Question about 1990 Chevrolet S 10 4WD

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Oil not getting to back rocker, push rod clear. had a new head gasket put on, pulled head to see if it was put on backwards, it was not. how do you replace lifter.

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  • Chevrolet Master
  • 6,982 Answers

Since you already have had it apart, you know at what point you can see the lifter. Lifter pulls straight up out of its bore, new one drops right in. If cam contact surface is worn concave, you need to replace cam as well. Always use assembly lube on lifter/cam contact surface when installing.

Posted on Apr 23, 2009

  • Richard Scordino Apr 23, 2009

    If you have the head off, then on most engines you have access to the lifters.On v6 and v8 intake only needs to be removed. Lifter pulls straight out of it's bore and new one drops back in. If cam contact surface is concave (noticably) it is worn...cam likely is worn as well. changing lifter is a waste of time at that point unless you replace cam as well.

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5 million made.
it's in the fsm book
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are you asking , how to set rockers ?

chapter 9 page 27
------------------text fsm---------------------
INSPECTION
Inspect the pivot surface area of each rocker arm.
Replace any that are scuffed, pitted, cracked or
excessively worn.
Inspect the valve stem tip contact surface of each
rocker arm and replace any rocker arm that is deeply
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INSTALLATION
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Removal
  1. Drain engine cooling system.
  1. Disconnect battery ground cable (14301) .
  1. Remove engine air cleaner (ACL) (9600) including air cleaner outlet tube (9B659) .
  1. Loosen drive belt tensioner (6B209). Remove drive belts (8620) .
  1. If LH cylinder head (6049) is being removed, perform the following:
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    1. Remove power steering pump/generator bracket retaining bolts. Leave hoses connected, place pump/bracket assembly aside in a position to prevent fluid from leaking out.
  1. If RH cylinder head is being removed, perform the following:
    1. Remove drive belts .
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    1. Remove positive crankcase ventilation valve (PCV valve) (6A666) .
  1. Remove upper intake manifold (9424) .
  1. Remove valve cover retaining bolts.
  1. Remove fuel injection supply manifold (9F792).
  1. Remove lower intake manifold as outlined.
  1. Remove exhaust manifolds (9430) as outlined.
  1. Loosen rocker arm seat retaining bolts enough to allow rocker arm (6564) to be lifted off the push rod (6565) and rotate to one side.
  1. Remove push rods . Identify position of each push rod . Push rods should be installed in their original position during assembly.
  1. Remove cylinder head retaining bolts and discard.
  1. Remove cylinder heads .
  1. Remove and discard old head gaskets (6051) .
Installation
  1. NOTE: Lightly oil all bolts and stud bolt threads before installation except those specifying special sealant.
    Clean cylinder head, intake manifold , valve cover (6582) and head gasket surfaces. If cylinder head was removed for head gasket replacement, check flatness and sealing areas for scratches of cylinder head and cylinder block gasket surfaces. Refer to Section 03-00 for procedure.
  2. Position new head gaskets onto cylinder block (6010) using cylinder head to block dowels (6A008) for alignment.

    Head Gasket


    a11431c.gif

  3. Position cylinder heads onto cylinder block .
  4. ani_caut.gif CAUTION: Always use new cylinder head bolts to ensure a leak-tight assembly. Torque retention with used bolts can vary, which may result in coolant or compression leakage at the cylinder head mating surface area.
    -ft).
  5. For 3.8L non-SC engine, tighten cylinder head retaining bolts in numerical sequence in three steps as follows:
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  6. ani_caut.gif CAUTION: Do not loosen all of the bolts at the same time, only work on one bolt at a time or possible damage to engine or leakage may occur.
    In sequence, loosen retaining bolts two to three revolutions and retighten bolts one at a time in the following manner:
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      • Go to next bolt in sequence.
    1. Short bolts:
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      • Go to next bolt in sequence.


      a11399c.gif


      Item Part Number Description 1 6010 Cylinder Block 2 - Locating Pin (2 Req'd) 3 N802515-S Cylinder Head Bolt (4 Req'd Each Side) 4 6049 Cylinder Head 5 N802516-S Cylinder Head Bolt (4 Req'd Each Side) 6 6A008 Cylinder Head to Block Dowel
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  8. For each valve, rotate crankshaft (6303) until valve tappet (6500) rests on the heel (base circle) of the camshaft lobe, before tightening rocker arm seat retaining bolts to 7-15 Nm (5-11 lb-ft) maximum.
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  11. Install lower intake manifold as outlined.
  12. Install fuel injection supply manifold .
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  14. Install upper intake manifold .Install spark plugs (12405) , if removed.
  15. Connect ignition wires to the spark plugs .
  16. If LH cylinder head is being installed, perform the following:
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    1. Install power steering pump (3A674) .
    1. Install power steering pump support bracket.If RH cylinder head is being installed, perform the following:
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  18. Connect battery ground cable .
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2010&c18=modelyear&c35=wsm%2ccylinder%20heads%2cssd%2c03-01a%2cin-vehicle%20service&s=1249x702&c=32&j=1.3&v=y&k=y&bw=910&bh=359&ct=lan&hp=n&[aqe]

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1 Answer

Stumper???????????????????????????????????????????????????


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If it is a push-rod engine, the push-rods may need to be matched to the head you are trying to use.
The condition you describe sounds like the push rods are too long.

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2 Answers

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Take the head back to the machine shop & tell them to fix it. For free.

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