Automatic Transaxle/transmission - Aisin AW21: Maintenance Ford Fusion I рестайлинг

Check Transmission Fluid Level and Condition

Note. The vehicle should not be driven if the transmission fluid level indicator shows the transmission fluid below the DO NOT DRIVE mark or internal failure could result.

If the vehicle has been operated for an extended period of time at highway speeds, in city traffic, in hot weather or while pulling a trailer, the transmission fluid needs to cool down to obtain an accurate reading.

The transmission fluid level reading on the transmission fluid level indicator will differ depending on operating and ambient temperatures. The correct reading should be within the normal operating temperature range.

Transmission Fluid Level Check

Note. The transmission fluid should be checked at normal operating temperature 60°C-70°C (140°F-158°F) on a level surface. Normal operating temperature can be reached after approximately 32 km (20 mi) of driving.

Under normal circumstances, the transmission fluid level should be checked during normal maintenance. If the transaxle starts to slip, shifts slowly or shows signs of transmission fluid leaking, the transmission fluid level should be checked.

1. Using the scan tool, verify the correct Transmission Fluid Temperature (TFT) range.
2. With the transaxle in PARK, the engine at idle, foot pressed on the brake, move the selector lever through each gear and allow engagement of each gear. Place the selector lever in the PARK position.
3. Wipe the transmission fluid level indicator cap and remove the transmission fluid level indicator.
4. Wipe the transmission fluid level indicator with a clean cloth.
5. Install the transmission fluid level indicator back in the transmission fluid filler tube until it is fully seated, then remove the indicator. The transmission fluid level should be within the normal operating range.

Scheme 376

High Transmission Fluid Level

A transmission fluid level that is too high may cause the transmission fluid to become aerated due to the churning action of the rotating internal parts. This will cause erratic control pressure, foaming, loss of transmission fluid from the vent tube and possible transaxle malfunction and/or damage. If an overfill reading is indicated, refer to Transmission Fluid Drain and Refill .

Low Transmission Fluid Level

A low transmission fluid level could result in poor transaxle engagement, slipping, malfunction and/or damage. This could also indicate a leak in one of the transaxle seals or gaskets.

Adding Transmission Fluid

Note. The use of any other type of transmission fluid than specified could result in transaxle malfunction and/or damage.

If transmission fluid needs to be added, add transmission fluid in 0.25L (1/2 pt) increments through the transmission fluid filler tube. Do not overfill the transmission fluid. For transmission fluid type, refer to SPECIFICATIONS .

Transmission Fluid Condition Check

1. Check the transmission fluid level.
2. Observe the color and the odor. The color under normal circumstances should be a dark red color, not brown or black or have a burnt odor.
3. Hold the transmission fluid level indicator over a white facial tissue and allow the transmission fluid to drip onto the facial tissue and examine the stain.
4. If evidence of solid material is found, the transmission fluid pan should be removed for further inspection.
5. If the stain is a foamy pink color this may indicate coolant in the transaxle. The engine cooling system should also be inspected at this time.
6. If transmission fluid contamination or transaxle failure is confirmed by the sediment in the bottom of the transmission fluid pan, install a new transaxle. If installing a new transaxle the transmission fluid cooler bypass valve, transmission fluid coolers and transmission cooler tubes should be cleaned.
7. Carry out diagnostic checks and adjustments. Refer to «Diagnosis By Symptom»(ref-291884-S32448146262008073000000) .

Water in Transmission Fluid

To correctly repair an automatic transaxle that has had water or coolant introduced into the system, only install a new transaxle for the units that cannot be disassembled and cleaned. Prior to installing the transaxle, the transmission fluid cooler(s), transmission fluid cooler tubes and transmission fluid cooler hoses need to be flushed and cleaned.

Transmission Fluid Cooler - Backflushing and Cleaning

Material

Note. MERCON®, MERCON® V, MERCON® SP, Motorcraft Premium Automatic Transmission Fluid and Motorcraft Continuously Variable Chain Type Transmission Fluid are not interchangeable transmission fluids. The use of any transmission fluid other than what is recommended for this transaxle will cause transaxle damage. Refer to the transmission fluid specification for the correct transmission fluid.

1. Carry out backflushing with a suitable torque converter/fluid cooler cleaner. Test equipment to make sure that a vigorous transmission fluid flow is present before proceeding. Install a new system transmission fluid filter if flow is weak or contaminated.
2. To aid in attaching the cleaner to the transmission fluid cooler tube, connect 2 additional rubber hoses to the transaxle end of the transmission fluid cooler tube as follows: Connect the cleaner tank pressure tube to the transmission fluid cooler return tube. Connect a tank return hose to the transmission fluid cooler pressure tube. Place the outlet end of this hose in the transmission fluid tank reservoir.
3. Turn on the pump and allow the transmission fluid to circulate a minimum of 5 minutes (cycling switch on and off will help dislodge contaminants in cooler system).
4. Switch off the pump and disconnect the transmission fluid pressure hose from the transmission fluid cooler return tube.
5. Use compressed air to blow out the transmission fluid cooler and tubes (blow air into the transmission fluid cooler return tube) until all transmission fluid is removed.
6. Remove the rubber return hose from the remaining transmission fluid cooler tube.

Transmission Fluid Drain and Refill

Special Tools Illustration Tool Name Tool Number Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Material

Note. MERCON®, MERCON® V, MERCON® SP, Motorcraft Premium Automatic Transmission Fluid and Motorcraft Continuously Variable Chain Type Transmission Fluid are not interchangeable transmission fluids. The use of any transmission fluid other than what is recommended for this transaxle will cause transaxle damage.

Draining

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-291849) article.
2. Remove the transmission fluid drain plug and allow the transmission fluid to drain.
3. Install the transmission fluid drain plug. Tighten to 47 Nm (35 lb-ft).
4. Remove the transmission fluid fill plug.
5. Fill the transaxle with approximately 4.7L (5 qt) of clean transmission fluid.
6. Install the transmission fluid fill plug. Tighten to 39 Nm (29 lb-ft).
7. With the selector lever in PARK, the vehicle should be on a level surface, the engine at idle (680-780 rpm), foot pressed on the brake, move the selector lever through each gear and allow engagement of each gear. Place the selector lever back in the PARK position.
8. Wipe the transmission fluid level indicator cap and remove the transmission fluid level indicator.
9. Wipe the transmission fluid level indicator with a clean cloth.
10. If transmission fluid needs to be added, add transmission fluid in 0.25L (1/2 pt) increments through the transmission fluid fill plug located on the top of the transaxle near the transmission fluid level indicator. Do not overfill the transmission fluid. Install the transmission fluid level indicator back in the transmission fluid filler tube until it is fully seated, then remove the transmission fluid lever indicator. The transmission fluid level should be at the uppermost mark on the transmission fluid level indicator. Only fill to the uppermost mark on the transmission fluid indicator. Do not overfill. Damage to the transaxle will occur.
11. Fill the transaxle to the correct transmission fluid level.
12. If the Transmission Fluid Temperature (TFT) is low, fill the transaxle with transmission fluid to the cold range on the transmission fluid level indicator. Recheck the transmission fluid level when the transaxle has reached the normal operating temperature.