Oil pump installation instructions

Discussion in 'Chevy Truck Forum' started by Mike n, Feb 10, 2012.

  1. Mike n

    Mike n Full Member

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    I'm praying that someone might know or know where I can get step by step install directions on the installation of a new oil pump on a 2004 Chevy silverado 4.8L 2wd ? I'm at my whits end I can't get oil flow to the oil filter, a friend suggested I pack the pump with vasoline ? I don't even get flow to the pump from the suction tube in the oil pan?????
     
  2. chevychase

    chevychase Senior Moderator Staff Member

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  3. chevychase

    chevychase Senior Moderator Staff Member

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    Also found info that said 4.8 were bad for bad cam bearings ..at your mileage hope not try the pump prime should work.
     
  4. MikeG

    MikeG Full Member

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    [h=5]4.8L, 5.3L & 6.0L Engines[/h][TABLE="class: image, align: center"]
    [TR]
    [TD][​IMG]
    Remove or disconnect the following:
    • Engine front cover
    • Oil pan
    • Oil pump screen bolt and nuts
    • Oil pump screen with O-ring seal.

    • O-ring seal from the pump screen. Discard the O-ring seal.
    • Remaining crankshaft oil deflector nuts.
    • Crankshaft oil deflector
    • Oil pump bolts
    • [TABLE="class: notetable, align: center"]
      [TR]
      [TD="class: noteclass_note"]NOTE [/TD]
      [/TR]
      [TR]
      [TD]Do not allow dirt or debris to enter the oil pump assembly, cap ends as necessary.
      [/TD]
      [/TR]
      [/TABLE]
      • Oil pump
      [TABLE="class: notetable, align: center"]
      [TR]
      [TD="class: noteclass_note"]NOTE [/TD]
      [/TR]
      [TR]
      [TD]The internal parts of the oil pump assembly are not serviced separately (excluding the spring). If the oil pump components are worn or damaged, replace the oil pump as an assembly. Do not attempt to repair the wire mesh portion of the pump and screen assembly.
      [/TD]
      [/TR]
      [/TABLE]

      To install:
      [TABLE="class: notetable, align: center"]
      [TR]
      [TD="class: noteclass_note"]NOTE [/TD]
      [/TR]
      [TR]
      [TD]Inspect the oil pump and engine block oil gallery passages. These surfaces must be clear and free of debris or restrictions.
      [/TD]
      [/TR]
      [/TABLE]
      1. Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
      2. Install or connect the following:
        • Oil pump bolts. Tighten the oil pump bolts to 18 ft. lbs. (25 Nm).
        • Crankshaft oil deflector
        [TABLE="class: notetable, align: center"]
        [TR]
        [TD="class: noteclass_note"]NOTE [/TD]
        [/TR]
        [TR]
        [TD]Lubricate a NEW oil pump screen O-ring seal with clean engine oil.
        [/TD]
        [/TR]
        [/TABLE]
        • NEW O-ring seal onto the oil pump screen
        [TABLE="class: notetable, align: center"]
        [TR]
        [TD="class: noteclass_note"]NOTE [/TD]
        [/TR]
        [TR]
        [TD]Push the oil pump screen tube completely into the oil pump prior to tightening the bolt. Do not allow the bolt to pull the tube into the pump.
        [/TD]
        [/TR]
        [/TABLE]
      3. Align the oil pump screen mounting brackets with the correct crankshaft bearing cap studs.
      4. Install or connect the following:
        • Oil pump screen
        • Oil pump screen bolt and the deflector nuts. Tighten the bolt to 106 inch lbs. (12 Nm) and the nuts to 18 ft. lbs. (25 Nm).
        • Oil pan
        • Engine front cover
          [TABLE="class: image, align: center"]
          [TR]
          [TD][​IMG]
          [/TD]
          [/TR]
          [TR]
          [TD="class: img_captionRow"]Exploded view of the oil pump mounting—4.8L, 5.3L and 6.0L engines

          To install:
          [TABLE="class: notetable, align: center"]
          [TR]
          [TD="class: noteclass_note"]NOTE [/TD]
          [/TR]
          [TR]
          [TD]Inspect the oil pump and engine block oil gallery passages. These surfaces must be clear and free of debris or restrictions.
          [/TD]
          [/TR]
          [/TABLE]
          1. Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
          2. Install or connect the following:
            • Oil pump bolts. Tighten the oil pump bolts to 18 ft. lbs. (25 Nm).
            • Crankshaft oil deflector
            [TABLE="class: notetable, align: center"]
            [TR]
            [TD="class: noteclass_note"]NOTE [/TD]
            [/TR]
            [TR]
            [TD]Lubricate a NEW oil pump screen O-ring seal with clean engine oil.
            [/TD]
            [/TR]
            [/TABLE]
            • NEW O-ring seal onto the oil pump screen
              • NEW O-ring seal onto the oil pump screen
              [TABLE="class: notetable, align: center"]
              [TR]
              [TD="class: noteclass_note"]NOTE [/TD]
              [/TR]
              [TR]
              [TD]Push the oil pump screen tube completely into the oil pump prior to tightening the bolt. Do not allow the bolt to pull the tube into the pump.
              [/TD]
              [/TR]
              [/TABLE]

            • Align the oil pump screen mounting brackets with the correct crankshaft bearing cap studs.
            • Install or connect the following:
              • Oil pump screen
              • Oil pump screen bolt and the deflector nuts. Tighten the bolt to 106 inch lbs. (12 Nm) and the nuts to 18 ft. lbs. (25 Nm).
              • Oil pan
              • Engine front cover
                [TABLE="class: image, align: center"]
                [TR]
                [TD][​IMG]
                [/TD]
                [/TR]
                [/TABLE]
          [/TD]
          [/TR]
          [TR]
          [TD="class: img_enlargelinkRow"]Click to Enlarge [/TD]
          [/TR]
          [/TABLE]

    [/TD]
    [/TR]
    [/TABLE]
     
  5. chevychase

    chevychase Senior Moderator Staff Member

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    Man hard to find took me a half hour...i have one with a few pics but will not post because i know Mikeg had a time finding that one.
    Seems would be plenty of info on that ..sure found for others though.
     
  6. chevychase

    chevychase Senior Moderator Staff Member

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    Oh sure going to mark the hard to find sob lol
     
  7. MikeG

    MikeG Full Member

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    Not too hard to find, I used ChiltonLibrary. Only issue is the diagrams wouldn't post......oh well. If you have something with pics post it; might give Mike n a little more help/ insight.
     
  8. chevychase

    chevychase Senior Moderator Staff Member

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