DOOR GP-ACCESS 1174311 - Caterpillar

The information supplied in this service letter may not be valid after the termination date of this program.Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
TERMINATION DATE
31Oct2020
PROBLEM
The existing fuel pump mounting nuts can be loose on certain 336 Excavators. If the existing fuel pump mounting nut torques are found to be low it can potentially cause future front gear train problems due to misalignment.
AFFECTED PRODUCT
Model Identification Number
336 JHD00157-00170, 173-183, 185-186, 188-192
YBN00151, 154
PARTS NEEDED
No parts needed for this program
ACTION REQUIRED
Check the four fuel pump mounting nut torque values. Verify they are properly torqued to 55+/-10Nm. Fuel pump mounting nut locations are shown in the Images below.
Image1
Image2
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-3000 hrs,
0-36 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 1.0-hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.