Single PTO Transmission Service Units built with Dual (4-Bolt) PTO Rear Housings

Date: January 16, 2024

Updated:

Issue Description:

Some Single PTO transmission service units are built with Dual (4-Bolt) PTO Rear Housings. These units are based on a Single PTO model and do not include the internal components to support 4-Bolt PTO operation. If a 4-Bolt PTO is installed, PTO and/or transmission component damage will occur.

Single PTO and Dual (4-Bolt) PTO Rear Housing identification:

Affected Models/Population:

Endurant HD Single PTO Transmission Service Units:

Field Strategy:

Refer to TRSM0950 Transmission Service Unit, Reman or Complete, Part Number Identification to determine the correct Single PTO or Dual PTO transmission service unit part number.

Locate transmission tag on clutch housing and record TN#. If the transmission tag indicates TN-H04-75RR or TN-H04-12R and the rear housing is equipped with a 4-Bolt PTO opening, do not install a 4-Bolt PTO.

TN-H04-75RR transmission tag example:

TN-H04-12R transmission tag example:

Transmission tag location:

Warranty Information:

Warranty coverage is not provided for component damage resulting from installing a 4-Bolt PTO on a TN-H04-12R or TN-H04-75RR, Single PTO transmission service unit equipped with a Dual PTO Rear Housing.

The material contained in this bulletin is product improvement information. Eaton Corporation is not committed to, or liable for, canvassing existing products.

FSUD: 4593