LeSabre V6-181 3.0L (1986)
NOTICE:
Measure the press in depth for the dam as shown in Figure 3. Measuring from the top of the 3rd roller clutch race to the dam will be
inaccurate because all the machining of the 3rd roller clutch race is based on the opposite side (side that mates to the input sprag). If the
dam is pressed in too far or not far enough, it could rub on the 3rd roller clutch cage or the snap ring that retains the 3rd clutch return
spring and create excess heat to distress the cage of the 3rd roller clutch.
12.
Line Pressure: Lubrication fluid is proportional to line pressure. If the line pressure is below specification, then lubrication fluid flow could be
inadequate. Check the line pressure as outlined in the service manual.
13.
Check the converter clutch regulator valve for proper operation, binding, sediment or damage. This valve controls the flow of lubrication - when
the torque converter clutch (TCC) is applied, lubrication fluid from the pump pressure regulator is routed past the torque converter directly to the
cooler; when TCC is not applied, the fluid is routed through the converter, then to the cooler. If the valve is damaged, a new valve is included in
service package 8646934 - use only the convertor clutch regulator valve from this package.
SERVICE PARTS INFORMATION:
Part
Number
Description
Usage
8646934
Package, Valve Body Spacey, Plate Convertor
All 1984-1991 4T60
Clutch Regulator Valve and Spring
(THM 440T4) Models
IMPORTANT:
USE ONLY THE CONVERTOR CLUTCH REGULATOR VALVE FROM THE PACKAGE.
Parts are currently available from GMSPO.
