Noise From the Power Train May Be Noticed in Certain 700 C-Series Articulated Trucks {3264, 4801} Caterpillar

Articulated Truck

725C2 (S/N: 2T31-UP; 2L61-UP)

730C (S/N: LFF1-UP; TFF1-UP)

730C EJECTOR (S/N: LFH1-UP; TFH1-UP)

730C2 (S/N: 2T41-UP; 2L71-UP)

730C2 EJ (S/N: 2T51-UP; 2L81-UP)

735C (S/N: LFJ1-UP; TFJ1-UP)

740C EJECTOR (S/N: LFN1-UP; TFN1-UP)

745C (S/N: LFK1-UP; TFK1-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

Operators have been concerned by noise from the power trains of the listed machines. There is the potential for unnecessary maintenance work to be conducted. This Technical Information Bulletin identifies one source of noise from the power train that is under investigation.

The noise can be generated by operation of the Automatic Traction Control (ATC). The power train can make a noise when there is partial engagement of the cross axle differential locks (XAD). There is no indication the noise is detrimental to the operation of the machine.

Solution

Currently, there is no solution for the noise. The root cause for the noise being generated is under investigation.

Do not perform any troubleshooting or removal of components to try to eliminate the noise until investigation concludes the cause of the noise.

Any loss of function of the Automatic Traction Control (ATC), must be investigated normally. Any indications of wear found during periodic SOS samples, must be investigated normally.