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HOMESERVICE MANUALSNISSAN-DATSUN2003FRONTIER BASE, STANDARDREPAIR AND DIAGNOSISENGINE MECHANICALENGINE MECHANICAL (KA24DE)TIMING CHAININSTALLATIONUPPER TIMING CHAIN
2003 Nissan-Datsun Frontier Base, Standard

Upper Timing Chain

2003 Nissan-Datsun Frontier Base, StandardSECTION Upper Timing Chain
  1. Install the lower timing chain and idler sprocket. Refer to "LOWER TIMING CHAIN " and "IDLER SPROCKET ".
    Fig 1: Installing Lower Timing Chain And Idler Sprocket
    G02102259Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Install the upper timing chain and sprockets, aligning the paint marks made during removal as shown.
    Fig 2: Installing Upper Timing Chain And Sprockets By Aligning Paint Marks
    G02102260Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Install the chain tensioner. Remove the pin holding the tensioner piston in the bore of the tensioner.
    • Check that the timing chain mating marks are aligned so that the timing chain is correctly installed.
      Fig 3: Identifying Timing Chain Mating Marks In Aligned Position
      G02102261Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Install the camshaft sprocket cover:
    CAUTION: Do not to tear or damage the cylinder head gasket.
    Do not let the upper timing chain slip or jump on the sprockets when installing the camshaft sprocket cover.
    • Use a scraper to remove all traces of liquid gasket from mating surfaces of the engine block and camshaft sprocket cover.
    • Apply liquid gasket on the head gasket surface.
    • Apply a continuous bead of liquid gasket to the cylinder head camshaft sprocket cover. Refer to "PRECAUTIONS FOR LIQUID GASKET " Use Genuine Silicone RTV Sealant or equivalent. Refer to , "Recommended Fluids and Lubricants".
  5. Install the rocker cover gasket on the rocker cover.
    • Apply a continuous bead of liquid gasket to the cylinder head camshaft sprocket cover. Refer to "PRECAUTIONS FOR LIQUID GASKET ". Use Genuine Silicone RTV Sealant or equivalent. Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS "
  6. Install the rocker cover. Tighten the bolts in the numerical order as shown.

    Rocker cover bolts: 8 -11 N.m (0.8 -1.1 kg-m, 69-95 in-lb). 

    Fig 4: Identifying Rocker Cover Bolt Tightening Order
    G02102262Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Install the distributor, align the distributor to the mark as shown.
    Fig 5: Aligning Distributor To Mark
    G02102263Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Install the vacuum hoses, electrical harnesses, connectors, and harness clamps.
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When to See a Mechanic

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

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