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GENERAL PROCEDURES
Purging —CIII Power Steering Pump
CAUTION: If the air is not purged from the power steering system correctly, premature
power steering pump failure can result. This condition can occur on pre- delivery vehicles with
evidence of aerated fluid or on vehicles that have had steering component repairs.
1. NOTE: A whine heard from the power steering pump may be caused by air in the system. The
power steering purge procedure must be performed prior to any component repair for which
power steering noise complaints are accompanied by evidence of aerated fluid.
Remove the reservoir cap. Check the fluid level. If necessary, fill the reservoir to the correct
level.
zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
2. Tightly insert the Vacuum Pump stopper into the reservoir.
3. Start the vehicle.
4. Using the special tool, apply maximum vacuum and maintain it for a minimum of three minutes with the engine speed set at idle. SECTION 211-
00: Steering System — General Information 2003 Mustang Workshop Manual Special Tool(s)
Vacuum Pump
416-
D002 (D95L-7559- A) or
Equivalent Klj . 1 ba
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GENERAL PROCEDURES
Fill
1. WARNING: Do not mix oil types, any mixture or any unapproved oil can lead to seal
deterioration and leaks. A leak can ultimately cause loss of fluid, which can result in a
loss of power steering assist.
Check the fluid level. If necessary, fill the reservoir to the correct level.
zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
2. Remove the fuel pump fuse from the battery junction box.
3. Raise the front wheels off the floor. For additional information, refer to Section 100 - 02 .
4. CAUTION: Do not crank the engine for more than 15 seconds at a time. Allow the
starter to cool for 1 minute before cranking again. Premature starter failure can occur.
CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Turn the steering wheel from stop- to-stop while cranking the engine.
5. Lower the vehicle.
6. CAUTION: Do not overfill the reservoir.
Check the fluid level. If necessary, fill the reservoir to the correct level. zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
7. Install the fuel pump fuse.
SECTION 211-
00: Steering System — General Information 2003 Mustang Workshop Manual Klj . 1 ba
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Page 741 of 4378

SPECIFICATIONS
a
Once torque is reached, continue turning to align slot in nut with cotter pin hole in tie- rod.
SECTION 211-
02: Power Steering 2003 Mustang Workshop Manual General Specifications
Item Specification
Lubricants
Motorcraft Multi-Purpose (ATF) Transmission Fluid XT
-2-QDX MERCON®
Silicone Dielectric Compound D7AZ-
19A331-A ESE-
M1C171- A Steering Gear Grease C3AZ-19578-
A ESW-
M1C87- A
Torque Specifications Description Nm lb-
ft lb-
in Front wheel spindle tie-
rod 100 74 —
Power steering pump mounting bolts (CII pump) 51 38 —
Power steering pump mounting bolts
(CIII pump) 25 18 —
Pressure line fitting
(CII pump) 40 30 —
Pressure line fitting
(CIII pump) 65 48 —
Pressure line fitting 30 22 —
Return line fitting
(steering gear) 30 22 —
Steering gear mounting nut 48 35 —
Steering intermediate shaft coupling pinch bolt 34 25 —
Tie-
rod end castellated nut 56
a 11
a —
Tie-
rod end jam nut 55 41 — Klj . 1 ba
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DESCRIPTION AND OPERATION
Power Steering
System View
Steering System Components —
3.8L Engine Steering System Components — 4.6L Engine SECTION 211-
02: Power Steering 2003 Mustang Workshop Manual Item Part Number Description
1 3A714 Power steering hose
2 3A674 Power steering pump
3 3493 Power steering hose
4 3504 Steering gear
5 3A130 Tie-
rod end 6 3493 Power steering hose
7 3D746 Power steering fluid cooler Klj . 1 ba
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REMOVAL AND INSTALLATION
Reservoir —
CIII Pump
Removal 1. Remove the bolts.
2. Disconnect the power steering hoses. Remove the reservoir.
Installation 1. To install, reverse the removal procedure.
2. Fill and leak check the power steering system. For additional information, refer to Section 211 -
00 .
SECTION 211-
02: Power Steering 2003 Mustang Workshop Manual Klj . 1 ba
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Page 751 of 4378
REMOVAL AND INSTALLATION
Pump —
CII
Removal and Installation 1. Disconnect the power steering hose. Remove and discard the seal ring.
2. Disconnect the power steering hose.
3. Remove the pulley. For additional information, refer to Pulley — CII Pump in this section.
4. Remove bolts and the power steering pump (3A674). SECTION 211-
02: Power Steering 2003 Mustang Workshop Manual Special Tool(s)
Teflon Seal Replacer Set
211D027 (D90P-
3517-A) or
equivalent Klj . 1 ba
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REMOVAL AND INSTALLATION
Pump —
CIII
Removal and Installation 1. Remove the pulley. For additional information, refer to Pulley — CIII Pump in this section.
2. Remove the bolt and bracket.
3. Disconnect the power steering hoses. Remove and discard the seal ring. 4. Remove bolts and the power steering pump (3A674). SECTION 211-
02: Power Steering 2003 Mustang Workshop Manual Special Tool(s)
Teflon Seal Replacer Set
211-
D027 (D90P-3517- A) or
equivalent Klj . 1 ba
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REMOVAL AND INSTALLATION
Pulley —
CII Pump
Removal 1. Remove the drive belt. For additional information, refer to Section 303 - 05 .
2. Using the special tool, remove the pulley.
Installation 1. Using the special tool, install the pulley.
SECTION 211-
02: Power Steering 2003 Mustang Workshop Manual Special Tool(s)
Pump Pulley Installer
211-
009 (T65P-3A733- C) Pump Pulley Remover
211-
016 (T69L-10300- B) Klj . 1 ba
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