Automatic Transaxle - 6 Speed: Maintenance Mercury Montego III

Check Fluid Level and Condition

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 fluid needs to cool down to obtain an accurate reading.

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

Fluid Level Check

Note. The transaxle fluid should be checked at normal operating temperature 70°C-80°C (158°F-176°F) on a level surface. Normal operating temperature can be reached after approximately 32 km (20 miles) of driving.

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

Scheme 49

1. With the transaxle in (P) 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.
2. Wipe the fluid level indicator cap and remove the fluid level indicator.
3. Wipe the fluid level indicator with a clean cloth.
4. Install the fluid level indicator back in the fluid filler tube until it is fully seated, then remove the indicator. The fluid level should be within the normal operating range.

High Fluid Level

A fluid level that is too high may cause the fluid to become aerated due to the churning action of the rotating internal parts. This will cause erratic control pressure, foaming, loss of 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 Fluid Level

A low 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 Fluid

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

Fluid Condition Check

1. Check the 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 fluid level indicator over a white facial tissue and allow the 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 fluid contamination or transaxle failure is confirmed by the sediment in the bottom of the fluid pan, install a new transaxle. If installing a new transaxle, the cooler bypass valve, if equipped, coolers and cooler lines should be cleaned.
7. Carry out diagnostic checks and adjustments. Refer to «DIAGNOSIS BY SYMPTOM»(ref-233010-S40556545652006052400000) .

External Fluid Leaks

EXTERNAL FLUID LEAKS

Other Concerns: Transmission Fluid Level

POSSIBLE COMPONENT AND REFERENCE/ACTION

Other Concerns: Transmission Fluid Condition

POSSIBLE COMPONENT AND REFERENCE/ACTION