Saab 95 1967, Service Manual

Page: 84 / 610

CHAN KSHAFT
The cast-iron crankshaft has hardened and ground bea-
ring journals. It runs in three main bearings, the middle
one of which also serves as an axial guide bearing.Oi|-
ways for lubricating oil are drilled in the shaft. All main
bearing inserts are interchangeable.
CAMSHAFT AND TAPP ETS
The camshaft is a cast unit with hardened and phosphat-
ed cams. It is driven by the crankshaft via a gear with a
ratio of 2:1. The camshaft gear is made of fiber to ensure
quiet running. Guidance in the axial direction is provided
by a thrust plate located in the front end of the shaft.
The axial clearance is determined by a spacer located be-
hind the said thrust plate. The tappets are actuated di-
mshaft They are carried in the cylinder
amit the movement to the valves via push
s The tappets are accessible upon remov.
rectly by the c
block and trans
rods and rocker
al of the cylinder heads.
CONNECTING RODS. PISTONS AND PISTON RINGS
The pistons are journalled on the piston pins, and the
pm‘5 akr e Thanks to the tight fit of the connectmg rods
2:325:25 pins, no special circlips are-required for the
piston pins. Both pistons and connecting rods complete
and separate pistons and connectlng rods are carried as
:P:e:::;t:s are made of aluminium. They have.grooves
for two compression rings and one Oil control ring. The
upper compression ring is chromeplated and plain. The
lower compression ring has oil-scraping properties' The
oil control ring itself is tripartite.
ENGINE
RIGHTHAND VIEW
1. Automatic choke
2. Distributor
3. Water distribution pipe
4. Clutch
5. By-pass line
6. Flywheel
7. Oil filter
8. Oil drain plug
9. Hose connection, lo
10. Water pump
war radiator hose
11. Alternator
12. Oil filler cap
200—2