One of the more-frequently asked questions in calls ATSG receives regarding the Subaru 4AT Phase 2 transmission is, “Where do the leaf springs go for the 2/4-clutch and low/reverse-clutch-pack stack-up?” Figures 1 and 2 show the position and configuration for the 2/4 pack, and figures 3 and 4 show the low/reverse pack.
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.