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DISASSEMBLY
• Because the automatic transaxle is manufactured from high-precision parts, care must be taken not to scratch or damage these parts during disassembly and assembly.
• Work on a rubber mat and keep it clean at all times.
• Do not wear any cloth gloves and do not use any shop towels during disassembly. Use only nylon cloth, paper towels or any other lint-free material.
• Parts which have been disassembled should all be cleaned. Metal parts can be cleaned with normal detergent, but they should be dried completely using compressed air.
• Clutch discs, plastic thrust plates and rubber parts should be cleaned with automatic transmission fluid (ATF).
• If the transaxle body has been damaged, disassemble and clean the cooler system.
1.Remove the torque converter. |
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2.Use a dial gauge to measure the input shaft end play.
3.Remove each bracket.
4.Remove the dipstick.
5.Remove the eye bolt, gaskets and the oil cooler feed tube. |
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6.Remove the air breather by jabbing a screw driver into the air breather and prying it up. |
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7.Remove the input shaft speed sensor and output shaft speed sensor.
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The manual control lever tightening nut must be removed before removing the valve body. If the valve body is removed before the nut, the park/neutral position switch will be damaged.
8.Loosen the manual control lever tightening nut, and then remove the manual control lever and the park/neutral position switch. |
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9.Remove the Sealing cap and o-ring. |
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10.Remove the valve body cover. |
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11.Remove the manual control shaft detent. |
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12.Disconnect the solenoid valve harness from the valve body by disconnecting the fluid temperature sensor and all the connectors. |
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Make sure that the manual control lever and the park/neutral position switch are removed. See step 8.
Do not remove the bolts (four pieces) shown in the illustration.
13.Remove the valve body mounting bolts (twenty seven pieces).
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Do not lose the two steel balls.
14.Remove the valve body, gasket, and the steel balls (two pieces). |
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15.Remove the snap ring from the connector. Push the connector into the transaxle case and remove the solenoid valve harness. |
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16.Remove the strainer and the second brake retainer oil seal. |
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17.Remove each accumulator piston and spring.
NUMBER |
NAME |
1 |
For low-reverse brake |
2 |
For underdrive clutch |
3 |
For second brake |
4 |
For overdrive clutch |
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18.Remove the manual control lever shaft roller.
19.Remove the manual control lever shaft and the parking pawl rod. |
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20.Remove the torque converter housing mounting bolts (eighteen pieces), and then remove the torque converter housing.
21.Remove the differential bearing outer race and spacer from the torque converter housing. |
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22.Remove the O-rings (two pieces). |
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23.Remove the differential. |
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24.Remove the oil filter. |
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25.Remove the oil pump mounting bolts (six pieces). |
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26.Use special tools MD998333 in position shown in the drawing.
27.Turn special tools MD998333 to remove the oil pump.
28.Remove the oil pump gasket. |
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29.Remove thrust washer number 1. |
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30.Holding the input shaft, remove the underdrive clutch and input shaft. |
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31.Remove thrust bearing number 2. |
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32.Remove the underdrive clutch hub. |
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33.Remove the parking pawl shaft, and then remove the spacer and spring. |
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34.Remove the parking roller support shafts (two pieces), and then remove the parking pawl and parking roller support. |
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35.Remove the rear cover and input shaft rear bearing.
36.Remove thrust race number 8.
37.Remove the seal rings (four pieces). |
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38.Remove the O-rings (three pieces). |
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39.Remove the reverse and overdrive clutch and thrust bearing number 7. |
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40.Remove overdrive clutch hub and thrust bearing number 6. |
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41.Remove thrust bearing number 5. |
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42.Remove the planetary reverse sun gear. |
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43.Remove the snap ring. |
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44.Remove the second brake piston and the return spring. |
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45.Remove the brake plates (two pieces), brake discs (three pieces) and pressure plate. |
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46.Remove the planetary carrier assembly. |
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47.Remove the snap ring. |
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48.Remove the reaction plate and the brake disc. |
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49.Remove the snap ring. |
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50.Remove the brake plates, brake discs and pressure plate.
Model |
Brake disc |
Brake plate |
Pressure plate |
F4A4B-1 |
4* |
5 |
1 |
F4A4B-4 |
5* |
6 |
1 |
NOTE: *Includes the brake discs removed in step 48. |
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51.Remove the wave spring. |
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52.Remove the one-way clutch inner race and low-reverse brake piston as follows:
(1)Using special tools MD998903 and MD998924, compress the one-way clutch inner race.
(2)Remove the snap ring.
(3)Remove the special tools.
(4)Remove the one-way clutch inner race, O-ring, spring retainer, return spring and low-reverse brake piston. |
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53.Remove the transfer drive gear bearing mounting bolts (three or four pieces).
Then, turn the gear 1/8 turn (45 degree angle) and remove the remaining bolts. |
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54.Remove the transfer drive gear. |
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55.Remove the cap by jabbing a screw driver into the center of the cap and prying it up. |
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56.Using a chisel, straighten the staked portions from the output shaft jam nut.
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The jam nut is reverse threaded.
57.Use special tools MB991625 and MB990607 to remove the output shaft jam nut. |
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58.Remove the bearing retainer mounting bolts. |
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59.Tap on the rear end of the output shaft to remove the output shaft, taper roller bearing and collar. |
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60.Tap out the outer race and the spacer.
61.Remove the snap ring.
62.Remove the differential bearing outer race from the transaxle case. |