LeSabre V6-181 3.0L (1986)
Transmission Temperature Sensor/Switch: Technical Service Bulletins
A/T - New Thermo Element/Setting Procedure
Bulletin 91-74T60-8
Date Jan. '91
Ref No. 91-087-74T60
Corp. Ref. No. 077152
SUBJECT:
NEW THERMO ELEMENT AND THERMO ELEMENT PIN HEIGHT SETTING PROCEDURE ON ALL 1984-91 VEHICLES WITH
4T60 AND 4T60-E TRANSAXLES
MODELS AFFECTED: 1984-91 CENTURY 1985-91 ELECTRA/PARK AVENUE 1986-91 LESABRE AND RIVIERA 1988-91 REGAL AND
REATTA
BULLETIN COVERS:(Figure 1)
A view thermo element that contains an additional open slot (instead of a hole) so the element can be installed after setting the height of both pins.
Installing the thermo element after setting the height of both pins could help reduce the potential for damage, which can change the cold-to-hot fluid level
calibration during the installation. This will help prevent durability concerns associated with incorrect fluid levels. The new thermo element can be used
on all previous model Hydra-Matic 4T60 transaxles.
IMPORTANT:
When reading the fluid level indicator, check both sides to ensure the reading is accurate and not a false reading caused by the rotating parts splashing
fluid onto the indicator. A false reading could show a low reading on the indicator when, in fact, the true fluid level is below the end of the indicator.
SERVICE PROCEDURE:
(Figures 1 and 2)
Figure 1 - Thermo Element
Figure 2 - Thermo Element Installation
