Canada - Body/Frame - Choppy Ride Under Various Conditions

Bulletin
TSB3502

Issue Date
December 2, 2010

Market
Canada

Title
CHOPPY RIDE (DOUBLE CAB - STANDARD BED)

Component
REAR SUSPENSION

Models
'07-'10 Tundra

INTRODUCTION:

Some 2007 - 2010 Tundra vehicles may exhibit a body vibration when driving under certain road conditions. A newly designed cab mount has been developed to help improve this condition.







NOTE:
The Tundra performs similarly to other long wheelbase trucks on choppy, broken concrete surfaces. The enhanced cab mounts of this TSB reduce the amplitude of body vibrations caused by uneven road surfaces, but they do NOT eliminate the sensation entirely. Customers should be counselled that they will experience an improvement in the condition but some body shake is a normal and unavoidable condition in certain situations with this type of vehicle. Reducing speed by as little as 8km/h (5 mph) has a considerable positive effect in reducing body vibration.






APPLICABILITY:






WARRANTY INFORMATION:






PARTS INFORMATION:

REPAIR PROCEDURE:
1. Test drive the vehicle and confirm the condition.

NOTE:
Repeat remaining steps for both No. 3 cab mounts.







2. Loosen the No. 2 cab mount nuts (at front of cab) down to the last thread on the long bolt. This is necessary to allow the cab to be raised to remove the No. 3 mount.












3. Loosen and remove the No. 3 cab mount nut on the bottom of each cab mount.







4. Loosen and remove the two bolts on top of each of the cab mounts and save them for reuse.







5. Pull the carpet back in the rear of the cab and remove the body plugs to expose the cab mount bolts.







6. Remove the cab mount bolts by pulling them through the hole and discard. New bolts will be used in their place.












7. Raise the back of the cab from the pinch welds high enough to remove the No. 3 cab mounts.







8. With the cab still raised, install the new No. 3 cab mounts.







9. Install the two bolts on top that were previously removed from the No. 3 cab mount and torque to specification.
Torque: 61 N-m (622 kgf-cm, 45 ft-lbf)







10. Lower the cab back onto the No. 3 cab mount.







11. Install the new bolt through the No. 3 cab mount and install the large washer and NEW nut and torque to specifications.
Torque: 54 N-m (551 kgf-cm, 40 ft-lbf)







12. Torque the nuts to the specified torque range on the No. 2 mounts.
Torque: 54 N-m (551 kgf-cm, 40 ft-lbf)







13. Reinstall the body plugs for the cab mount bolt holes and then the carpet.
14. Test drive vehicle to confirm the condition has improved.

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.