check transmission fluid FORD MUSTANG 2003 Service Manual

170°F), check and adjust the transmission fluid level, and check for any leaks. If fluid is needed,
add fluid in increments of 0.24-
liter (0.5-pint) until the correct level is achieved (fluid should be in
the cross- hatched area of the fluid level indicator).
Draining
Vehicles without a torque converter drain plug 1. With the vehicle in NEUTRAL, position on a hoist. For additional information, refer to Section 100 - 02 .
2. Loosen the transmission fluid pan bolts and allow the fluid to drain.
3. After the fluid has drained, remove the transmission fluid pan.
4. Do not remove the fluid filter. It is not necessary to change the fluid filter during a normal maintenance fluid change.
5. Clean and inspect the transmission fluid pan, transmission fluid pan gasket and magnet.
6. Thoroughly flush the cooler tubes. For additional information, refer to Transmission Fluid Cooler — Backflushing and Cleaning in this section. Klj . 5 ba
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Refill
7. Position the magnet into the transmission fluid pan.
8. NOTE: The fluid pan gasket is reusable, clean and inspect for damage. If not damaged, the
gasket should be reused.
Install the fluid pan and gasket.
1. Position the fluid pan with the gasket in place.
2. Install the bolts.
9. CAUTION: The use of any other transmission fluid can result in the transmission
failing to operate in a normal manner or transmission failure.
Fill the transmission.
zAdd 4.7 liters (5 qts) of clean automatic transmission fluid to the transmission through the
fluid filler tube.
10. Start the engine. Move the transmission range selector lever through all the gear ranges, checking for engagements.
11. With the engine running and the transmission at normal operating temperature 66- 77°C (150-
170°F), check and adjust the transmission fluid level, and check for any leaks. If fluid is needed,
add fluid in increments of 0.24- liter (0.5-pint) until the correct level is achieved (fluid should be in
the cross- hatched area of the fluid level indicator). Klj . 6 ba
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IN-
VEHICLE REPAIR
Fluid Pan, Gasket and Filter
1. Normal maintenance requires periodic automatic transmission fluid changes. If a major repair, such as a clutch, band, bearing, etc., is required, the automatic transmission will also have to be
removed for repair. At this time, the torque converter, transmission cooler and tubes must be
thoroughly flushed to remove any dirt. The transmission fluid needs to be changed if evidence
of fluid contamination is found. When used under continuous or severe conditions, the
transmission and torque converter should be drained and refilled with fluid as specified.
2. CAUTION: Do not use any supplemental transmission fluid additives or cleaning
agents. The use of these products could cause internal transmission components to fail;
this will effect the operation of the transmission.
CAUTION: Use of a fluid other than specified could result in transmission failure.
Refer to the vehicle certification label affixed to the LH front door lock face panel or door pillar
for the transmission code.
3. When filling a dry transmission and torque converter, refer to General Specifications chart in this section for capacity. Check the fluid level.
Removal
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
3. Place a drain pan under the transmission fluid pan.
4. Drain transmission fluid. zLoosen the transmission fluid pan bolts and allow fluid to drain. After fluid is drained
remove the bolts.
SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual Material
Item Specification
MERCON® V Automatic
Transmission Fluid
XT
-5-QM, XT -5-DM MERCON® V Klj . 1 ba
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REMOVAL
Transmission
CAUTION: Whenever a transmission has been disassembled to install new parts the
transmission fluid cooler tubes must be cleaned and backflushed. Use a suitable torque
converter/fluid cooler cleaner. If equipped a new oil- to-air cooler must also be installed.
When internal wear or damage has occurred in the transmission, metal particles, clutch plate
material or band material may have been carried into the torque converter and fluid cooler.
These contaminants are a major cause of recurring transmission troubles and must be
removed from the system before the transmission is put back into use.
CAUTION: After transmission is removed for a major overhaul, it is important to
completely clean all transmission components, including torque converter, oil- to-air cooler if
equipped, cooler inlet tube, main control valve body, clutches and all coasting booster valve
shuttle balls after any transmission repair that generates contamination. These contaminants
are a major cause for recurring transmission concerns and must be removed from the system
before the transmission is returned to use.
The cleaning of foreign material from the direct clutch check ball is often omitted. This
omission can lead to repeat repair of the transmission.
If equipped a new oil- to-air cooler must be installed under the following conditions; for
installation refer to Section 307 - 02 .
z Evidence of transmission assembly or fluid contamination is found due to the following
transmission or converter failure modes:
„major metallic failure
„ multiple clutches or clutch plate failures
„ sufficient component wear which results in metallic contamination.
1. Place the transmission range selector lever in NEUTRAL.
2. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
3. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
4. Remove the dual converter Y pipe. For additional information, refer to Section 309 - 00 .
5. Disconnect the transmission harness electrical connector.
SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual Special Tool(s)
Retainer, Torque Converter
307-
346 (T97T-7902- A) Klj . 1 ba
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12.
NOTE: Before assembly, soak the new clutch discs in clean automatic transmission fluid for 15
minutes.
Install the clutch pack assembly. 1. Install the pressure ring.
2. Install the clutch pack.
3. Install the pressure plate.
13. Install the clutch pack retaining ring.
14. Install the special tool on the forward clutch pack. zPush downward on the clutch pack.
z Release pressure and zero the dial indicator.
15. Using the special tool, check the clutch pack clearance. 1. Lift up on the clutch pack until it fully seats against the clutch pressure plate retainer.
2. Read the dial indicator.
„If the clearance is not within specifications, install the correct size retaining ring. Selective Retaining Ring
Specification Klj . 7 ba
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DISASSEMBLY AND ASSEMBLY OF SUBASSEMBLIES
Torque Converter
1. A new or remanufactured torque converter must be installed if one or more of the following statements is true:
zA torque converter malfunction has been determined based on complete diagnostic
procedures.
z Converter stud or studs, impeller hub or bushing are damaged.
z Discoloration (due to overheating).
z The torque converter is found to be out of specification when carrying out one of the
following torque converter checks:
„One- Way Clutch Check
„ End Play Check
„ Stator to Turbine Interference Check
„ Stator to Impeller Interference Check
„ Torque Converter Leak Check
z Evidence of transmission assembly or fluid contamination due to the following
transmission or converter failure modes:
„Major metallic failure.
„ Multiple clutches or clutch plate failures.
„ Sufficient component wear which results in metallic contamination.
SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual Klj . 1 ba
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23.
NOTE: Before assembly, soak the new clutch discs in clean automatic transmission fluid for 15
minutes.
Install the intermediate clutch pack and selective steel plate.
24. Using the special tool, check the intermediate clutch clearance. 1. Position the special tool on the pump case mounting surface.
2. Maintaining downward pressure, use a depth micrometer to measure and verify intermediate clutch clearance is within specification.
If the intermediate clutch is not within specification, install a correct selective plate.
25. Install the intermediate anti- rattle clip, if equipped. Selective Steel Plates
Specification
1.80-
1.70 mm (0.071- 0.067 inch) 2.05-
1.95 mm (0.081- 0.077 inch) 2.31-
2.20 mm (0.091- 0.087 inch) 2.56-
2.46 mm (0.101- 0.097 inch) Klj . 9 ba
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23.
NOTE: When the battery is disconnected and reconnected, some abnormal drive symptoms
may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven
16 km (10 miles) or more until the vehicle relearns the strategy.
Connect the battery ground cable.
24. If required, fill the transmission with clean automatic transmission fluid.
25. Check the transmission for correct operation. Klj . 7 ba
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DIAGNOSIS AND TESTING
Transmission Cooling
Inspection and Verification
WARNING: Never remove the radiator cap under any conditions while the engine is
operating. Failure to follow these instructions could result in personal injury and/or damage to
the cooling system or engine. To avoid having scalding hot coolant or steam blow out of the
radiator, use extreme care when removing the radiator cap from a hot radiator. Wait until the
engine has cooled, then wrap a thick cloth around the radiator cap and turn it slowly to the first
stop. Step back while the pressure is released from the cooling system. When you are certain
all the pressure has been released, press down on the radiator cap (with a cloth), turn and
remove.
The transmission fluid cooler is integral to the radiator (8005). Whenever leaks or damage to the
radiator are found, install an entire new radiator. For additional information, refer to Section 303 - 03A or
Section 303 - 03B .
Symptom Chart SECTION 307-
02: Transaxle/Transmission Cooling 2003 Mustang Workshop Manual SYMPTOM CHART
Condition
Possible Sources Action
z Transmission
Overheating z
Damaged radiator. zREPAIR or install a new
radiator. For additional
information, REFER to
Section 303 - 03A or
Section 303 - 03B .
z System leaks. zINSPECT for leaks. REPAIR
as necessary.
z Incorrect fluid level. zADJUST to proper level.
z Fluid condition. zINSPECT according to
instructions under Fluid
Condition Check. REFER to
Section 307 - 01 .
z Damaged, blocked,
reversed, leaking or
restricted cooler lines
or cooler tubes. z
INSPECT cooler lines and
tubes. REPAIR or flush as
necessary.
z Engine concerns
causing transmission
to overheat. z
INSPECT engine cooling
system. For additional
information, REFER to
Section 303 - 03A or
Section 303 - 03B .
z Excessive towing
loads. z
CHECK gross vehicle weight.
z Incorrect idle or
performance. z
REFER to the Powertrain
Control/Emissions Diagnosis
(PC/ED) manual. Klj . 1 ba
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z
Other
component
leaking. z
IDENTIFY leaking fluid
as engine, power
steering, or transmission
fluid. REPAIR as
necessary.
z False report. zREMOVE all traces of
lube on the exposed
transmission surfaces.
CHECK the vent for free
breathing. OPERATE
the transmission and
INSPECT for new
leakage. REPAIR as
necessary. REFER to
Section 308 - 03A or
Section 308 - 03B .
z Internal
components. z
INSPECT for leaks at
the input shaft bearing
retainer seal and the
shift rail expansion plug.
REFER to Section 308 -
03A or
Section 308 -
03B . INSPECT for leaks
at the top cover gasket.
INSPECT the case for
sand holes or cracks.
REPAIR or INSTALL a
new case as necessary.
REFER to Section 308 -
03A or
Section 308 -
03B .
z Fill and drain
plugs. z
CHECK fill and drain
plugs and bore threads.
REPAIR as necessary.
TIGHTEN plugs to
specified torque value.
REFER to Section 308 -
03A or
Section 308 -
03B .
z Bearing failure zOther part
failure.
z Raceways or
rollers.
z Lubricant.
z Towing vehicle
further than 80
km (50 miles)
with driveshaft
installed.
Mainshaft
tapered bearing
and needle
caged bearings
are especially
susceptible to
damage. z
REMOVE,
DISASSEMBLE and
CLEAN the
transmission. Inspect for
damaged parts and
install new components
as necessary. (Note:
RESET the bearing
preload if any new
tapered bearings are
installed). REFER to
Section 308 - 03A or
Section 308 - 03B .
z Vibration break-
up of retainer
and brinelling of
races.
z Bearing(s). z
DETERMINE the cause
of vibration and
CORRECT. Otherwise
PROCEED as above. Klj . 6 ba
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