2003 FORD MUSTANG transmission fluid

SPECIFICATIONS
a
MERCON® V is not interchangeable at this time with the current MERCON® fluids. Check the
transmission fluid level indicator to determine the correct fluid and refer to the Workshop/Owner
publication to determine the correct service interval for the specific vehicle. SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual General Specifications
Item Specification
Fluid
a Motorcraft MERCON® V Transmission Fluid XT
-5-QM MERCON®
V Fluid Capacities
3.8L engine 13.2L (13.9 quarts)
4.6L engine 12.0L (12.8 quarts)
Fluid Filter
Inline Transmission Fluid Filter Kit XC3Z-
7B155- AA Inline Transmission Fluid Filter XC3Z-
7B155- BA Lubricant
Ford Multi-Purpose Grease D0AZ-19584-
AA ESB-
M1C93- B
Torque Converter End Play Item Specification
New or remanufactured 0.355-
1.04 mm (0.014- 0.074 in) Used 0.355-
1.87 mm (0.014- 0.074 in)
Band and Clutch Application Chart Gear Overdrive
Band Low
Reverse Band Forward
Clutch Direct
Clutch Interm
Friction Clutch Reverse
Clutch Interm
One-Way
Clutch Planetary
One- Way
Clutch 1st Gear
Manual Low A A H
2nd Gear
Manual Low A A A H
1st Gear —
(D)
(Overdrive) A H
2nd Gear —
(
D)
(Overdrive) A A H
3rd Gear —
(
D)
(Overdrive) A A A O/R
4th Gear —
(
D) A A A O/R Klj . 1 ba
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Clearance 41.7322-42.5958 1.643-1.677
Selective steel plate 1.702-
1.803 0.067-0.071
1.956-
2.057 0.077-0.081
2.210-
2.311 0.087-0.091
2.464-
2.565 0.097-0.101
Torque Specifications Description Nm lb-
ft lb-
in Rear transmission support crossmember bolts 55 40 —
Rear insulator bolts 80 59 —
Extension housing bolts 28 21 —
Transmission fluid pan bolts 14 10 —
Front pump bolts 27 20 —
Front pump support bolts 23 17 —
Harness electrical connector bolt 5 — 44
Inspection cover bolts 35 26 —
Main control valve body bolts 10 — 89
Main control valve body cover plate bolts 10 — 89
Main control valve body separator plate bolts 10 — 89
Manual lever shaft nut 33 24 —
Manual lever shaft outer nut 33 24 —
Fluid cooler line case fittings 21 15 —
Pressure tap plugs 12 9 —
Rear driveshaft bolts 112 83 —
Starter bolts 25 18 —
TCC solenoid bolt 10 — 89
Torque converter drain plug 12 9 —
Torque converter nuts 37 27 —
Digital transmission range (TR) sensor bolts 9 — 80
Transmission bell housing bolts 47 35 —
Vehicle speed sensor (VSS) plug bolt 9 — 80
Output shaft speed (OSS) sensor bolt 12 9 —
Starter B+ cable 11 8 —
Exhaust manifold bolts 40 30 —
Exhaust pipe bolts 40 30 —
Transmission vent tube 12 9 —
Manual control valve detent lever spring bolt 10 — 89
Cooler tube nut to case fitting 18 13 —
Rear differential retaining nuts (front) 90 66 —
Rear differential retaining bolts and nuts (rear) 70 52 — Klj . 5 ba
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S427
110 7B498 Seal assembly —
manual control lever 111 373907-S2 Nut —
1/4 spring (retains identification tag to
7000) 112 7B148 Tag —
identification (part of 7005) 113 7D273 Connector assembly —
fluid tube (2 req'd) 114 7N171 Plug —
converter housing access 115 7B210 Pin —
manual lever shaft retainer 116 391131 Seal —
0.426 x 0.070 O- ring 117 N805862-
S Seal —
14.0 x 1.78 O- ring 118 7G383 Solenoid valve —
transmission pressure control 119 7A441 Pawl —
parking pawl 120 7D071 Shaft —
parking pawl 121 7D419 Cup —
park rod guide (part of 7A039) 122 7D070 Spring —
parking pawl return 123 7A232 Rod assembly —
park pawl actuating 124 7A115 Lever assembly —
manual valve detent lever 125 N800287-
S536 Nut —
M14 x 1.5 hex intermediate detent lever
(attaches 7A115 to 7A256) 126 7H188 Piston assembly —
overdrive servo 127 7F201 Spring —
overdrive servo piston 128 7F203 Rod —
overdrive servo actuating (part of 7H188) 129 7H179 Washer —
backup overdrive servo (part of
7H188) 130 7G277 Spring —
overdrive cushion spring (part of
7H188) 131 7F200 Piston assembly —
overdrive servo (part of
7H188) 132 97411-
S Ring —
retaining (part of 7H188) 133 7384 Ring —
2.85 retaining type TVP "H" internal
(retains 7H188 to 7005) 134 7D031 Spring —
reverse band servo piston 135 7D189 Piston assembly —
reverse band servo 136 7D036 Cover assembly —
reverse band servo piston 137 388215-
S100 Retaining ring internal
— 3-13/16 138 7H292 Piston — 2-
3 accumulator (bonded seals) 139 7F285 Spring
— 2-3 shift accumulator piston (model
dependent) 140 7B264 Retainer — 2-
3 shift accumulator spring 141 7F284 Spring
— 1-2 shift accumulator (model
dependent) 142 7F251 Piston — 1-
2 shift accumulator (bonded seals) 143 7F284 Spring
— 1-2 shift accumulator Klj . 6 ba
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144 7G326 Nested spring
— 1-2 (inner spring) (vehicle
dependent) 145 7F247 Cover and seal assembly — 1-
2 accumulator 146 7384 Ring — 2-
1/16 retaining type HU internal (retains
7H300 to 7005) 147 N807178-
S1000 Bolt —
M6-1.0 x 18 hex head (12- attaches
reinforcing plate to valve body) 148 7F282 Plate —
valve body reinforcing (part of 7A100) 149 7C155 Gasket —
valve body separator upper 150 7A008 Plate —
control valve body separator (part of
7A100) 151 7D100 Gasket —
valve body separator lower 152 7D174 Valve —
converter drainback 153 7A091 Body assembly —
main control 154 7H173 Gasket —
valve body cover plate 155 7C034 Plate —
valve body cover (part of 7A100) 156 N807178-
S1000 Bolt —
M6-1.0 x 18 hex head (11- attaches 7C034
to 7A100 (part of 7A100) 157 7A100 Control assembly —
main (model dependent) 158 7A098 Filter and seal assembly —
fluid 159 7A191 Gasket —
transmission pan 160 7A194 Pan — transmission
161 N605785-
S1036 Bolt —
M8-1.25 x 18 hex flange head (14-
attaches 7A194 to 7005) 162 7L027 Magnet —
ceramic case (part of 7A194) 163 N808947-
S1300 Bolt —
M8-1.25 x 46 hex shoulder pilot (2-
attaches 7C034 to 7A100) 164 N807179-
S1000 Bolt —
M6-1.0 x 52 hex flange head (12- attaches
7A100 to 7005) 165 7H111 Retainer — solenoid
166 7E195 Ball —
1/4 diameter coast booster valve shuttle (8
req'd) 167 7H187 Screen —
solenoid pressure supply 168 N800670-
S1000 Bolt —
M6-1.0 x 40 hex flange head (13- attaches
7A100 to 7005) 169 7E332 Spring assembly —
manual valve detent 170 7Z276 Seal —
0.864 x 0.070 O- ring (2 req'd) 171 7G276 Bulkhead assembly — wiring connector
172 7G276 Bulkhead assembly —
connector (molded lead
frame) 173 7Z484 Seal —
6.07 x 1.70 O- ring (2 req'd) 174 7G484 Solenoid valve —
transmission shift 175 7G136 Solenoid valve —
transmission torque converter
clutch 176 N807178-
S1000 Bolt —
M6-1.0 x 16 hex head (retains 7D136 and
7G484 to 7A100) Klj . 7 ba
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DESCRIPTION AND OPERATION
Torque Converter
The torque converter transmits and multiplies torque. The torque converter is a four-
element device:
z impeller assembly
z turbine assembly
z reactor assembly
z clutch and damper assembly
The standard torque converter components operate as follows:
zRotation of the converter housing and impeller set the fluid in motion.
z The turbine reacts to the fluid motion from the impeller, transferring rotation to the geartrain
through the input shaft.
z The reactor redirects fluid going back into the impeller, allowing for torque multiplication.
z The clutch and damper assembly dampens powertrain torsional vibration and provides a direct
mechanical connection for improved efficiency.
z Power is transmitted from the torque converter to the planetary gearsets and other components
through the input shaft.
SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual Item Part Number Description
1 — Converter clutch and damper (part of 7902)
2 — Reactor (part of 7902)
3 — Turbine (part of 7902) Klj . 1 ba
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4 — Impeller (part of 7902)
5 — Fluid motion
6 — Transmission input rotation
7 — Input shaft
8 — Engine rotation Klj . 2 ba
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DESCRIPTION AND OPERATION
Hydraulic System
Fluid Pump
SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual Item Part Number Description
1 7A106 Front pump body assembly
2 7005 Case assembly
3 7A194 Transmission pan
4 7A191 Transmission pan gasket
5 7A098 Fluid filter and seal assembly
6 7A100 Main control assembly
7 7A108 Front pump support assembly
8 7D273 Fluid tube connector assembly (2 req'd)
Item Part Number Description Klj . 1 ba
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The transmission uses a gerotor-
type design front pump support and gear. The pump provides the
volume of fluid needed to charge the torque converter, main control assembly, cooling system and
lube system. Pump pressure is regulated by the main regulator valve. The pump has an internal boost
circuit which is more efficient at lower engine speeds.
Filter
All fluid drawn from the transmission pan by the pump passes through the filter. The filter and its
accompanying seal are part of the fluid path from the sump (pan) to the fluid pump.
Main Control
The main control valve body houses three electronic solenoids:
ztwo shift solenoids
z one torque converter clutch solenoid (TCC solenoid) Accumulators 1 — Outer rotor (part of 7A103)
2 — Inner rotor (part of 7A103)
3 — Outlet
4 — Inlet
Item Part Number Description
1 — Shift solenoid A (part of 7G484)
2 7G136 Torque converter clutch solenoid
3 — Shift solenoid B (part of 7G484) Klj . 2 ba
42003 Mustang Workshop Manual
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