Fit the bearing cap and tighten
down
suf5ciently to nip the mandrel.
Tighten
the
eight bolts to secure the
oil seal to the cylinder block and
bear-
ingcap (torqueloadingof
8-10
lbs.
ft).
Remove bearing cap fiom block.
(ii)
Fit the upper half of the
main
bearings
to the cylinder block; thoroughly clean
and lubricate
;
place the crankshaft
in
position.
(iii)
Fit the lower halves of the
main
.
.
bearings to the bearing caps,
and
lubricate.
(iv)
Thread the two top halves of the thrust
washers at the side of the centre main
bearing between the crankshaft and the
cylinder block.
It is essential that the white metal
side is toward the crankshaft.
Fit the thrust washers, one either side,
to the centre bearing cap (Fig.
34)
and
lightly secure with the two bolts and
lock washers to cylinder block. Fit the
two remaining caps to the cylinder
block
with
two bolts and two lock
washers each.
(v)
Commencing from the front of the
engine, tighten the bearings cap bolts
to the correct torque (see "General
Data").
On
tightening the rear bearing
RECESSED FOR
BEARING
HOUSING
-,-
DIAMETER
OF
Fig.
33
Crankshaft
Mandrel for centring the
Rear
Oil
SePL
be
tightened down so that the oil seal
division is flush.
(vi)
Check
the crankshaft end float by the
use of the feeler gauges or by using the
dial indicator gauge as shown
in
Fig.
17.
Should the end float determined
be greater than
.006",
thicker thrust
washers may be fitted; when the float
is less than
.004,
thinner washers are
needed or the existing ones should be
rubbed down on emery paper (Fig. 18).
(vii) Fit the front
main
bearing sealing
block and tighten down the two cheese-
headed bolts using a substantial screw-
driver. Check that the face of the block
is flush with the face of the cylinder
block.
Plug the two cavities, one either end of
the sealing block, with the sealing pad
coated
with
shellac.
Fig.
32
Rear
Oil
Seal for Crankshaft. These are
a
mated pair and should not be separated.
cap, tap the oil seal lightly so that the
ioint between the two halves is flush.
In the absence of a crankshaft mandrel
he
oil
seal
bolts still be
Fig.
M
Fitting
the Lower Thrust Washer to the
Centre Bearing Cap.
loose at this iuncture. Thev should
now be tightened to
a
torque 16ading of
(viii) After dippin
the felt packing strip
8-10
lbs-
fti
The hearing cap must
into shellac &re it into the recesses
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