PRODUCE CROSS HATCH
SCRATCHES FOR FAST
RING SEATING
AVOID THIS
ANISH
C1091s
FIGURE 9-32. CROSSHATCHING
lA CAUTION! Abrasives
not
removed from the en-
gine
will
rapidly
wear the rings,
cylinder
walls,
and
bearing surfaces
of
all
lubricated parts.
For
this reason,
do
not
use
gasoline
or
commercial
solvents to clean the
cylinder
bores
after
deglazlng
or
honing. These solvents
cannot
re-
move
abrasives from the
cylinder
walls.
4. Clean the cylinder bore thoroughly with soap,
water, and clean rags, until a clean white rag
shows no discoloring when wiped through the
cylinder bore.
BEARINGS
To remove the camshaft or crankshaft bearings,
the engine must be completely disassembled.
Drive out the bearings by using a combination main
and cam bearing removal tool, and a press. Sup-
port the casting to avoid distorting
or
damaging the
bearing bores.
Camshaft
Bearing Replacement
Procedure
Precision replacement camshaft bearings do not
require line reaming
or
line boring after installation.
1 . Coat the bearing with lubricating oil.
9-21
2. Position the front bearing so that the oil hole in
the bearing is aligned with the oil hole (see Fig-
ure 9-33} in the block.
AUGN
@
HOLE
If!.___
__
BEARING
WITH HOLE
IN BEARING
BORE
7/32"
(5.55
mm)
,____FROM
OUTSIDE
M1474s
FIGURE 9-33. CAMSHAFT BEARING
3.
Position the rear bearing so that the elongated
slot is aligned with the breaker point plunger
hole
in
the top of the block.
4.
Use the combination main and cam bearing
driver with a press to install the front and rear
cam bearings. Push in the bearings to the
depth allowed by the flange on the driver.
Crankshaft
Bearings
Precision replacement crankshaft main bearings
do not require line reaming or line boring after in-
stallation. They are available in standard size,
0.002,
0.01
0,
0.020
or
0.030 inch undersize.
When installing either the front or rear main bear-
ing, always align the oil hole(s) in the bearing with
the oil hole{s) in the bearing bore. The oil passage
must be at least half open.
Rear Bearing: Use the combination main and cam
bearing driver and a press to install the rear main
bearing. Push the bearing into the bearing plate
from the inner side (see Figure 9-34) to the depth
allowed by the flange on the driver.
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