 55. i know this is a common problem, so could somebody point me in the right direction for some information? there is no play when i jiggle the wheel while it is jacked up. the tires are pretty new, so i'm assuming they are balanced. so, what the dilly-yo???

Stan-O
01-31-2003, 05:51 PM
i have the same problem, i bought new T/C rods with wehiteline bushings, and New Tie Rod Ends, between the two, it should take care of the shimmy, but the shimmy could be either or. That is if your wheels are balanced

Stan-O

nonissan
01-31-2003, 05:56 PM
thanks, i just found a bunch of stuff on zilvia.net

asad
01-31-2003, 05:58 PM
There is a Nissan TSB regarding wheel shimmy. It outlines the procedures to test and if the shimmy still occurs to replace the steering rack tension spring. I'm looking for the TSB but I haven't found it yet. I'll post it when I find it.

Asad

asad
01-31-2003, 06:00 PM
Ah, found it in an old email:

Steering Wheel Shimmy
Classification:
ST93-002

Section:
Steering

Reference:
TECHNICAL BULLETIN NTB93-066

Models:
All 240SX(S13)

Date:
April 1, 1993

240SX(S13) STEERING WHEEL SHIMMY

APPLIED MODELS:
All Model Year 240SX(S13)

APPLIED VIN; HICAS; DATE:
JN1HS34N(*)W300146 - Coupe; HICAS=no; 6/4/92
JN1HS36N(*)W300198 - H/B; HICAS=no; 6/4/92
JN1HS34N(*)W300384 - H/B; HICAS=Yes; 6/12/92.
JN3HS - Convt.; HICAS=no;.

SERVICE INFORMATION:
Some owners of 240SX vehicles built before the Applied VIN may complain
about steering wheel shimmy while driving at approximately 55 mph. The
wheel
shimmy complaint can usually be resolved by balancing the front tires.
However, in those cases where the complaint is not resolved by this
repair,
adjustment of the steering rack friction may be necessary.

SERVICE PROCEDURE:1. Road test vehicle to verify that the customer's
complaint is steering wheel shimmy [slight rotational vibration of the
steering wheel at approximately 55 mph] and that it occurs without
braking.

2. Verify that the steering rack, rods, and joints are secure and the
steering system is within specification.

3. Balance the front tires with an on-car balancer, if available;
otherwise,
use a calibrated off-car dynamic balancer.

4. Perform another road test of vehicle. If shimmy is not resolved, it
will
be necessary to adjust the steering rack friction.

5. Remove the steering rack adjusting screw. Clean the adjusting nut of
any
remaining locking sealant. Reassemble the lock nut to the adjusting
screw
with the lock nut backed off fully.

6. Replace the spring with P/N 48237-10V02. This is a direct
replacement,
original-equipment part. Be sure the spring washers remain in place, in
the
same orientation.

7. Coat the adjusting screw with Loctite 272 Threadlocker or equivalent
and
screw into the rack. Tighten the lock nut finger-tight.

8. Torque the adjusting screw to 43-52 inch-pounds.

9. Loosen the adjusting screw, then, lightly tighten by hand.
NOTE:
The actual torque value for this screw is 0.43 to 1.74 inch-pounds.

10. Move the rack through its full travel, left and right, several
times.

11. Center the rack in the "straight-ahead" position. With road wheels
off
the ground, turn the steering wheel a half turn in each direction to
find
the maximum friction spot. Stop at the maximum friction spot.

12. Loosen the adjusting screw, then torque screw to 43-52 inch-pounds.

13. Loosen the adjusting screw approximately 40 degrees (just shy of
1/8
turn).

14. Prevent movement of the adjusting screw and torque the lock nut to
29-52
inch-pounds.

15. Test drive on a level road to verify that the steering wheel
returns to
center when the steering wheel is released from a turn (approximately
20
degrees). Also, verify that the steering shimmy was corrected by
driving on
the road surface where the incident was diagnosed.

16. If less pre-load is needed (to achieve steering wheel
return-to-center
after a turn)- based upon the results of the test drive detailed in
Step 15,
you may loosen the pre-load position of the adjusting screw, up to the
90
degree position.


Or, if more pre-load is needed to reduce shimmy, you may tighten the
adjusting nut up to the 20 degree position.

NOTE:
The pre-load range of adjustment is 20-90 degrees loose, from the
baseline
established at Step 11.

17. Road test, again, to confirm shimmy complaint is resolved and
steering
wheel will return to center after a turn.

18. If the above procedure is not successful, please call the FIXS
Hotline
for assistance.


PARTS INFORMATION:

NOTE
This is a standard replacement part number; it is not a
countermeasure/revised part.

Part Description Free Length Part Number
Spring-Retainer 27.9 mm 48237-10V02

sheadee240
05-15-2003, 01:55 AM
ASAD-

Thanks for the TSB

I have been battleing a similar problem with my S14. My car shimmies at various speeds above 55 particularly 65. I have Whiteline polyurethane T/C rod bushings and LCA bushings new struts and mounts, new tie rod ends new tires which I re-balanced just to be sure and no noticable front end slop. It sounds like just trying to use the adjustment on the box might be my best bet anyone have any input for the S14? I've noticed that it seems to get much worse when applying the brakes while turning slightly at speed such as when taking off ramps at 60 mph and lightly applying the brakes.



Ah, found it in an old email:

Steering Wheel Shimmy
Classification:
ST93-002

Section:
Steering

Reference:
TECHNICAL BULLETIN NTB93-066

Models:
All 240SX(S13)

Date:
April 1, 1993

240SX(S13) STEERING WHEEL SHIMMY

APPLIED MODELS:
All Model Year 240SX(S13)

APPLIED VIN; HICAS; DATE:
JN1HS34N(*)W300146 - Coupe; HICAS=no; 6/4/92
JN1HS36N(*)W300198 - H/B; HICAS=no; 6/4/92
JN1HS34N(*)W300384 - H/B; HICAS=Yes; 6/12/92.
JN3HS - Convt.; HICAS=no;.

SERVICE INFORMATION:
Some owners of 240SX vehicles built before the Applied VIN may complain
about steering wheel shimmy while driving at approximately 55 mph. The
wheel
shimmy complaint can usually be resolved by balancing the front tires.
However, in those cases where the complaint is not resolved by this
repair,
adjustment of the steering rack friction may be necessary.

SERVICE PROCEDURE:1. Road test vehicle to verify that the customer's
complaint is steering wheel shimmy [slight rotational vibration of the
steering wheel at approximately 55 mph] and that it occurs without
braking.

2. Verify that the steering rack, rods, and joints are secure and the
steering system is within specification.

3. Balance the front tires with an on-car balancer, if available;
otherwise,
use a calibrated off-car dynamic balancer.

4. Perform another road test of vehicle. If shimmy is not resolved, it
will
be necessary to adjust the steering rack friction.

5. Remove the steering rack adjusting screw. Clean the adjusting nut of
any
remaining locking sealant. Reassemble the lock nut to the adjusting
screw
with the lock nut backed off fully.

6. Replace the spring with P/N 48237-10V02. This is a direct
replacement,
original-equipment part. Be sure the spring washers remain in place, in
the
same orientation.

7. Coat the adjusting screw with Loctite 272 Threadlocker or equivalent
and
screw into the rack. Tighten the lock nut finger-tight.

8. Torque the adjusting screw to 43-52 inch-pounds.

9. Loosen the adjusting screw, then, lightly tighten by hand.
NOTE:
The actual torque value for this screw is 0.43 to 1.74 inch-pounds.

10. Move the rack through its full travel, left and right, several
times.

11. Center the rack in the "straight-ahead" position. With road wheels
off
the ground, turn the steering wheel a half turn in each direction to
find
the maximum friction spot. Stop at the maximum friction spot.

12. Loosen the adjusting screw, then torque screw to 43-52 inch-pounds.

13. Loosen the adjusting screw approximately 40 degrees (just shy of
1/8
turn).

14. Prevent movement of the adjusting screw and torque the lock nut to
29-52
inch-pounds.

15. Test drive on a level road to verify that the steering wheel
returns to
center when the steering wheel is released from a turn (approximately
20
degrees). Also, verify that the steering shimmy was corrected by
driving on
the road surface where the incident was diagnosed.

16. If less pre-load is needed (to achieve steering wheel
return-to-center
after a turn)- based upon the results of the test drive detailed in
Step 15,
you may loosen the pre-load position of the adjusting screw, up to the
90
degree position.


Or, if more pre-load is needed to reduce shimmy, you may tighten the
adjusting nut up to the 20 degree position.

NOTE:
The pre-load range of adjustment is 20-90 degrees loose, from the
baseline
established at Step 11.

17. Road test, again, to confirm shimmy complaint is resolved and
steering
wheel will return to center after a turn.

18. If the above procedure is not successful, please call the FIXS
Hotline
for assistance.


PARTS INFORMATION:

NOTE
This is a standard replacement part number; it is not a
countermeasure/revised part.

Part Description Free Length Part Number
Spring-Retainer 27.9 mm 48237-10V02