2003 FORD MUSTANG differential

4 4222 Differential bearing cup
5 4067 Differential bearing shim
6 4216 Rear axle differential gear case bolt
7 4204 Differential case
8 — Ring gear (part of 4209 gearset)
9 — Bearing cap (part of 4010)
10 4010 Rear axle housing
11 373098-
S Filler plug
12 4662 Collapsible spacer
13 4670 Rear axle drive pinion shaft oil slinger
14 4676 Rear axle drive pinion seal
15 4851 Pinion flange
16 389546-S100 Pinion nut
17 4621 Differential pinion bearing
18 2C026 Rear brake disc
19 — Axle shaft flange (part of 4234)
20 2C189 Rear brake anti-
lock sensor indicator 21 2552 Rear disc brake caliper
22 N601951-S2 Bolt
23 N804361-S100 Clip
24 — Bolt (part of 4010)
25 2C190 Rear brake anti-
lock sensor 26 2C101 Left hand rear disc brake adapter
27 2C100 Right hand rear disc brake adapter
28 N8015163-S190 Caliper anchor bolt
29 2C028 Rear wheel brake disc shield
30 N602726-S2 Bolt (3 req'd)
31 4616 Differential drive pinion bearing cup
32 4628 Rear axle pinion bearing cup
33 4630 Differential pinion bearing
34 — Drive pinion gear (part of 4209 gearset)
35 4663 Drive pinion bearing adjustment shim
36 — Bolt (part of 4010)
37 4241 Differential pinion shaft lock bolt
38 4211 Differential pinion shaft
39 4N237 U-
washer 40 383548 Bolt
41 — Rear axle identification tag (part of 4001)
42 4033 Differential housing cover
43 4230 Differential pinion thrust washer
44 4215 Differential pinion gear Klj . 2 ba
32003 Mustang Workshop Manual
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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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IN-
VEHICLE REPAIR
Axle Shaft
Removal 1. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
2. Remove the wheel and tire assembly. For additional information, refer to Section 204 - 04 .
3. Remove the rear brake disc (2C026). For additional information, refer to Section 206 - 04 .
4. Remove the differential housing cover (4033) and drain the lubricant. For additional information, refer to Differential Housing Cover in this section.
5. Remove the differential pinion shaft (4211). 1. Remove the differential pinion shaft lock bolt (4241).
2. Remove the differential pinion shaft.
6. CAUTION: Do not damage the rubber O- ring in the axle shaft groove.
Remove the U- washer (4N237).
1. Push the axle shafts (4234) inboard.
2. Remove the U- washer.
7. CAUTION: Damage to the rear brake anti- lock sensor (2C190) may occur if it is not
removed before the axle shaft.
Carefully remove the rear brake anti- lock sensor. For additional information, refer to Section SECTION 205-
02B: Rear Drive Axle/Differential — Ford 8.8-Inch Ring
Gear 2003 Mustang Workshop
Manual Klj . 1 ba
42003 Mustang Workshop Manual
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1. Position the two U-
washers on the button end of the axle shaft.
2. Pull the axle shaft outward.
4. NOTE: If a new pinion shaft lock bolt is unavailable, coat the threads with Threadlock and
Sealer EOAZ- 19554-AA or equivalent meeting Ford specification WSK-M2G351- A5 prior to
installation.
Install the differential pinion shaft. 1. Align the hole in the differential pinion shaft with the case lock bolt hole.
2. Install a new differential pinion shaft lock bolt.
5. Install the differential housing cover and fill the rear axle with the specified lubrication. For additional information, refer to Differential Housing Cover in this section.
6. Install the rear brake anti- lock sensor. For additional information, refer to Section 206 - 09A .
7. Install the rear brakes. For additional information, refer to Section 206 - 04 .
8. Install the tire and wheel assembly. For additional information, refer to Section 204 - 04 .
9. Lower the vehicle. Klj . 3 ba
42003 Mustang Workshop Manual
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IN-
VEHICLE REPAIR
Rear Wheel Bearing and Axle Shaft Oil Seal
Removal 1. Remove the axle shaft (4234). For additional information, refer to Axle Shaft in this section.
2. NOTE: If the wheel bearing oil seal is leaking, the axle housing vent may be plugged.
Using the special tools, remove the rear wheel bearing and wheel bearing oil seal.
SECTION 205-
02B: Rear Drive Axle/Differential — Ford 8.8-Inch Ring
Gear 2003 Mustang Workshop
Manual Special Tool(s)
Adapter for 303-
224
205- 153 (T80T-4000- W) Installer, Axle Shaft Bearing
205-
124 (T78P-1225- A) Installer, Rear Axle Oil Seal
205-
390 (T97T-1177- B) Remover, Axle Bearing
205-
219 (T85L-1225- AH) Slide Hammer
100-
001 (T50T-100- A) Klj . 1 ba
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

IN-
VEHICLE REPAIR
Differential Housing Cover
Removal 1. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
2. NOTE: Empty the lubricant into a clean container for reuse.
Remove the differential housing cover (4033). 1. Remove the 10 bolts and drain the lubricant from the differential housing (4010).
2. Remove the differential housing cover.
Installation 1. CAUTION: Make sure the machined surfaces on both the differential housing and
the differential housing cover are clean and free of oil before applying the new silicone
sealant. To prevent contamination, cover the inside of the rear axle (4001) prior to
cleaning the machined surface.
Clean the differential housing and the differential housing cover gasket mating surfaces.
2. CAUTION: Install the differential housing cover within 15 minutes of applying the
silicone, or it will be necessary to remove and reapply new sealant.
Apply a continuous bead of sealant of the specified thickness to the differential housing cover.
zUse Clear Silicone Rubber D6AZ- 19562-AA or equivalent meeting Ford specifications
ESB- M4G92- A.
SECTION 205-
02B: Rear Drive Axle/Differential — Ford 8.8-Inch Ring
Gear 2003 Mustang Workshop
Manual Klj . 1 ba
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

3.
NOTE: If possible, allow one hour before filling the axle with lubricant to make sure the silicone
sealant has cured.
Install the differential housing cover. 1. Install the differential housing cover.
2. Install the 10 bolts.
4. NOTE: If it is necessary to refill a Traction- Lok® axle with new lubricant, add 118 ml (4 oz) of
Additive Friction Modifier C8AZ-19B546-A or equivalent meeting Ford specification EST-
M2C118- A before filling the axle with the new lubricant.
NOTE: In-vehicle repair refill capacities are determined by filling the rear axle with the specified
lubricant to 6.4- 14.3-mm (1/4-9/16- in) below the bottom of the fill hole.
Fill the rear axle to the level shown, approximately 1.66-1.77- liters (3.5-3.75-pints) of lubricant,
and install the filler plug.
zUse SAE 75W- 140 High Performance Rear Axle Lubricant F1TZ-19580- B or equivalent
meeting Ford specification WSL- M2C192-A.
5. Lower the vehicle. Klj . 2 ba
32003 Mustang Workshop Manual
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IN-
VEHICLE REPAIR
Axle Housing Bushing
Removal CAUTION: Suspension fasteners are critical parts because they affect performance of vital
components and systems and their failure can result in major service expense. A new part with
the same part number must be installed if installation becomes necessary. If substitution is
necessary, the part must be of the same finish and property class. Torque values must be used
as specified during reassembly to make sure of correct retention of these parts.
1. Remove the upper arm and bushing (5500). For additional information, refer to Section 204 - 02 .
2. Using the special tools, remove the bushing.
Installation 1. Using the special tools, install the bushing.
SECTION 205-
02B: Rear Drive Axle/Differential — Ford 8.8-Inch Ring
Gear 2003 Mustang Workshop
Manual Special Tool(s)
Axle Suspension Bushing Set
204-
S030 (T78P-5638- A) Klj . 1 ba
22003 Mustang Workshop Manual
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