Pump Assembly: Disassembly

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Using the special tools, remove and discard the front pump seal.

Fig 1: Identifying Front Pump Seal With Special Tools

Courtesy of FORD MOTOR CO.

Remove and discard the front pump stator support seal.

Fig 2: Front Pump Stator Support Seal

Courtesy of FORD MOTOR CO.

Remove and discard the 2 seals.

Fig 3: Front Pump Seals

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Remove and discard the pump outer diameter square-cut front pump seal.

Fig 4: Identifying Pump Outer Diameter Square-Cut Front Pump Seal

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NOTE: Note the location of the bolts for assembly.

Remove the overdrive piston return spring.

Fig 5: Overdrive Piston Return Spring And Bolts

Courtesy of FORD MOTOR CO.

Remove and discard the overdrive piston.

Fig 6: Identifying Overdrive Piston

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Remove bolts and separate the pump control body from the pump gear body.

Fig 7: Pump Control Body And Pump 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.

Remove and inspect the plate.

Fig 8: Identifying Separator Plate

Courtesy of FORD MOTOR CO.

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 Components

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: View Of Generator Gearset With Both Dots Facing Up

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: Inspecting 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: Inspecting 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: Inspecting Rear Input Shaft Bushing For Wear

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.