A/C System Specifications

1998 Mercury Mountaineer 5.0 P, AWDSECTION A/C System Specifications
A/C SYSTEM SPECIFICATIONS

Application Specification
Compressor Type Ford FS-10 10-Cyl.
Compressor Belt Tension (1)
System Oil Capacity (2) 7 ozs.
Refrigerant (R-134a) Capacity 30 ozs.
System Operating Pressures (3)
Low Side 22-50 psi (1.5-3.5 kg/cm2 )
High Side 160-250 psi (11.2-17.6 kg/cm2 )
(1) Belt tension is automatically adjusted by tensioner pulley.
(2) Use YN-12b PAG Oil (Part No. F2AZ-19577-A).
(3) Approximate operating pressures with ambient temperature of 80Β°F (27Β°C).
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.