Transmission Oil Pump

REMOVAL 

1. Remove the transmission. Refer to REMOVAL AND INSTALLATION .
2. Remove the valve body. Refer to VALVE BODY, REMOVAL AND INSTALLATION .

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3. Remove the 13 transmission oil pump assembly to case bolts (2).

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4. Remove the input shaft O-ring (1) using a small pick (2) or equivalent.

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5. Carefully pry the transmission oil pump assembly (1) away from the case (2) with a small flat blade screwdriver or equivalent through the case opening.
6. From the front of the transmission, remove the transmission oil pump assembly.

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   NOTE:

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

7. 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.

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8. Remove the outer ring (1) (inside B-piston).
9. Remove the snap ring (2).
10. Remove the clutches and spacers (4).
11. Remove the hub (3).

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12. Position the transmission oil pump housing assembly (4) in a suitable press.
13. 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).

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14. Remove the piston retainer and plate (1).

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15. Remove the five bolts (1) and separate the transmission oil pump housing (2) from the front transmission oil pump cover (3).

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16. Separate the front cover (1) from the transmission oil pump housing (2).

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17. Remove the drive sprocket, chain and pump body (1) as an assembly.
18. Remove and discard all O-rings.

INSTALLATION 

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1. Install the drive sprocket, chain and pump body (1) as an assembly into the transmission oil pump housing.

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2. Set the pump cover (1) onto the transmission oil pump housing (2).

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   NOTE:

   The transmission oil pump bolts under the A-clutch must be replaced.

3. Install the NEW  six bolts (1) and tighten to 5 N.m (44 in. lbs.) plus 45°.

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4. Install the piston plate (1) and the piston retainer.

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

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7. Install the hub (3).
8. Install the clutches and spacers (4).
9. Install the snap ring (2).
10. Install the outer ring (1) (inside B-piston).
11. Install the B-piston.

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    NOTE:

    Firmly press the transmission oil pump in place hand before drawing it in with bolts.

12. Install the 14 NEW  transmission oil pump cover retaining bolts (2) and tighten the transmission oil pump cover as follows:
    1. In order to seat the transmission oil pump cover properly, pre tighten bolts one, seven and nine to 6 N.m (53 in. lb.).
    2. Working in a clockwise pattern, beginning with number one, tighten to 10 N.m (89 in. lb.).
    3. Working in a clockwise pattern, beginning with number one, tighten an additional 90°.

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13. Install the NEW  input shaft O-ring (1).
14. Install the valve body. Refer to VALVE BODY, REMOVAL AND INSTALLATION .
15. Install the transmission. Refer to REMOVAL AND INSTALLATION .