1992 Cadillac Brougham Service And Repair Manual

Page 7

Clean sealing mating surfaces. Apply 1/4" bead of Sealer (1052915) to valve cover. Sealer should be on inner side of bolt holes. Install and tighten valve cover. To complete installation, reverse removal procedure. NOTE:

Check and record compression before removing cylinder head. Ensure components are installed to original position and location.

CYLINDER HEAD Removal

1. Disconnect battery negative cable and drain coolant. Remove intake manifold, exhaust manifold(s) and valve cover(s) as previously described. Disconnect ground cable to cowl. Remove accessories and brackets as necessary. 2. Remove rocker arm bolts, rocker arm pivots, rocker arms and push rods. Note location for installation. If rear cylinder head bolts and/or push rods can not be removed, remove them with cylinder head. Remove cylinder head bolts, cylinder head and gasket. Inspection

1. Clean gasket surfaces. Check head and block gasket surface for warpage. Replace cylinder head if more than .006" (.15 mm) needs to be machined from original surface. Check for cracks and replace as necessary. Check head bolts for damage and stretching. Replace as necessary. Tap threads on bolts and in block. 2. Clean push rods in solvent and blow out oil passage with compressed air. Check ends of push rod for excessive wear and runout. If runout exceeds .015" (.38 mm), replace push rod. Apply Molykote to rocker arm contact points and push rod ends during installation. NOTE:

DO NOT use any sealant on head gaskets.

Installation

Properly install head gasket onto dowel pins. Install cylinder head over dowel pins and gasket. Dip head bolt threads in engine oil and allow to drain. Install head bolts. Tighten in sequence to specifications. See TORQUE SPECIFICATIONS table at end of this article. To complete installation, reverse removal procedure.


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