Transmission Oil Pump

DISASSEMBLY 

1. Remove the oil pump from the transmission case. Refer to PUMP, TRANSMISSION OIL, REMOVAL AND INSTALLATION .

   Courtesy of CHRYSLER GROUP, LLC

   NOTE:

   Apply air pressure slowly, oil may spray when B-piston releases from the assembly.

2. With one hand above B-piston (1), carefully apply air pressure into the hole directly above the B-piston alignment tab (3) to remove B-piston (2) from the assembly.

   Courtesy of CHRYSLER GROUP, LLC

3. Remove the outer ring (1) (inside B-piston).
4. Remove the snap ring (2).
5. Remove the clutches and spacers (4).
6. Remove the hub (3).

   Courtesy of CHRYSLER GROUP, LLC

7. Position the oil pump housing assembly (4) in a suitable press.
8. Using (special tool #8285, Compressor, Spring) (1), press on the fingers of the piston retainer to remove tension on the split retaining ring (2), and remove the two halves of the retaining ring (2).

   Courtesy of CHRYSLER GROUP, LLC

9. Remove the piston retainer and the belleville spring (1).

   Courtesy of CHRYSLER GROUP, LLC

10. Remove the A-piston (1) and seal (2) from the oil pump.

    Courtesy of CHRYSLER GROUP, LLC

11. Remove the inner (1) and outer (2) oil pump O-rings.

    Courtesy of CHRYSLER GROUP, LLC

12. Remove and

    DISCARD 

    the six bolts (1) from the oil pump.

    Courtesy of CHRYSLER GROUP, LLC

13. Separate the two halves of the oil pump, by pushing on the hub.

    Courtesy of CHRYSLER GROUP, LLC

14. Carefully pry up on the oil pump (1), separating it from the housing (2).

    Courtesy of CHRYSLER GROUP, LLC

15. Remove the oil pump O-ring (2).

    Courtesy of CHRYSLER GROUP, LLC

16. Remove the oil pump seal (2).

ASSEMBLY 

Courtesy of CHRYSLER GROUP, LLC

1. Install the oil pump seal (2).

   Courtesy of CHRYSLER GROUP, LLC

2. Install the oil pump O-ring (2).
3. Carefully seat the oil pump into the housing, make sure the pump is seated properly.

   Courtesy of CHRYSLER GROUP, LLC

4. Install the two oil pump housing halves together.

   Courtesy of CHRYSLER GROUP, LLC

5. Install six NEW  oil pump housing bolts (1).
6. Tighten the bolts to 5 N.m (44 in. lbs). plus 45°.

   Courtesy of CHRYSLER GROUP, LLC

7. Replace the inner and outer oil pump housing O-rings (1).

   Courtesy of CHRYSLER GROUP, LLC

8. Replace the A- piston seal (2) and install the A-piston (1).

   Courtesy of CHRYSLER GROUP, LLC

9. Install the belleville spring (1).

   Courtesy of CHRYSLER GROUP, LLC

10. Position the oil pump housing assembly (4) in a suitable arbor press.
11. Using (special tool #8285, Compressor, Spring) (1), press on the fingers of the piston retaining ring to remove tension, and install the two halves of the split retainer ring (2).

    Courtesy of CHRYSLER GROUP, LLC

12. Install the hub (3).
13. Install the clutches and spacers (4).
14. Install the snap ring (2).
15. Install the outer ring (1) (below B-piston).

    Courtesy of CHRYSLER GROUP, LLC

16. Position the B-piston alignment tab (2) above the notch and install B-piston (1) on the assembly.
17. Install the oil pump into the transmission. Refer to PUMP, TRANSMISSION OIL, REMOVAL AND INSTALLATION .