WRENCH-TORQUE 4C6194 - Caterpillar

This Revised Service Letter replaces the 15Sep2008 (Revised 24Sep2008) Service Letter. Changes have been made to the Termination Date and Affected Product.
TERMINATION DATE
30Sep2011
PROBLEM
A population of 735 and 740 Articulated Trucks could contain loose brake anchor bolts. If the brake anchor bolts are loose, there may be a leak. Tightening the bolts to the proper torque will solve the current problem.
AFFECTED PRODUCT
Model Identification Number
735 B1N00840-01366
740 B1P02240-05566
740 OEM DTX00104-00253
740EJ B1R00309-00522
PARTS NEEDED
No parts needed for this program
ACTION REQUIRED
Tighten the 6V-8336 Brake Anchor Bolts to a torque of 100 +/- 20 Nm (75 +/- 15 ft-lbs). The brake anchor bolts are part of the 217-6309 Brake Group. (Refer to Image 1 below.)
Refer to the attached Rework Procedure on how to remove the guards on the front and center axle.
Image1
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-2000 hrs,
0-30 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 3.0-hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
1) Remove the guards on the front and center axle. Clean the dirt and debris from the brake anchor bolts. (Refer to Image 1.1.1)
2) Mark the start position when carrying out this procedure. Set the torque wrench to the static torque specification of 80 Nm. Check each bolt, if any bolt moves while performing this check then torque each bolt to 100 +/- 20 Nm. (Refer to Image 1 above in the Action Required)
3) Reinstall the brake guards.
Image1.1.1