Mazda MX-3 silhouetteMX-3

Clutch Cover, Clutch Disc

H-19prose procedure

K8 DOHC engine block is aluminum (no magnetic base); use SST to hold dial indicator. B6 DOHC uses a magnetic base.

Clutch Cover Inspection (continued)

  1. 3
    The K8 DOHC engine is made of aluminum, so the magnet will not hold the dial indicator to the block as it would for the B6 DOHC engine. Therefore, use the SST to hold the dial indicator when checking the runout of the diaphragm spring fingers for the K8 DOHC engine.
    K8 DOHC clutch cover: dial indicator held with SST 49 E011 1A0 to check runout of the diaphragm spring fingers, since the aluminum block will not hold a magnetic base.
  2. 4
    Rotate the flywheel and check for misaligned diaphragm spring fingers. Replace the clutch cover if not as specified.
    Maximum: 0.6 mm {0.024 in}
    B6 DOHC clutch cover: dial indicator mounted with a magnetic base on the block to check runout of the diaphragm spring fingers.
Diaphragm spring finger runoutMaximum
0.6mm {0.024 in}

Clutch Disc

Inspection

  1. 1
    Inspect the lining surface for burning and oil contamination. Remove minor scoring or burning with emery paper. Replace the clutch disc if it is badly burned or oil soaked.
    Inspecting the clutch disc lining surface for burning and oil contamination, with a hand removing minor scoring/burning using emery paper.
  2. 2
    Inspect for loose facing rivets and damper rubbers. Replace the clutch disc if either is loose.
  3. 3
    Measure the thickness of the lining at a rivet head on both sides with vernier calipers. Replace the clutch disc if its thickness is less than minimum.
    Thickness: 0.3 mm {0.012 in} min.
    Measuring the clutch disc lining thickness at a rivet head with vernier calipers; magnified inset shows the minimum thickness 0.3 mm {0.012 in} from rivet head to lining surface.
  4. 4
    Measure the clutch disc runout with a dial indicator. Replace the clutch disc if runout is excessive.
    Runout: 0.7 mm {0.027 in} max.
    Measuring clutch disc runout with a dial indicator while the disc is mounted on a shaft between V-blocks.
Lining thicknessmin.
0.3mm {0.012 in}
Clutch disc runoutmax.
0.7mm {0.027 in}

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