Ford 2003 Mustang - Introduction; Safety Warnings and Vehicle Break-in

NOTE: Internal A/C compressor components are not serviced separately. The FS-10 A/C compressor is serviced only as an assembly. The A/C clutch pulley, A/C
clutch field coil (19D798) and the shaft seal are serviceable.
The FS-10 A/C compressor has the following characteristics:
 A ten-cylinder swashplate design utilizing the tangential design mount.
 A one-piece lip-type seal (installed from the front of the A/C compressor) is used to seal it at the shaft opening in the assembly.
 Five double-acting pistons operate within the cylinder assembly. The pistons are actuated by a swashplate that converts the rotating action of the shaft to a
reciprocating force.
 Reed-type discharge valves are located between the cylinder assembly and the head at each end of the A/C compressor.
 The A/C compressor uses PAG oil, or equivalent. This oil contains special additives required for the A/C compressor.
 The A/C compressor oil from vehicles equipped with an FS-10 A/C compressor may have some dark colored streaking while maintaining a normal oil
viscosity. This is normal for the A/C compressor and is caused by break-in wear of the piston rings.
The magnetic A/C clutch has the following characteristics:
 It drives the compressor shaft.
 When the battery positive voltage (B+) is applied to the A/C clutch field coil, the clutch plate and hub assembly is drawn toward the A/C clutch pulley.
 The magnetic force locks the clutch plate and hub assembly and the A/C clutch pulley together as one unit, causing the compressor shaft to rotate.
 When (B+) is removed from the A/C clutch field coil, springs in the clutch plate and hub assembly move the clutch plate away from the A/C clutch pulley.
A/C Compressor Pressure Relief Valve
An A/C compressor pressure relief valve is incorporated into the compressor A/C manifold and tube to:
 relieve unusually high refrigerant system discharge pressure buildups. For specifications regarding operating pressure(s), refer to Section 412-00.
 prevent damage to the A/C compressor and other system components.
 avoid total refrigerant loss by closing after the excessive pressure has been relieved.
A/C Condenser Core
Item Part Number Description
1 19D798 A/C clutch field coil
2 19D784 A/C clutch pulley
3 N805338-S2 Pulley snap ring
4 19D648 A/C clutch hub spacer
5 19D786 Disk and hub assembly
6 N805332-S2 A/C clutch bolt
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2003 Mustang Workshop Manual
4/29/2009
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS3B/~MUS~LEN/19/S
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