Mazda MX-3 silhouetteMX-3

Inspection / Repair - Camshaft (oil clearance / cap installation)

B2-79prose procedure

Separate RH and LH cylinder-head bolt orders and thrust-cap marks (RH = "4", LH = "A"); V6 K8-ZE dual-bank DOHC. Distributor cap appears on the LH head.

Continued from B2-78

Camshaft journal oil clearance (continued)

  1. 3
    Position Plastigage atop each journal in the journal axial direction.
    Line drawing of the camshaft installed on the cylinder head with a strip of Plastigage placed atop a journal in the axial direction; labelled PLASTIGAGE.
  2. 4
    Do not rotate the camshaft when measuring the oil clearances.
  3. 5
    Install the thrust caps onto the cylinder heads. Hand tighten the bolts in five or six steps in the order shown, until the thrust caps fully seated on the cylinder heads.
    Install the thrust caps (RH is ⌄4⌅ mark, LH is ⌄A⌅ mark) first. Otherwise, camshaft can be broken or damaged.
    Two line drawings of the thrust caps for the RH (left) and LH (right) camshafts, with bolt tightening order 1-4 balloons; each thrust cap labelled THRUST CAP.
  4. 6
    Install the camshaft caps onto the cylinder heads. Hand tighten the bolts in five or six steps in the order shown, until the camshaft caps fully seated in the cylinder heads.
    Line drawing of the RH cylinder head camshaft caps from above with the bolt tightening order balloons (1 through 21) and the THRUST CAP labelled at center.
  5. 7
    Tighten the bolts in the order shown.
  6. 8
    Retighten the bolts in the order shown.
  7. 9
    Loosen the camshaft cap bolts in five or six steps in the order shown.
    Remove the thrust cap only after removing all camshaft caps. Otherwise, the thrust cap can be damaged.
    Two line drawings of the RH (left) and LH (right) cylinder head camshaft cap loosening order balloons (1 through 5+) for removal.
Tightening torque (step 7)
11.3 - 14.2N·m
Tightening torque (step 8 retighten)
11.3 - 14.2N·m
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