Transmission Oil Pump - Disassembly

DISASSEMBLY










1. Remove the bolts holding the reaction shaft support (4) to the oil pump.
2. Remove the reaction shaft support (4) from the oil pump.
3. Remove all bolts holding the oil pump halves together.
4. Using suitable prying tools, separate the oil pump sections by inserting the tools in the supplied areas and prying the halves apart.

NOTE: The oil pump halves are aligned to each other through the use of two dowels. Be sure to pry upward evenly to prevent damage to the oil pump components.











5. Remove the screws (7) holding the separator plate (1) onto the oil pump housing (4).
6. Remove the separator plate (1) from the oil pump housing (4).
7. Mark all gears for location. The gears are select fit and if the oil pump is to be reused, the gears must be returned to their original locations.
8. Remove the oil pump flapper valve (3) from its pocket in the pump housing.
9. Remove the oil pump gears (2, 6) from the oil pump housing (4).










10. Remove the oil pump valve retainers (1) and TCC Switch Valve (2) and spring one at a time. Mark the combination of components as a group and tag them as to the location from which they were removed.










11. Remove the T/C regulator valve (1), T/C limit valve (2), and main regulator valve (3).