Cylinder Head and Valves
02
020
38
RG,RG34710,90 –19–03NOV99–1/1
Install Valve Seat Inserts
RG8319 –UN–06DEC97
Valve Seat Pilot Driver
RG8318 –UN–21MAY98
Installing Valve Seat Insert
A—JDG164A Pilot Driver
B—JDG1166 Adapter
1. Use JDG164A Pilot Driver (A) and JDG1166 Valve
Seat Insert Installing Adapter (B) to install valve seat
inserts in cylinder head.
2. Install valves and measure valve recess. (See CHECK
VALVE HEIGHT IN RELATION TO HEAD SURFACE,
earlier in this group.)
3. Grind valve seats as required to maintain correct valve
recess and valve face-to-seat seal. (See GRIND
VALVE SEATS earlier in this group.)
IMPORTANT: A common practice is to chill valve seat
inserts in a freezer before installing.
This chilling process allows for less
interference when pressing in valve
seats. Once inserts heat up to room
temperature, original press-fit is
restored.
RG,RG34710,91 –19–13AUG99–1/2
Install Valves
RG8306A –UN–06DEC97
Installing Valve Stem Seals
A—Valve Stem Seals
1. Lubricate valve stems and guides with AR44402 Valve
Stem Lubricant or clean engine oil.
NOTE: Valve must move freely in guide and seat properly
with inserts to form an effective seal.
2. Insert valves in head (if valves are reused, install in
same location from which removed).
3. Slide valve stem seals (A) over valve stems and onto
intake and exhaust valve guide tower until firmly
seated.
CTM100 (06APR04)
02-020-38
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=110
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