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8-50
let screen assembly, intermediate
shaft and the oil pump mounting
·gasket from the cylinder block.
30. Remove the camshaft from
the cylinder block. Use care to pre-
vent damage to the camshaft bear-
ings.
31. Remove the cylinder ridge
from the top of the cylinder bores
(Fig. 42) . Always insert a clean
cloth in the cylinder bore to catch
all metal chips and shavings. Re-
move the cloth and wipe the bore
clean before removing the piston.
32. Rotate the crankshaft until the
piston to be removed is at BDC.
Remove the connecting rod bearing
cap and bearing inserts. Push the
connecting rod and piston out of the
cylinder bore with a wooden ham-
mer handle. Use care to prevent
the connecting rod from striking
and damaging the cylinder bore.
Place the bearing caps and inserts
on the connecting rods so that the
numbered sides match. The assem-
blies are numbered so that they
can be installed in their respective
cylinders if inspection reveals a
satisfactory condithm.
Repeat the procedure for the re-
maining cylinders.
33. Turn the cylinder block so
that the bottom faces upward. Re-
move the main bearing caps and
lower inserts. Remove the crankshaft
and upper bearing inserts. Keep all
main bearing caps and inserts in
their order of removal, for inspec-
tion and installation purposes.
34.
Remove the rear oil seal and
side seals from the rear main bearing
cap and the cylinder block.
35. If it is necessary to replace the
camshaft bearings, refer to "Cam-
shaft Bearing Replacement" in this
section of the manual for the proper
procedure. This operation should
only be performed after inspec-
tion of the cylinder block has been
completed.
CYLINDER BLOCK PLUGS
AND FITTINGS
The location of various cylinder
block plugs and fittings used in the
cylinder block are shown in Fig. 68.
EXPANSION PLUG
REPLACEMENT
1. To replace a large expansion
plug, drill a lh -inch hole
~n
the
center of the plug. Remove the plug
with a clutch pilot bearing remover
(tool 7600-E) or pry it out with
a large drift punch. Clean and in-
GROUP 8-ENGINE
(170)
A1892-A
FIG.
68-Cylinder Block Plugs and FiHings
spect the cylinder block plug bore.
Coat the edges of the plug with
suitable sealing compound (oil or
water-resistant) and drive it into
the cylinder block until it is seated.
2. To replace a small expansion
plug, drill a
1
1'4 -inch hole in the
center of the plug and pry it out
with a small pin punch. Clean and
inspect the cylinder block plug bore.
Coat the edges of the plug with
suitable sealing compound (oil or
water-resistant) and drive it into
the cylinder block until it is seated.
ENGINE ASSEMBLY
1. Turn the cylinder block on the
repair stand so that the bottom faces
upward. Coat the cylinder block
drain plugs
with
water- resistant
sealer and install them in the cylin-
der block.
2. Install new camshaft bearings
if the original bearings were re-
moved because of wear or damage
(Fig. 66). To install camshaft bear-
ings, refer to "Camshaft Bearing
Replacement" in this section of the
manual.
3. Install a new rear crankshaft
main bearing oil seal in the cylinder
block (Figs. 62 and 63).
4.
Place the upper main bearing
inserts into position in the cylinder
block bore, with the tang of the bear-
ings in the slot provided. Lubricate
the bearings lightly with engine oil.
If the crankshaft main journals
have been reground to a definite
undersize install the correct under-
size bearing inserts to fit the
journals.
5. Carefully install the crankshaft.
Install the lower main bearing in-
serts, and main bearing caps. Make
certain that they are installed in
their original position. Torque the
mounting holts to specifications.
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Troubleshooting
