Disassembly and Assembly

DISASSEMBLY
1. Remove cylinder heads (6049).

CAUTION: If cylinder head valve components are to be reused, mark position of valve components to make sure that they are assembled in their original positions.

2. Compress valve springs (6513) using Valve Spring Compressor Set T89P-6565-A and Valve Spring Compressor Set T87C-6565-A and remove valve spring retainer keys (6518), valve spring retainers (6514) and valve springs.
3. Remove intake valves (6507) and exhaust valves (6505) from cylinder heads.
4. Inspect cylinder heads, valve guides, valves, valve springs, valve spring retainers, valve spring retainer keys, camshafts (6250), valve tappets (6500) and rocker arms (6564). Replace components as required.





5. Remove valve stem seals (6571) using Valve Stem Seal Remover.





6. Remove valve guides from cylinder heads if necessary upon inspection by using Valve Guide Remover/Replacer T89P-6510-A to drive valve guides out from the bottom of the cylinder head.
7. Remove pipe plugs and alignment dowels from cylinder heads as necessary to clean cylinder heads.

ASSEMBLY





WARNING: EYE PROTECTION IS REQUIRED TO BE WORN DURING USE OF COMPRESSED AIR. FAILURE TO WEAR EYE PROTECTION COULD RESULT IN POSSIBLE PERSONAL INJURY.

NOTE: Clean cylinder head gasket surface with a toluene-based paint thinner or gasket remover. If gasket material remains on cylinder head after cleaning, use a plastic-tipped scraper and Scotch Brite(r) or 600 grit sandpaper to remove remaining material.

1. Clean gasket material, dirt and debris from cylinder heads. Wash cylinder heads with a suitable soap and water solution. Dry cylinder heads completely using compressed air.
2. If removed, install pipe plugs and alignment dowels to cylinder heads. Apply Pipe Sealant with Teflon(R) D8AZ-19554-A or equivalent meeting Ford specification WSK-M2G350-A2 and ESR-M18P7-A to pipe plugs prior to installation. Tighten pipe plugs as follows:
- 1/4 inch pipe plug: 12-16 Nm (9-12 ft. lbs.)
- 1 inch pipe plug: 80-100 Nm (59-74 ft. lbs.)





3. Install valve guides into cylinder heads if removed, using Valve Guide Remover Replacer T89P-6510-A. Lubricate valve guides and install by driving valve guides into cylinder heads from top of cylinder heads.





4. Using Valve Stem Seal Replacer T94P-6510-CH install valve stem seals onto cylinder head valve guides.
5. Lubricate valve stems and guides with Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford specification ESR-M99C80-A and install valves into cylinder heads.
6. Using Valve Spring Compressor Set T89P-6565-A and Valve Spring Compressor Set T87C-6565-A, install valve springs, valve spring retainers and valve spring retainer keys onto cylinder head and valves.

CAUTION: Do not install valve spring spacers unless necessary. Use of valve spring spacers in excess of recommendations will result in over-stressing valve springs and over-loading camshaft lobes. Over-stressing and over-loading could lead to valve spring breakage and/or worn camshaft lobes.





7. Measure assembled height of valve spring from top of spring seat to underside of valve spring retainer with dividers. Check dividers against a scale. If assembled valve spring height is greater than 39-40 mm (1.535-1.575 inch), install necessary spacers between cylinder head spring seat and valve spring to bring assembled height to 39-40 mm (1.535-1.575 inch).