TM 5-3805-280-24-2
Cylinder Head and Valves
INSTALL VALVE SEAT INSERTS
05
42
1. Use JDG676 Pilot Driver (A) and JDG675 Valve Seat
Insert Installing Adapter (B) to install valve seat inserts
in cylinder head.
Use one end of JDG675 Adapter to install intake valve
seat inserts and the other end to install exhaust valve
seat inserts.
2. Install valves and measure valve recess. (See
MEASURE VALVE RECESS IN CYLINDER HEAD,
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.)
A--Pilot Driver
B--Adapter
RG,05,DT7350 1911NOV971/1
INSTALL VALVES
1. Lubricate valve stems and guides with AR44402 Valve
Stem Lubricant or clean engine oil.
NOTE: Valves must move freely in guide and seat
properly in head to form an effective seal.
2. Insert valves in head (if valves are reused, install in
same location from which removed).
3. Use JDG678 Valve Stem Seal Installer (A) to slide
valve stem seals (B) over valve stems and onto valve
A--Seal Installer
guide tower (C).
B--Valve Stem Seals
C--Valve Guide Tower
NOTE: JDG678 Installer may also be used to install
oversize valve stem seals on oversize valve
stems.
4. Install valve springs and rotators.
Continued on next page
RG,05,DT7349 1911NOV971/2
13-100
