adjustment by removing the valve cover, located on the right side of the engine block, directly below the exhaust and
intake manifolds.
135. Cylinder Head (fig. 48)
a. Removal.
(1) Drain the cooling system (par. 128b).
(2) Loosen the radiator hose clamp and disconnect the hose from the cylinder head water outlet elbow (9).
(3) Remove the water outlet elbow mounting nuts (10) and lockwashers (12).
(4) Lift up the water outlet elbow (9) and remove it from the mounting studs (13). If the water outlet elbow (9)
sticks to the cylinder head (7), tap it lightly with a plastic hammer.
(5) Remove and discard the water outlet elbow gasket (8).
(6) Remove the hourmeter and hourmeter adapter (4).
(7) Remove the spark plugs and spark-plug leads.
(8) Remove the oil filter and oil-filter mounting plate (par. 123a).
(9) Disconnect the leads from the water temperature gage transmitter and remove the transmitter and the
suppression capacitor.
(10) Remove the cylinder head mounting screws (37) and flatwashers (36). Check to see that all screws (37) are
removed before attempting to remove the cylinder head (7).
(11) Remove the cylinder head (7). If the cylinder head (7) sticks to the engine block (21), tap it with a plastic
hammer.
Note. Do not drive a screwdriver, chisel, or other sharp instrument between the cylinder head and engine
block, as this may cause serious damage to the cylinder head and engine block.
(12) Remove the cylinder head gasket (16). Use the old gasket only in an emergency. If possible, use a new
gasket when reassembling the cylinder head.
b. Cleaning. Clean the cylinder head with a stiff wire brush and a carbon scraper. Remove all carbon deposits from
the piston tops and combustion chambers on the cylinder head. Clean accumulated rust, carbon, and sediment from the
spark-plug holes and mounting holes. Wash the cylinder head in cleaning solvent and blow it dry with compressed air.
Wash the mounting screws and washers in cleaning solvent and clean the threads with a stiff wire brush.
c. Inspection. Inspect the cylinder head for flaws, breaks, cracks, and warpage. Check the spark-plug holes for
damaged or stripped threads. Inspect the mounting holes in the engine block and clean or tap them if necessary.
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