2. REMOVE VALVE STEM SEALS (8) AND (9) AND
VALVE SPRING GUIDES (10). DISCARD VALVE
STEM SEALS (8) AND (9).
1. USING INJECTOR BORE BRUSH, CLEAN
CARBON FROM INJECTOR NOZZLE SEATS.
2. SCRAPE GASKET MATERIAL AWAY FROM ALL
The remaining disassembly steps
shall be performed only as deemed
3. CLEAN DEPOSITS FROM COOLANT PASSAGES.
necessary after inspection.
3. USING AN APPROPRIATE DRIVER, REMOVE
VALVE STEM GUIDES (11).
Dry cleaning solvent P-D-680 is toxic
4. REMOVE VALVE SEATS (14) AND (15).
goggles and gloves and use only in a
well ventilated area. Avoid contact
Make sure tool only cuts the valve
with skin, eyes, and clothes and don't
seats and not the machined valve
breathe vapors. Do not use near
pockets of the cylinder head.
open flame or excessive heat. The
flash point is 100F-138F (380-590C).
If you become dizzy while using
cleaning solvent, get fresh air
Shavings or debris between the
immediately and get medical aid. If
cutter motor base and the head deck
contact with eyes is made, wash your
can cause serious damage to cylinder
eyes with water and get medical aid
a. Using Router and Cutter, set the cutter depth 1.0
to 1.5 mm (.03937 to 0.59 in.) from the bottom of
NONMETALLIC CLEANING PAD AND DIESEL
the valve seat pocket.
FUEL OR SOLVENT.
b. Cut a groove in valve seats (14) and (15) making
sure the cutter motor base remains flat against
the cylinder head while rotating the cutter motor
Wear eye protective goggles when
in a circular motion. Make sure groove is deep
using rotating tools for cleaning
enough for the expanding seat extractor to catch
in when expanded.
5. CLEAN CARBON DEPOSITS FROM THE VALVE
Using slide hammer and appropriate seat
POCKETS WITH A HIGH QUALITY STEEL WIRE
extractor, remove valve seats (14) and (15).
WHEEL INSTALLED IN A DRILL OR DIE