Volvo D24 - G. Cylinder head, assembly

Group 21 Engine
Cylinder head, assembly
F16
Heat cylinder head
Heat
to
'100'C
(212'F).
F17
Place new
seat in installation
tool
Use drift 5220 for intake
valve seats and 5221 for
ex-
F18
Cool valve seat
Wear
protective gloves
and safety
glasses.
Use liquid carbon dioxide to cool
seat
down
to
-70'C
(-94"F).
Ft9
Tap-in
valve
seat
NotelThismustbedonequickly,within3
4secondsto
avoid temperature loss.
F20
Check lit
of valve seat
Make sure that the
seat
has
bottomed correctly and is
secure. if not,
replace cylinder head.
Grind valves
and mill seats
See instructions
on
page
38, operations F F]2
lr
0,r
(
40
F21