ALTERNATIVE MAINTENANCE METHODS
TRANSAXLE FLUID EXCHANGER METHOD
CAUTION: The use of any fluid exchanger that
introduces additives into the transaxle is not rec-
ommended.
(1) To perform the transaxle fluid exchange, the
transaxle must be at operating temperature. Drive
the vehicle until it reaches full operating tempera-
ture.
(2) Obtain a suitable transaxle fluid exchanger
and verify the tank is clean and dry.
(3) Fill the tank to the recommended fill capacity
with Mopart ATF+4 Type 9602.
(4) Connect the machine to the vehicle following
the manufacturers instructions. Perform the
exchange procedure following the instructions pro-
vided with the machine.
(5) Once machine has completed the fluid
exchange. Check the fluid level and condition and fill
to proper level with Mopart ATF+4 Type 9602. Refer
to Fluid Level and Condition Check in this group for
the proper fluid “top-off” procedure.
NOTE: Verify that the transaxle cooler lines are
tightened to proper specifications. Cooler line
torque specification is 2 N•m (18 in. lbs.).
DIPSTICK TUBE FLUID SUCTION METHOD
(1) When performing the fluid suction method,
make sure the transaxle is at full operating temper-
ature.
(2) To perform the dipstick tube fluid suction
method, use a suitable fluid suction device (Vaculay
or equivalent).
(3) Insert the fluid suction line into the dipstick
tube.
NOTE: Verify that the suction line is inserted to the
lowest point of the transaxle oil pan. This will
ensure complete evacuation of the fluid in the pan.
(4) Follow the manufacturers recommended proce-
dure and evacuate the fluid from the transaxle.
(5) Remove the suction line from the dipstick tube.
(6) Pour four quarts of Mopart ATF+4 (Automatic
Transmission Fluid) Type 9602 through the dipstick
opening.
(7) Start engine and allow to idle for at least one
minute. Then, with parking and service brakes
applied, move selector lever momentarily to each
position, ending in the park or neutral position.
(8) Check the transaxle fluid level and add an
appropriate amount to bring the transaxle fluid level
to 3mm (1/8 in.) below the “ADD” mark on the dip-
stick (Fig. 38).
(9) Recheck the fluid level after the transaxle has
reached normal operating temperature (180°F.).
(10) To prevent dirt from entering transaxle, make
certain that dipstick is fully seated into the dipstick
opening.
FLUID DRAIN AND REFILL-DIFFERENTIAL
SUMP
The differential fluid can be drained and filled
without having to remove the transaxle from the
vehicle. Use only Mopart Fuel Saving 75W-90 petro-
leum based hypoid gear lubricant when replacing
fluid.
REMOVAL
(1) Raise vehicle on hoist.
(2) Remove differential drain plug located on the
bottom of the differential housing. Allow the fluid to
drain into an oil drain pan.
(3) Remove differential fill plug located on the dif-
ferential side cover. This will assist the flow of fluid
from the drain plug hole.
INSTALLATION
(1) Install drain plug into differential housing.
Tighten drain plug to 7 N·m (60 in. lbs.)
(2) Fill differential with Mopart Fuel Saving
75W-90 petroleum based hypoid gear lubricant. The
fluid should be level with the bottom of the fill hole.
The differential capacity is.946 liters (32 ounces).
CAUTION: Overfilling the differential can result in
oil foaming and/or oil loss from the differential vent.
(3) Install differential fill plug. Tighten fill plug to
47 N·m (35 ft. lbs.).
ALUMINUM THREAD REPAIR
Damaged or worn threads in the aluminum tran-
saxle case and valve body can be repaired by the use
of Heli-Coils, or equivalent. This repair consists of
drilling out the worn-out damaged threads. Then tap
the hole with a special Heli-Coil tap, or equivalent,
and installing a Heli-Coil insert, or equivalent, into
the hole. This brings the hole back to its original
thread size.
Heli-Coil, or equivalent, tools and inserts are
readily available from most automotive parts suppli-
ers.
FLUSHING COOLERS AND TUBES
When a transaxle failure has contaminated the
fluid, the oil cooler(s) must be flushed. The cooler
bypass valve in the transaxle must be replaced also.
The torque converter must also be replaced with an
LH 42LE TRANSAXLE 21 - 31
SERVICE PROCEDURES (Continued)
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