Pump Assembly: Disassembly

WARNING: This page is about a different car, the 2012 Ford F550 Super Duty and 2012 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Using the Bushing Remover and Slide Hammer, remove and discard the front pump seal.

Fig 1: Removing Front Pump Seal
Courtesy of FORD MOTOR CO.
Remove and discard the pump stator support seal.

Fig 2: Removing Pump Stator Support Seal
Courtesy of FORD MOTOR CO.
Remove and discard the 2 seals.

Fig 3: Locating Seals
Courtesy of FORD MOTOR CO.
Remove and discard the pump outer diameter square-cut front pump seal.

Fig 4: Locating Pump Outer Diameter Square-Cut Pump Seal
Courtesy of FORD MOTOR CO.

NOTE: Note the location of the bolts for assembly.

Fig 5: Locating Overdrive Piston Return Spring

Courtesy of FORD MOTOR CO.

Remove the Overdrive (O/D) piston return spring.
Remove and discard the O/D piston.

Fig 6: Locating Overdrive Piston
Courtesy of FORD MOTOR CO.
Remove bolts and separate the pump control body from the pump gear body.

Fig 7: Locating Pump Control Body Bolts
Courtesy of FORD MOTOR CO.

NOTE: If the pump gears or plate show any signs of wear or scoring, a new pump assembly must be installed.

Fig 8: Locating Plate

Courtesy of FORD MOTOR CO.

Remove and inspect the plate.

NOTE: Do not remove the stator support from the control body. This can distort the surface of the control body.

Remove the converter clutch control valve, cooler bypass valve and thermostat valve, converter pressure limit valve, converter anti-drain back valve and the main regulator valve.
1. Remove the retainer clip with a small screwdriver, then remove the main regulator plug, spring and valve.
2. Remove the retainer clip with a small screwdriver, then remove the converter anti-drain back plug, spring and valve.
3. Remove the retainer clip with a small screwdriver, then remove the converter pressure limit plug, spring and valve.
4. Remove the retainer clip with a small screwdriver, then remove the thermostat plug, spring and valve.
5. Remove the cooler bypass valve.
6. Remove the retainer clip with a small magnet or pliers, then remove the converter clutch control plug with shuttle valve, spring retainer and valve.
  
  Fig 9: Identifying Converter Clutch Control Plug With Shuttle Valve, Spring Retainer And Valve
  Courtesy of FORD MOTOR CO.

NOTE: To avoid part damage and loss of function, do not clean the pump thermostat with mineral spirits or solvent.

Remove and inspect the inner and the outer gerotor gears.
- Clean all pump parts except the thermostat, in solvent.
- Dry the parts with compressed air.
- Inspect the pump gears, faces, gear teeth, pump housing and mating surfaces for damage or scoring.
- If any parts are damaged or worn, install a new pump.
  
  Fig 10: Locating Gerotor Gears
  Courtesy of FORD MOTOR CO.
Inspect the converter hub bushing. If scored or excessively worn, install a new pump. Note the orientation of the notch in the bushing. It must face up.

Fig 11: Locating Converter Hub Bushing
Courtesy of FORD MOTOR CO.
Inspect the front input shaft bushing. If the bushing is worn or scored, install a new pump.

Fig 12: Locating Front Input Shaft Bushing
Courtesy of FORD MOTOR CO.
Inspect the rear input shaft bushing for wear. If scored or worn, install a new pump.

Fig 13: Locating Rear Input Shaft Bushing
Courtesy of FORD MOTOR CO.
Inspect the following:
- All valve and plug bores for scoring or damage.
- All passages for obstructions.
- Mating surfaces for burrs and scoring.
- All springs for distortion.
- When dry, check all valves and plugs for free movement in their respective bores.