Volvo D24 - Clean Inside of Valve Guide; Machine Grind Intake Valves; Mill or Grind Valve Seats

Group 21 Engine
Cylinder head, cleaning
-
inspection
Clean inside of
valve
Use rsamBr 5224
Note! Cutting
oil
must
Valves and seats must
F8
guide
be used when reaming,
be
ground-in
aftsr valve
guide
'-'T-______________
wr-
G ri nd i n
g-
i n va lve6 a n d
seats
Operations
F
9-1
2
F9
Machine
g
nd intako valvos
Edge
of intake valve must not be lessthan 0.5 mm
(0.02
In).
lmportant! Exhaustvalves
are stellite coated and must
not be
ground
by machine. Grind-in valve on seatwith
grinding paste.
F10
Mill or
grind
valv6
seats
Grind
to 45'.
Contact surface
{a)
must be:
-2.0
mm
{0.08
in) for
intake valve
-2.4
mm
{0.09
in)for sxhaust valve.
ll contact
surface is too wide
reduc€ area with
a 15q
lmponam!
Outer diameter
of cutter
must no! Bxceeo
35,2 mm
(1.39
in) for intake valve
s€ats and
33.2 mm
{1.31
in)for
sxhaust valve
ssats.
Ftl
cylinder head
Measuae
gap
between disc
and
surfaco
Gap
=
max 1.5 mm
10.06
in).
Replace
seat and
possibly
valve if
gap
is
too Iarge.
Notel Two valvs types
are available, see G3.
1.5 mm
{0.00
in)
38