Chrysler Concorde 1993, Руководство по обслуживанию, Страница: 615 / 820

performance or transaxle failure. In order to cor-
rectly repair this type of leak the transaxle must be
removed from the vehicle and both transfer shaft
seals replaced. Refer to ‘‘Transfer Shaft Seal Replace-
ment’’ procedure in this section.
FLUID LEAKAGE-TORQUE CONVERTER
HOUSING AREA
(1) Check for source of leakage. Fluid leakage from
the torque converter area may originate from an en-
gine oil leak, a differential oil leak or an ATF oil
leak. The area should be examined closely.
(2) Prior to removing the transaxle, perform the
following checks:
•
When leakage is determined to be automatic
transmission fluid, check fluid level prior to removal
of the transaxle and torque converter.
•
High oil level can result in oil leakage out the
vent. If the fluid level is high, adjust to proper level.
•
After performing this operation, inspect for leak-
age. If a leak persists, perform the following opera-
tion on the vehicle to determine if it is the torque
converter or transaxle that is leaking.
LEAKAGE TEST PROBE
(1) Remove torque converter housing dust shield.
(2) Clean the inside of torque converter housing
(lower area) as dry as possible. A solvent spray fol-
lowed by compressed air drying is preferable.
(3) Fabricate and fasten test probe (Fig. 5) securely
to convenient dust shield bolt hole. Make certain
torque converter is cleared by test probe. Tool must
be clean and dry.
(4) Run engine at approximately 2,500 rpm with
transaxle in neutral, for about 2 minutes. Transaxle
must be at operating temperature.
(5) Stop engine and carefully remove tool.
(6) If upper surface of test probe is dry, there is no
torque converter leak. A path of fluid across probe
indicates a torque converter leak. Oil leaking under the
probe is coming from the transaxle.
(7) Remove transaxle and torque converter assembly
from vehicle for further investigation. The fluid should be
drained from the transaxle. Re install oil pan (with Mopar
Adhesive Sealant) at specified torque.
Possible sources of transaxle torque converter area
ATF fluid leakage are:
•
Torque converter hub seal.
•
Seal lip cut, check torque converter hub finish.
•
Bushing moved and/or worn.
•
Oil return hole in pump housing plugged or omitted.
•
Seal worn out (high-mileage vehicles).
•
Fluid leakage at the outside diameter from pump
housing O-ring.
•
Fluid leakage at the front pump to case bolts. Check
condition of washers on bolts and use new bolts, if
necessary.
•
Fluid leakage due to case or front pump housing
porosity.
One once of oil dye can be added to the automatic
transmission fluid to help locate leaks. Add the dye
through the transaxle dipstick tube. Then reproduce
the leak and check for traces of dye. Repair leak as
required.
TORQUE CONVERTER LEAKAGE
Possible sources of torque converter leakage are:
•
Torque converter weld leaks at the out side (periph-
eral) weld.
•
Torque converter hub weld.
Hub weld is inside and not visible. Do not
attempt to repair. Replace torque converter.
FLUID LEAKAGE—DIFFERENTIAL HOUSING
AREA
The differential uses 80w-90 petroleum based hypoid
gear lube. It can be distinguished from ATF by its
brown color (ATF is dyed red). Also gear lube has a
distinctive odor (hypoid smell).
Fig. 4 Weep Hole Location
Fig. 5 Leak Locating Test Probe Tool
21 - 16 TRANSAXLE