2003 FORD MUSTANG Rear main seal

Section 308 - 02 .
z Grease or oil on the
clutch disc facing. z
CHECK the input shaft
seal and rear main oil
seal. REPAIR as
necessary. INSTALL a
new clutch disc.
REFER to Section 308 -
03A for T50D
transmissions or
Section 308 - 03B for
TR3650 transmissions.
z Clutch disc surface
glazed or damaged. z
INSPECT the clutch
disc surface for a
glazed, hardened or
damage condition.
CARRY OUT a disc
check. INSTALL a new
clutch disc as
necessary. REFER to
Section 308 - 01 .
z Damaged or worn
clutch pressure
plate. z
INSPECT the clutch
pressure plate for wear
or damage. INSTALL a
new clutch pressure
plate as necessary.
REFER to Section 308 -
01 .
z Flywheel surface
damaged or glazed. z
INSPECT the flywheel
for damage or wear.
CARRY OUT a
flywheel runout check.
INSTALL a new
flywheel as necessary.
REFER to Section 303 -
01A for 3.8L engines or
Section 303 - 01B for
4.6L (2V) engines.
z Clutch chatter noise—
noise when clutch
pedal is released at
initial take- off. Clutch is
hard to engage and
disengage z
Pilot bearing worn,
damaged or not
correctly aligned in
bore. z
INSPECT the clutch
pressure plate release
fingers for uneven
wear, clutch
components burnt or a
seized pilot bearing.
INSTALL a new pilot
bearing as necessary.
REFER to Section 308 -
01 .
z Clutch vibration zLoose flywheel
bolts.
z Damaged or loose
clutch pressure
plate.
z Excessive flywheel
runout. z
Go To Pinpoint Test L .
z Transmission
rattling/clattering
noise— noise at idle or
on light acceleration
from a stop. Gear
selection difficult z
Gearshift lever joint
worn or damaged. z
INSTALL a new
gearshift lever. REFER
to Section 308 - 03A for
T50D transmissions or
Section 308 - 03B for
TR3650 transmissions. Klj . 41 ba
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z
The axle housing assembly consists of a cast center section with two steel tube assemblies and
a stamped differential housing cover (4033). The differential housing cover uses silicone sealant
as a gasket.
z The hypoid- design gearset consists of 7.5- inch ring gear (4209) and a drive pinion gear (4209).
Two opposed tapered roller bearings support the drive pinion in the axle housing (4010).
z A collapsible spacer (4662), located on the differential pinion shaft, maintains pinion bearing
preload. The pinion nut adjusts the preload.
z Differential bearing shims (4067), located between the differential bearing cups (4222) and the
rear axle housing, adjust the differential bearing preload and the ring gear backlash.
z The differential case (4204) is a one- piece design with two openings to allow for assembly of
the internal components and lubricant flow. Two opposed tapered roller bearings (differential
bearings) (4221) support the differential case in the axle housing. Removable bearing caps
(4010) retain the differential assembly in the axle housing.
z Inside the differential case, the differential pinion shaft (4211) supports two differential pinion
gears (4215). The pinion gears engage the differential side gears (4236), to which the axle
shafts (4234) are splined. The differential pinion shaft lock bolt (4241) retains the differential
pinion shaft in the differential case.
z An embossed metal tag, bolted to the differential housing cover, contains rear axle
identification. Klj . 3 ba
32003 Mustang Workshop Manual
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IN-
VEHICLE REPAIR
Drive Pinion Flange and Drive Pinion Seal
Removal 1. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
2. Remove the rear wheel and tire assemblies. For additional information, refer to Section 204 - 04 .
3. CAUTION: Remove the rear brake calipers to prevent drag during the drive pinion
bearing preload adjustment.
CAUTION: Do not allow the calipers to hang from the brake hoses.
Remove the rear brake caliper and support bracket from the knuckle as an assembly. Wire the
caliper and support bracket assembly out of the way. For additional information, refer to Section 206 - 04 .
4. CAUTION: Index- mark the driveshaft flange and pinion flange (4851) to maintain
initial balance during installation.
CAUTION: The driveshaft centering socket yoke fits tightly on the pinion flange
pilot. Never hammer on the driveshaft or any of its components to disconnect the yoke
from the flange. Pry only in the area shown, with a suitable tool, to disconnect the yoke
from the flange.
Disconnect and position the driveshaft out of the way. For additional information, refer to
SECTION 205-
02A: Rear Drive Axle/Differential — Ford 7.5-Inch Ring
Gear 2003 Mustang Workshop
Manual Special Tool(s)
2-
Jaw Puller
205- D072 (D97L-4221- A) or
equivalent Holding Fixture, Drive Pinion
Flange
205-
126 (T78P-4851- A) Installer, Drive Pinion Flange
205-
002 (TOOL- 4858-E) or
equivalent Klj . 1 ba
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Removal
1. Remove the differential assembly from the differential housing. For additional information, refer to Differential Case in this section.
2. CAUTION: Record the torque necessary to maintain rotation of the drive pinion gear
through several revolutions prior to removing the pinion flange (4851).
Remove the pinion flange. For additional information, refer to Drive Pinion Flange and Drive Pinion Seal in this section.
3. Force the rear axle drive pinion seal metal flange up. Install gripping pliers and strike with a hammer to remove the seal.
4. Remove the rear axle drive pinion shaft oil slinger (4670).
5. Using the special tool and a soft-faced hammer, drive the pinion assembly out of the outer differential pinion bearing (4621) and remove the drive pinion through the rear of the differential
housing (4010). Klj . 3 ba
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z
The axle housing assembly consists of a cast center section with two steel tube assemblies and
a stamped differential housing cover (4033). The differential housing cover uses silicone sealant
as a gasket.
z The hypoid- design gearset consists of 8.8- inch ring gear (4209) and a drive pinion gear (4209).
Two opposed tapered roller bearings support the drive pinion in the axle housing (4010).
z A collapsible spacer (4662), located on the differential pinion shaft, maintains pinion bearing
preload. The pinion nut (389546- S100) adjusts the preload.
z Differential bearing shims (4067), located between the differential bearing cups (4222) and the
rear axle housing, adjust the differential bearing preload and the ring gear backlash.
z The differential case (4204) is a one- piece design with two openings to allow for assembly of
the internal components and lubricant flow. Two opposed tapered roller bearings (differential
bearings) (4221) support the differential case in the axle housing. Removable bearing caps
(4010) retain the differential assembly in the axle housing.
z Inside the differential case, the differential pinion shaft (4211) supports two differential pinion
gears (4215). The pinion gears engage the differential side gears (4236), to which the axle
shafts (4234) are splined. The differential pinion shaft lock bolt (4241) retains the differential
pinion shaft in the differential case.
z An embossed metal tag, bolted to the differential housing cover, contains rear axle
identification. Klj . 3 ba
32003 Mustang Workshop Manual
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Removal
1. Remove the differential assembly from the differential housing. For additional information, refer to Differential Case in this section.
2. CAUTION: Record the torque necessary to maintain rotation of the drive pinion gear
through several revolutions prior to removing the pinion flange (4851).
Remove the pinion flange. For additional information, refer to Drive Pinion Flange and Drive Pinion Seal in this section.
3. Force the rear axle drive pinion seal metal flange up. Install gripping pliers and strike with a hammer to remove the seal.
4. Remove the rear axle drive pinion shaft oil slinger (4670).
5. Using the special tool and a soft-faced hammer, drive the pinion assembly out of the outer differential pinion bearing (4621) and remove the drive pinion through the rear of the differential
housing (4010). Puller, Bearing
205-
D064 (D84L-1123- A) or
equivalent Klj . 3 ba
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z
The differential housing (4010) consists of a cast aluminum housing and a cast aluminum
differential housing cover (4033). The differential housing cover uses silicone sealant as a
gasket.
z The hypoid- design gearset consists of a 8.8- inch differential ring gear and a drive pinion gear.
Two opposed pinion bearings (4621) (4630) support the drive pinion gear in the differential
housing.
z A differential drive pinion collapsible spacer (4662), located on the drive pinion gear shaft,
maintains pinion bearing preload. The pinion nut adjusts the preload.
z Differential bearing shims (4067), located between the differential bearing cups (4222) and the
differential housing, adjust the differential ring gear backlash and the differential bearing
preload.
z The differential case (4204) is a one- piece design with two openings to allow for assembly of
the internal components and lubricant flow. Two opposed differential bearings (4221) support
the differential case in the differential housing. Removable differential bearing caps retain the
differential assembly in the differential housing.
z Inside the differential case, the differential pinion shaft (4211) supports two differential pinion
gears (4215). The pinion gears engage the differential side gears (4236), to which the halfshafts 10 4033 Differential housing cover
11 4B416 Inboard CV joint stub shaft pilot bearing housing
seal
12 4B413 Inboard CV joint stub shaft pilot bearing
13 4010 Differential housing
14 4662 Differential drive pinion collapsible spacer
15 4670 Rear axle drive pinion shaft oil slinger
16 4851 Rear axle pinion flange
17 389546-
S100 Pinion nut
18 4859 Drive pinion oil seal deflector
19 4676 Rear axle drive pinion seal
20 4621 Pinion bearing
21 4616 Differential drive pinion bearing cup
22 56187-
S Bolt
23 — Drive pinion gear (part of 4209)
24 — Differential bearing cap
(part of 4010)
25 4628 Rear axle pinion bearing cup
26 4630 Pinion bearing
27 4663 Drive pinion bearing adjustment shim
28 4A321 Rear axle differential clutch shim
29 — Clutch plate (part of 4947)
30 — Clutch disc (part of 4947)
31 4236 Differential side gear
32 4214 Differential clutch spring
33 4215 Differential pinion gear
34 4947 Differential clutch pack Klj . 2 ba
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z
intake manifold gaskets
z cylinder head gaskets
z oil bypass filter
z oil filter adapter
z engine front cover
z oil filter adapter and filter body
z oil level indicator tube connection
z oil pressure sensor
Leakage Points— Under Engine—With Vehicle on Hoist
z oil pan gaskets (6710)
z oil pan sealer
z oil pan rear seal (6723)
z engine front cover gasket
z crankshaft front seal (6700)
z crankshaft rear oil seal (6701)
z crankshaft main bearing cap side bolts
z oil filter adapter and filter body
z oil cooler, if equipped
Leakage Points— With Transmission and Flywheel Removed
z crankshaft rear oil seal
z rear main bearing cap parting line
z rear main bearing cap and seals
z flywheel mounting bolt holes (with flywheel [6375] installed)
z camshaft rear bearing covers (6266) or pipe plugs at the end of oil passages
Oil leaks at crimped seams in sheet metal parts and cracks in cast or stamped parts can be detected
when using the dye method.
Compression Test— Compression Gauge Check
1. Make sure the oil in the crankcase is of the correct viscosity and at the correct level and that the battery (10655) is correctly charged. Operate the vehicle until the engine is at normal operating
temperature. Turn the ignition switch to the OFF position, then remove all the spark plugs
(12405).
2. Set the throttle plates in the wide- open position.
3. Install a compression gauge such as the Compression Tester in the No. 1 cylinder.
4. Install an auxiliary starter switch in the starting circuit. With the ignition switch in the OFF position, and using the auxiliary starter switch, crank the engine a minimum of five compression
strokes and record the highest reading. Note the approximate number of compression strokes Klj . 7 ba
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