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REPAIR INSTRUCTIONS, PART 1
215
Figure 215 — Cylinder Head
REMOVAL PROCEDURE
1. Using the spring compressor, 9990210,
compress a valve spring set to access the
keepers.
2. Using a magnet, remove the keepers from
the valve stem.
3. Remove the valve spring set.
4. Using a suitable tool, remove the valve stem
seals.
5. Remove the valves.
216
Figure 216 — Valve Spring Keeper Removal
Valve Stem Seals
For standardization, the valve guide and seal are
used at the inlet locations as well as the exhaust
locations.
Cylinder Head Cleaning and
Inspection
Cleaning the cylinder head is important. While
cleaning the cylinder head, carefully inspect the
areas around the expansion plugs and the
cooling duct cover. If the cup or pipe plugs show
signs of leaking, they should be replaced. The
cylinder head should also be inspected for cracks
or other possible defects that may be reason for
replacement. If damage is not found until after the
engine is assembled, the cylinder head must be
removed, disassembled and rebuilt again.
SOLVENT TANK CLEANING
Cleaning solvent is flammable and toxic to the
eyes, skin and respiratory tract. Skin and eye
protection are required. Avoid repeated or
prolonged contact. Use only in a well
ventilated area.
Compressed air used for cleaning can create
airborne particles that may enter the eyes or
irritate the skin. Pressure must not exceed
207 kPa (30 psi). Eye protection is required.
Use only with effective chip guarding and
personal protective equipment
(goggles/shield, gloves, etc.).
Using care and caution at all times:
1. Fill a tank with a suitable solvent.
2. Immerse the parts in the solvent to loosen
dirt and debris.
3. Scrape remaining gasket material from the
cylinder head.
4. Using a wire brush or rotary wheel, remove
rust and other debris from the cylinder head.
5. Rinse the cylinder head making sure that all
surfaces are clean and free of debris.
6. Using compressed air, blow dry the cylinder
head.
1. Valve Spring Compressor
9990210
2. Valve Spring
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