LeSabre V6-231 3.8L VIN 3 SFI (1988)
Clutch: All Technical Service Bulletins
A/T - Revised Bearing and Clutch (Increases Lubrication)
Bulletin:
90-7440-10
Date:
Apr. '90
Ref. No.: 90-114-7440
Corp. Ref. No.: 077111R
SUBJECT:
(NEW OUTPUT SHAFT/BEARING AND 3RD ROLLER CLUTCH ASSEMBLY FOR INCREASED LUBRICATION FLOW
MODELS AFFECTED:
1988-90 VEHICLES EQUIPPED WITH HYDRA-MATIC 4T60 (THM 440T4) TRANSAXLES
Figure 1 - Previous And New Output Shaft/Bearing
Figure 2
BULLETIN COVERS: (Figures 1 and 2)
New output shaft/bearing and 3rd roller clutch assembly for increased lubricant flow. The new parts were designed to help keep the 3rd roller clutch and
input sprag assemblies running cooler when overrunning. For this change to be implemented, the following parts were modified:
-
The new output shaft bearing with only a single row of needle bearings instead of a double row. (Figure 1) This makes for an easier path for the oil
flow to the 3rd roller clutch and input sprag assemblies.