Section 12-03A: Air Conditioning System—Manual A/C-Heater
1994 Mustang Workshop Manual
REMOVAL AND INSTALLATION

Refrigerant Lines

 

Removal and Installation

  1. Discharge the refrigerant from the A/C system at the low-pressure service access gauge port valve located on the suction line following the recommended service procedures. Observe all safety precautions. Refer to Section 12-00.
  1. Disconnect and remove the refrigerant line using a wrench on each side of each fitting or the special tool required for spring lock couplings at the A/C condenser core (19712) .
  1. Route the new refrigerant line with the protective caps installed as shown in the applicable illustrations:
  1. Connect A/C condenser core lines to spring lock couplings.
  1. Connect all other refrigerant lines into the system using new O-ring seals lubricated with clean refrigerant oil. Use two wrenches when tightening the fittings.
  1. Leak-test, evacuate and charge the refrigerant system following the recommended procedures and safety precautions. Refer to Section 12-00.


5.0L Engine





Item Part Number Description
1 — From Evaporator Core Outlet Tube
2 — Low Side Service Valve Body (Part of 19D734)
3 19D734 A/C Manifold and Tube
4 19703 A/C Compressor
5 19712 A/C Condenser Core
6 — To A/C Evaporator Core
7 — From A/C Compressor
8 19835 Condenser to Evaporator Tube
9 19D594 A/C Pressure Cut-Off Switch
10 — High Side Service Valve Body (Part of 19D734)
11 19C913 Suction Accumulator/Drier
12 — To A/C Evaporator Core
13 — Suction Hose From Accumulator (Part of 19C836)


3.8L Engine





Item Part Number Description
1 — From Evaporator Core Outlet Tube
2 — Low Side Service Valve Body (Part of 19D734)
3 19D734 A/C Manifold and Tube
4 19703 A/C Compressor
5 — High Side Service Valve Body (Part of 19D734)
6 — From A/C Compressor
7 19712 A/C Condenser Core
8 — To A/C Evaporator Expansion Valve Mounting Bracket
9 19D594 A/C Pressure Cut-Off Switch
10 19835 Condenser to Evaporator Tube
11 19C913 Suction Accumulator/Drier
12 — To A/C Evaporator Core
13 — Suction Hose From Accumulator (Part of 19C836)
 

Heater Water Hoses

Removal

  1. Partially drain cooling system.
  1. Disconnect heater water hoses (18472).
 

Installation

  1. Apply ESE-M99B144-A or ESA-M99C45 or ESB-M97B18-C lubricant or equivalent to the inside of the heater water hoses .
  1. Install new heater water hoses and clamps.
  1. Tighten new clamps to 1.8-2.5 Nm (16-22 lb-in).


Heater Water Hose Routing





Item Part Number Description
1 18472 3.8L Inlet Heater Water Hose
5.0L Inlet Heater Water Hose
2 18472 3.8L Outlet Heater Water Hose
5.0L Outlet Heater Water Hose