Volvo 2001 User Manual

THECYLINDER
HEAD
1 . Remove the
"collets" and valve
springs using
a valve
bow . Remove the valves . Remove
t
he valve stem seals .
Place the
valves
in the
proper sequence in a valve
stand .
Valve
guides
2 . Check the valve guide wear by inserting anew valve stem
into the guide . Measure the play
using
a dial indicator
.
If
necessary, replace the valve guides .
Wear limits :
Inlet
valve, max play . . . . . . . . . . . . . . . 0 .15
mm (0 .0059
in)
Exhaust valve, max play . . . . . . . . . . . . 0 .15 mm (0 .0059 in)
3 . Use
mandrel p/n 5218 to press out the valve guides
.
Oil
the new valve guides externally and use mandrel p/n
884559 to
install
them
.
Press down the mandrel all the way
down to the cylinder head . Ream the valve guides if
necessary
.
Valve
seats and valves
4 . Mill or ream the valve seats . The angle
(C)
should be 45°
(for
2003T, 30° for the inlet valve) . The
sealing
surface's
width
(B) should be 1 ±0 .1 mm (0 .039±0 .0039 in) . Grind the valves
in
a valve
grinding machine
.
The angle (D),
see
Tech . data . If
the
disc thickness after grinding is less
than 1
.0
mm (0 .039 in)
for naturally aspirated engines or 0 .8 mm
(0.031
in) for
turbocharged engines, the valves must bescrapped . Valves
with
bent stems, or if the measurement (A) exceeds 2 .5 mm (0 .098
in)
must also be scrapped . Grind the
valve tip
towards the
rockers if necessary . Lap in the valves using valve grinding
paste and check the contact area
with
marking dye .

Volvo 2001 Specifications

General

Brand	Volvo
Model	2001
Category	Engine
Language	English