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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Manual Transmission & Clutch - General Information) >> General Procedures >> Clutch Disc Check

Clutch Disc Check

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools

Illustration Tool Name Tool Number
GF0000998Courtesy of FORD MOTOR CO.
Brake/Automobile Brake Drum System with Vacuum 164-R3622 or equivalent
GF0000025Courtesy of FORD MOTOR CO.
Dial Indicator/Magnetic Base 100-D002 (D78P-4201-B) or equivalent
WARNING: DANGER, do not breathe dust or use compressed air to blow dust from storage containers or friction components. Use a low pressure/wet cleaning method, such as a solvent based brake and clutch cleaner to remove all adherent dust. Friction component dust may be a cancer and lung disease hazard. Exposure to potentially hazardous components may occur if dusts are created during repair of friction components, such as brake pads and clutch discs. Exposure may also cause irritation to skin, eyes and respiratory tract, and may cause allergic reactions and/or may lead to other chronic health effects. If irritation persists, seek medical attention or advice. Failure to follow these instructions may result in serious personal injury.
NOTE: The 5.4L application is an assembly of discs and plates. It is serviced as an assembly only.
  1. Check the clutch disc for the following conditions. Install a new clutch disc as necessary.
    • Lining surface for hardening
    • Presence of oil
    • Loose clutch disc lining rivet
    • Cracking, scoring or other surface marks
      • Use an emery cloth to remove minor imperfections in the clutch disc lining surface
    • Discoloration
  2. Fig 1: Checking Clutch Disc For Damage
    GF0015718Courtesy of FORD MOTOR CO.
  3. Check for a worn clutch disc lining. Measure the minimum allowable depth to the rivet heads with a slide caliper. Install a new clutch disc as necessary.
  4. Fig 2: Measuring Minimum Allowable Depth To Rivet Heads With A Slide Caliper
    GF0015719Courtesy of FORD MOTOR CO.
  5. Using a suitable lathe, check the maximum allowable runout of the clutch disc. Install a new clutch disc as necessary.
  6. Fig 3: Checking Maximum Allowable Runout Of Clutch Disc Using A Suitable Lathe
    GF0001000Courtesy of FORD MOTOR CO.