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Home >> Mitsubishi >> 1987 >> Van LS >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.8L 4-CYL - VIN [G], 2.0L 4-CYL [D], 2.4L 4-CYL [L] >> Removal & Installation >> Jet Valves >> Valve Guides

Valve Guides

  1. Ensure valve stem is to specification and check valve stem clearance. If clearance exceeds service limits, replace valve guide with next oversize.
    VALVE GUIDE OVERSIZES

    Size Mark Guide Size: (mm) Cylinder Head Bore: In. (mm)
    5 .05 .5138-.5145 (13.05-13.07)
    25 .25 .5216-.5224 (13.25-13.27)
    50 .50 .5315-.5322 (13.50-13.52)
    Fig 1: Removing & Installing Valve Guide Install valve guide at room temperature.
    G82069
  2. Using a Valve Guide Remover/Installer (MD998115), drive out each guide toward combustion chamber. Machine guide bore in cylinder head to outside diameter of guide being installed. See Fig 1.
  3. To install, drive new guides in from top of head, using Remover/Installer (MD998115) with adapter, to ensure guide is installed to predetermined height. Guide should protrude.59" (15.0 mm) above head surface when properly installed. Check guide I.D. and ream as necessary.
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