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Home >> Isuzu >> 2003 >> Axiom Base, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Lubrication System >> Engine Lubrication >> Oil Pump >> Reassembly
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Oil Pump: Reassembly

  1. Install drive gear (11).
  2. Install driven gear (10).
  3. Install oil pump cover (9) and first, loosely tighten all of the attaching screws. Next, tighten the attaching screws to the specified torque.

    Torque:  10 N.m (87 lb in)

    After installation, check that the gear rotates smoothly.

  4. Install relief valve (8) and apply engine oil to the relief valve and spring (7).
  5. Install spring (7).
  6. Install the plug (6).

    Torque:  8 N.m (69 lb in)

    Fig 1: Installing Relief Valve
    G02715028Courtesy of ISUZU MOTOR CO.
  7. Install oil pump assembly (5).
    • Carefully remove any oil from the cylinder body and the pump. Apply sealant (TB-1207B or equivalent) to the pump fitting face as shown in illustration. Take care that sealant is not applied to oil port surfaces. The oil pump assembly must be installed within 5 minutes after sealant application to prevent premature hardening of sealant.
    CAUTION: Do not apply an excessive amount of sealant to the contact surface. Applying too much sealant will overflow the contact surfaces. This could cause serious damage to the engine.
    • Attach oil pump assembly to cylinder body.
    • Tighten the oil pump fixing bolts.

      Torque:  25 N.m (18 lb ft)

    Fig 2: Apply Sealant To Pump Fitting Surface
    G02805402Courtesy of ISUZU MOTOR CO.
    Fig 3: Identifying Sequence For Tightening Fixing Bolts
    G02805404Courtesy of ISUZU MOTOR CO.
  8. Install the new oil seal (12). Apply engine oil to the oil seal lip before installation then use J-39202 oil seal Installer, install oil seal.
    Fig 4: Installing Oil Seal
    G02715031Courtesy of ISUZU MOTOR CO.
  9. Install oil strainer (4) with O-ring (13).

    Torque:  25 N.m (18 lb ft)

  10. Install oil pipe (3) with O-ring (13).

    Torque:  25 N.m (18 lb ft)

  11. Install crankcase with oil pan (2).
    • Remove oil on crankcase mounting surface and dry the surface.
    • Apply a proper 4.5 mm (0.7 in) wide bead of sealant (TB1207C or equivalent) to the crankcase mounting surface. The bead must be continuous.
    • The crankcase must be installed within 5 minutes after sealant application to prevent premature hardening of sealant.
    • Tighten fixing bolts to the specified torque.

      Torque:  10 N.m (87 lb in)

    Fig 5: Applying Sealant To Crankcase Mounting Surface
    G02805397Courtesy of ISUZU MOTOR CO.
  12. Install crankshaft timing pulley.
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