68RFE Reverse Drum Saver
The kit features G3 Friction Clutches and the Alto Pocket Plate.
Direct Clutch Drum & Shaft Kit
Sonnax’s new direct clutch drum ad shaft kit for AODE/4R70W transmissions.
Solenoid Control in the TF60-SN (09G/09K/09M)
Starting with a few four-speed automatic transmissions, increasing with the five-speeds and more so with units having six or more speeds, it is interesting to see the use of counterbalance pistons in clutch drums that drive the planetary system. Since drive-style clutches are rotational, there is a tendency for centrifugal force to creep the clutch on when it is not in use, which could cause premature damage to the frictions.
Orbiting Saturn
The problem here is in the assembly of the 1st-clutch drum. At first glance, all four of the piston-return-spring assemblies look identical (see Figure 1). Each caged assembly contains 16 springs and has an average overall height of 1.170 inches. The size and configuration of the spring cage allow for these assemblies to be interchanged among drums.
