SEGMENT 6T7455 - Caterpillar

PARTS NEEDED
Qty
Part Number Description
2 3424640 BEARING-ALIGNING (After Failure Only)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 15% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.
ACTION REQUIRED
Refer to the attached Rework Procedure.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-8000 hrs,
0-24 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 1.0-hour job
Note: If the inspection reveals a non-conforming bearing an additional 6.0 hrs of labor per suspension group and up to two bearings per suspension group can be charged to this Service Letter program.
Note: Bearing pictures must be submitted with claim and SIMS entry.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
Note: Ensure that all safety information, warnings, and instructions are read and understood before any operation or any maintenance procedures are performed. Refer to the Operation and Maintenance Manual "Safety Section".
Refer to the Service Manual if/as necessary.
You may have a rear suspension group bearing or bearings (up to four) missing the lubrication groove. A test has been devised to determine if the bearings are missing the lubrication groove without removing the suspension groups.
Refer to Images1.1.1 and 1.1.2.
Image1.1.1
Image1.1.2
1. If your truck has autolube, remove the auto lube lines from the upper and lower pins on both suspension groups. Attach a grease zerk to the pins if needed. A manual grease gun is required to perform the test. Refer to Image1.2.1.
Image1.2.1
2. Attach a grease gun to each pin and pump grease in 4-5 times. Refer to Image1.3.1.
Image1.3.1
- A good bearing will be easier to grease. There may be a slight amount of grease buildup found at the other end of the bearing as seen in Image1.4.1 below:
Image1.4.1
- A bad bearing will exhibit some resistance while pumping grease. There should be a noticeable buildup of grease at the opposite end of the bearing as seen in Image1.5.1. below:
Image1.5.1