TM 9-4940-549-14&P
(1)
Install valve into cylinder head and repeat grinding pro-
cess until a bright, silver-like band of uniform width ap-
pears on both valve and seat.
(m)
Remove valve. Clean valve and valve seat to remove all
traces of grinding compound. Dry valve and valve seat
thoroughly.
(n)
Make ten or twelve pencil marks, equally spaced, across
valve seat.
Install valve, press firmly, and rotate approximately one
(0)
quarter of a turn.
Remove valve and observe pencil marks. If marks are
(p)
rubbed out, valve is seating properly. If all pencil marks
are not rubbed out, repeat grinding process.
Mark each valve to insure that it will
be installed in the seat into which it
was ground.
Repeat grinding process for each valve.
(q)
d.
Assembly.
(1) Lubricate stem of intake valves (30) and exhaust valves (31)
and insert into valve guides (39).
(2) Install seals (32), valve springs (29), spring seats (28) and
locks (27).
NOTE
Seals are installed on intake valves
only.
(3) Assemble rocker arm assembly as follows:
(a) Install adjusting screws (12) into rocker arms (11).
(b) Assemble springs (13), rocker arms (11), spacers (14 and
15) and mounting blocks (10) onto rocker arm shaft (16).
Make sure that mounting blocks and spacers are correctly
installed (fig. 12-5) and that oil holes in rocker arm
shaft are correctly positioned (fig. 12-6).
(c) Install retaining rings (9, figure 12-4).
12-16
