FLUID REQUIREMENT
NOTE: Refer to the maintenance schedules in
Group 0, Lubrication and Maintenance for the rec-
ommended maintenance (fluid/filter change) inter-
vals for this transaxle.
NOTE: Refer to Service Procedures in this group
for fluid level checking procedures.
NOTE: The 42LE transaxle has separate transmis-
sion and differential oil sumps, each requiring dif-
ferent fluids.
DESCRIPTION
TRANSMISSION
Mopart ATF+4 (Automatic Transmission Fluid-
Type 9602) is required in this transaxle. Substitute
fluids can induce torque converter clutch shudder.
Mopart ATF+4 (Automatic Transmission Fluid-
Type 9602) when new is red in color. The ATF is dyed
red so it can be identified from other fluids used in
the vehicle such as engine oil or antifreeze. The red
color is not permanent and is not an indicator of fluid
condition. As the vehicle is driven, the ATF will begin
to look darker in color and may eventually become
brown. This is normal. A dark brown/black fluid
accompanied with a burnt odor and/or deterioration
in shift quality may indicate fluid deterioration or
transmission component failure.
DIFFERENTIAL
The differential sump should be filled with Mopart
75W-90 hypoid gear lubricant. Synthetic gear lubri-
cants should be avoided.
FLUID ADDITIVES
DaimlerChrysler strongly recommends against the
addition of any fluids to the transmission, other than
those automatic transmission fluids listed above.
Exceptions to this policy are the use of special dyes
to aid in detecting fluid leaks.
Various “special” additives and supplements exist
that claim to improve shift feel and/or quality. These
additives and others also claim to improve converter
clutch operation and inhibit overheating, oxidation,
varnish, and sludge. These claims have not been sup-
ported to the satisfaction of DaimlerChrysler and
these additives must not be used. The use of trans-
mission “sealers” should also be avoided, since they
may adversely affect the integrity of transmission
seals.
TORQUE CONVERTER
DESCRIPTION
The torque converter is located in the bellhousing
area of the transaxle, between the engine and tran-
saxle. The torque converter is a fluid coupling that
transmits torque from the engine drive plate to the
input shaft of the transaxle. The torque converter
consists of four main components (Fig. 3) :
• Impeller
• Turbine
• Stator
• Converter Clutch assembly
OPERATION
The converter impeller (driving member), which is
integral to the converter housing and bolted to the
engine drive plate, rotates at engine speed. The con-
verter turbine (driven member), which reacts from
fluid pressure generated by the impeller, rotates and
turns the transmission input shaft.
Torque is transmitted by fluid passing through
curved vanes in both the impeller and turbine. Since
Fig. 3 Torque Converter Assembly
1 – TURBINE
2 – IMPELLER
3 – HUB
4–STATOR
5 – CONVERTER CLUTCH DISC
6 – DRIVE PLATE
21 - 4 42LE TRANSAXLE LH
DESCRIPTION AND OPERATION (Continued)
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