Adjustment Of Valves; Installation Of Valves; Valve Numbering; Valve Adjustment - Saab V4 Service Manual

2
ENGINE
ENGINE BODY
Valve mechanism
Valve honing
Apply a thin coat of grinding paste to the valve seat and
insert the valve in the cylinder head. Make a few honing
passes with the tool, carefully clean all grinding paste
out of the seat and check the surface with marking dye.
If
necessary, repeat this procedure and also do further
milling if this should prove to be required.
Installation of valves
lubricate the volve stems and guides, and insert the valve
with ,oil seal, valve spring and spring washer. Press the
spring wcsher and spring down with the valve spring
pliers and insert the two retainers.
ADJUSTMENT Of VALVES
Set the mark on the pulley immediately opposite the
dead center mark on the transmission cover.
If
the
crankshaft is turned slightly back and forth in this posi-
tion, the rocker arms at the first :,or) fourth cylinder
will move in opposite directions (will rC>C'k).
Driving
Ja
direction,..
214-4
VALVE NUMBERING
In this position, adjust the valves with a feeler gouge in
accordance with the directions given below. Then turn
the crankshaft one revolution and adjust the remaining
valves.
If the rocker arms rock at cylinder 4, valves I, 2, 4 and 6
must be adjusted.
If the rocker arms rock at cylinder I, valves 3, 5, 7 and 8
must be adjusted.
VALVE ADJUSTMENT
To ensure a smooth running and the lowest sound level
of the engine it is essential that the valve play is accura-
tely adjusted. The adjustment to be made with the en-
gine cold.
Recommended valve play:
intake valves
0.014
in.
(0,35
mm)
exhaust valves
0.016
in.
(0,40
mm)
Instructions
Checking and adjustment may, however, be made at once
after removal of air cleancer and valve cover, even if the
engine is still worm. Th..: valve play has, in fact, already
after
10
minutes reached a value corresponding to that
of a cold engine.
Jan. 1972