CYLINDER HEAD ASSEMBLY - REPLACE/REPAIR (Contd)
REMOVE INTAKE AND EXHAUST VALVES (8
AND 9) AND DISCARD COLLETS (11).
The following valve removal procedure is applicable to all
Compress valve spring (10) using a valve
Remove and discard collet (11).
Release spring pressure and remove
Remove spring retainer (12) and spring
Remove intake and exhaust valves (8 and
f. Remove and discard valve stem seals (13).
If cylinder head and valve components are not to be
assembled right away, lightly oil and wrap the parts after
inspection and before storing.
SEE CLEANING INSTRUCTIONS, PARA.
POLISH CYLINDER HEAD GASKET
SURFACES WITH SCOTCH-BRITE R PADS.
CLEAN CARBON FROM VALVES AND
REMARK ACCORDING TO LOCATION IN
Clean valve heads with a soft wire wheel.
Clean valve stems with crocus cloth.
Wash valves with fuel oil and wipe dry with
Remark valves according to their location in
the cyclinder head.
P-D-680 (Type II) is a flammable solvent that is
potentially dangerous to personnel. Keep away from
heat, sparks or open flame. Flashpoint of solvent is
138°F. Use only in a well ventilated area .Inhaling vapors
over a period of time can cause headache and
drowsiness. Use gloves to prevent irritation or
inflammation of the skin. Solvent absorbed through the
skin can result in internal disorders. If contact occurs,
wash the affected area with water for 15 minutes For
eyes, flush with water and then seek immediate medical
Eye shields must be worn when cleaning with a wire
brush. Flying rust and metal particles may cause injury to
CLEAN VALVE SPRINGS WITH DRY
CLEANING SOLVENT AND DRY
THOROUGHLY WITH COMPRESSED AIR.
INSPECT CYLINDER HEAD ASSEMBLY.
Check for uneven surfaces and warpage of
Place a straightedge along length of
cylinder head mating surface and check for
Measure gap under straightedge in areas
indicated in chart on page 3-39.
clean lint free wiping rag.